Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-12T17:41:07Z No. of bitstreams: 1 2016 - Alan Franco Barbosa.pdf: 6969234 bytes, checksum: 6f0ea0da3698193a91ae661b3c8aee8e (MD5) / Made available in DSpace on 2017-09-12T17:41:07Z (GMT). No. of bitstreams: 1 2016 - Alan Franco Barbosa.pdf: 6969234 bytes, checksum: 6f0ea0da3698193a91ae661b3c8aee8e (MD5) Previous issue date: 2016-12-15 / CAPES / CNPq / FAPERJ / The chemical and biological properties of Jambu, as well as the evaluation of the stability of spilanthol and the procedures of isolation this amide by solvents extraction are described. Were determined the amino acid profile, fatty acids, minerals, and free polyphenols, and total antioxidant activity (DPPH and ABTS) by the processes of drying with cold air and lyophilization. Adsorption isotherms were constructed using the set of experimental data of eight mathematical models. Lyophilized capitula, leaves and stems of Jambu were extracted with methanol at 100 ?C, and 10 MPa, and analyzed by LC-MS and NMR spectroscopy. The effect of methanol extract, and of fractions obtained by partitions with hexane and dichloromethane of methanol extracts, of the Jambu on the tyrosinase enzyme such as the antimicrobial activity front against of Micrococcus luteus and Lactobacillus casei were evaluated. The activation index of NKCC2 phosphorylation was evaluated by Western blotting. The rate of aquaporin 2 apical expression was analysed by confocal laser microscopy. Jambu dryed by cold air showed higher content of nutrient, except for the mineral content, and antioxidant capacity compared to lyophilized Jambu. At all evaluated temperatures, the model of Peleg presented the best adsorption isotherms of Jambu dryed by cold air. Spilanthol concentrations in capitula, leaves and stems were 16.5, 0.344 and 0.241 mg/g dry weight. The methanol extract from Jambu and the hexane fraction (84.28 % of spilanthol) were able to activate oxidant activity of the tyrosinase enzyme. On the other hand, the dichloromethane fraction (about 100 % spilanthol) showed strong inhibitory effect of tyrosinase enzyme in the first 10 min. There was no antimicrobial activity of methanol extract and hexane fraction about L. casei. But the hexane fraction created inhibition zone on M. luteus. Induced inhibition of cAMP by spilanthol modulates negatively the urine-concentrating mechanisms. It is concluded that Jambu subjected to the drying process with cold air offers better chemical quality and antioxidant capacity. The major component, espilantol, present mainly in inflorescences, does not change with extreme storage conditions. The methanolic extract of Jambu strongly activates the enzyme tyrosinase, whereas the dichloromethane fraction inhibits the tyrosinase. The hexanic fraction inhibits Micrococcus luteus growth and espilantol inhibits the production of cAMP, contributing to its application in drugs with diuretic function. / Esta tese teve por objetivo avaliar as propriedades qu?micas e biol?gicas do Jambu, bem como avaliar a estabilidade do espilantol e isolar esta amida por extra??o com solventes. Foram determinados o perfil de amino?cidos, ?cidos graxos, minerais, polifen?is totais e livres e a capacidade antioxidante (DPPH e ABTS) do Jambu pelos processos secagem com ar frio e liofiliza??o. As isotermas de adsor??o foram constru?das usando o conjunto de dados experimentais de 8 modelos matem?ticos. Cap?tulos, folhas e hastes liofilizados de Jambu foram extra?dos com metanol a 100 ?C e press?o de 10 MPa e analisados por CL-EM e RMN. Avaliaram-se os efeitos do extrato metan?lico e de fra??es obtidas com hexano e diclorometano do Jambu sobre a enzima tirosinase e atividade antimicrobiana frente ao Micrococcus luteus e o Lactobacillus casei. A fosforila??o de NKCC2 foi avaliada como ?ndice da sua ativa??o atrav?s de Western blotting. A taxa de express?o apical aquaporina 2 foi analisada por microscopia confocal a laser. O Jambu seco com ar frio apresentou maior teor dos nutrientes avaliados, com exce??o do teor de minerais, e maior capacidade antioxidante em rela??o ao Jambu liofilizado. O modelo de Peleg, em todas as temperaturas avaliadas, apresentou melhores isotermas de adsor??o de umidade do Jambu seco com ar frio. As concentra??es de espilantol nos cap?tulos, folhas e hastes foram de 16,5, 0,344 e 0,241 mg/g do peso seco. O extrato metan?lico de Jambu, bem como a fra??o hex?nica (84,28 % de espilantol) foram capazes de ativar a enzima tirosinase, por outro lado, a fra??o obtida com diclorometano (cerca de 100 % espilantol) mostrou forte efeito de inibi??o da enzima tirosinase nos primeiros 10 min. N?o foi observada a??o antimicrobiana do extrato metan?lico e fra??o hex?nica sobre L. casei, por?m, a fra??o hex?nica criou halo de inibi??o sobre M. luteus. O espilantol inibiu a produ??o de cAMP, modulando negativamente os mecanismos de concentra??o de urina. Conclui-se que o Jambu submetido ao processo de secagem com ar frio ofereceu melhor qualidade qu?mica e capacidade antioxidante. O componente majorit?rio, espilantol, presente sobretudo nas infloresc?ncias, n?o se altera com condi??es extremas de armazenamento. O extrato metan?lico de Jambu ativa fortemente a enzima tirosinase, enquanto que a fra??o diclorometano inibe a tirosinase. J? a fra??o hex?nica inibe o crescimento Micrococcus luteus e o espilantol inibe a produ??o de cAMP, contribuindo para sua aplica??o em f?rmacos com fun??o diur?tica.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-06-02T18:56:26Z No. of bitstreams: 1 2012 - Emanoel do Espirito Santo Mendes de Melo.pdf: 855000 bytes, checksum: 426f96c993c2b69febc20ecfd51c0ac9 (MD5) / Made available in DSpace on 2017-06-02T18:56:26Z (GMT). No. of bitstreams: 1 2012 - Emanoel do Espirito Santo Mendes de Melo.pdf: 855000 bytes, checksum: 426f96c993c2b69febc20ecfd51c0ac9 (MD5) Previous issue date: 2012-07-17 / CAPES / The ju?areira (Euterpe edulis Martius) is a plant of the family Arecaceae (palmae), which develops next to streams, rivers, wetlands and forested areas of land, and less often in more remote and local land pantanosos. Ocorrem predominantly in the North and Northeast of Brazil, mainly in the states of Par?, Amap?, Maranh?o and Tocantins. The pulp ju?ara, typical food of the region, if not consumed soon after obtaining it are packed in polyethylene bags and frozen. This project aimed to characterize and evaluate the mineral and organic content of the pulp ju?ara subjected to slow freezing and fast. Justified this research, to provide important information on the nutritional quality and functional that pulp, to contribute to improving the quality of life of Maranh?o, giving them a better quality of life, and to encourage the food industry. In this experiment we used ju?ara of ripe fruit (Euterpe edulis Martius) collected manually palm trees Ju?ara Park, located at Maracan? (within the island of S?o Lu?s-MA), in February 2012. The analyzes chemical, physical and physico-chemical pulp ju?ara revealed high in fiber, especially insoluble large percentage of lipids, anthocyanin, carbohydrates and low in protein. The minerals already analyzed the samples, the content of potassium, calcium, iron, zinc, copper, manganese and meet most of the recommended daily to man.The fatty acid composition showed a large amount of unsaturated fatty acids, predominantly oleic acid and palmitic acid. The number of microorganisms in the analyzed samples, lying within the standards required by applicable law in Brazil and the raw materials do not present significant hazards to the consumer, except in the case of molds and yeasts that are above the allowed amount. / A ju?areira (Euterpe edulis Martius) ? uma planta da fam?lia das Arecaceae (palmae), que desenvolve-se pr?ximo aos ribeir?es, rios, v?rzeas e nas matas de terra firme, e com menos frequ?ncia, em terrenos mais afastados e locais pantanosos.Ocorrem predominantemente nas regi?es Norte e Nordeste do Brasil, principalmente nos estados do Par?, Amap?, Maranh?o e Tocantins. A polpa de ju?ara, alimento t?pico da regi?o, quando n?o ? consumida logo ap?s a sua obten??o s?o acondicionadas em sacos de polietileno e congeladas. Este projeto teve como objetivos, caracterizar e avaliar o conte?do org?nico e mineral da polpa de ju?ara submetida aos congelamentos lento e r?pido. Justifica-se essa pesquisa, a fim de proporcionar informa??es importantes sobre a qualidade nutricional e funcional dessa polpa, para contribuir com a melhoria da qualidade de vida dos maranhenses, proporcionando-lhes uma melhor qualidade de vida, bem como incentivar o setor de alimentos. No presente experimento foram utilizados frutos maduros de ju?ara (Euterpe edulis Martius) coletados manualmente das palmeiras do Parque da Ju?ara, situado no Maracan? (no interior da ilha de S?o Lu?s-MA), em fevereiro de 2012. As an?lises qu?mica, f?sica e f?sico-qu?micas da polpa de ju?ara revelaram alto teor de fibras, em especial as insol?veis, grande percentual de lip?deos, antocianina, carboidratos e baixo teor de prote?na. J? os minerais analisados nas amostras, o teor de pot?ssio,c?lcio,ferro, zinco, cobre, e mangan?s atendem grande parte das necessidades di?rias recomendadas para o homem. A composi??o em ?cidos graxos revelou grande quantidade de ?cidos graxos insaturados, com predom?nio do ?cido ol?ico e palm?tico. A quantidade de microorganismos, nas amostras analisadas, encontra-se dentro dos padr?es exigidos pela legisla??o aplic?vel no Brasil e as mat?rias-prima n?o apresentam perigos significativos para

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-02-09T19:35:26Z No. of bitstreams: 1 2016 - Camila Gomes Nunes.pdf: 4871207 bytes, checksum: 62e59136c5dda645d85ce86beadae3ca (MD5) / Made available in DSpace on 2017-02-09T19:35:26Z (GMT). No. of bitstreams: 1 2016 - Camila Gomes Nunes.pdf: 4871207 bytes, checksum: 62e59136c5dda645d85ce86beadae3ca (MD5) Previous issue date: 2016-08-22 / Despite the nutritional and functional value the fruits of jamel?ozeiros (Syzygium Cumini L. Skeels) known as jamel?es are little consumed. In harvest seasons, production is abundant, however, there is no rational use of the fruit. The pulp of this fruit has a high content of anthocyanin, which gives it high antioxidant potential. The practice of physical exercise generates free radicals in the body, which has the antioxidant defense system; the effectiveness of this system is modulated by the intake of nutrients and other compounds with antioxidant potential, as presents in Jamel?o. The aim of the paper was develop energy drink, formulation for use with Jamel?o pulp and mix of carbohydrates, 100% natural, without colorings and flavorings. 11 formulations were produced according to the RDC / ANVISA n?18/2010, with variations in pulp content and mix of carbohydrates. The samples were subjected to sensory evaluation by the acceptance method with consumers and 4 samples with higher averages passed new sensory analysis by athletes, acceptance method and were also submitted to: physical analysis, chemical and physico-chemical, antioxidant activity by methods DPPH, anthocyanin content and content of phenolic compounds. The formulations 4,5,8 and 11 obtained the highest average with consumers and the sample 11 to greater acceptance by athletes. The sample 8 had higher anthocyanin content differing from the other. The sample 4 and 5 showed higher levels of phenolic and the sample 4 presented the highest antioxidant activity. In conclusion, the beverage had high and satisfactory levels of antioxidants and good acceptance by athletes. Therefore, the production of energy and functional drink for athletes and favors the development of new products using Jamel?o must be encouraged and exploited. / Apesar do valor nutricional e funcional, os frutos dos jamel?ozeiros (Syzygium Cumini L. Skeels) conhecidos como jamel?es, s?o pouco consumidos. Nas ?pocas de safra, a produ??o ? abundante, no entanto, n?o h? uso racional do fruto. A polpa desse fruto apresenta alto teor de antocianinas, que lhe confere alto potencial antioxidante. A pr?tica de exerc?cios f?sicos gera radicais livres no organismo que conta com o sistema de defesa antioxidante, a efic?cia desse sistema ? modulada pela ingest?o de nutrientes e outros compostos com potencial antioxidante, como os presentes no jamel?o. Desenvolver formula??o de bebida energ?tica pronta para consumo com polpa de jamel?o e mistura de carboidratos, 100% natural, sem corantes e aromatizantes. Foram produzidas 11 diferentes formula??es conforme a RDC/ANVISA n?18/2010, com varia??es no teor de polpa e do mix de carboidratos. As amostras foram submetidas a an?lise sensorial pelo m?todo de aceita??o com consumidores e as 4 amostras com maiores m?dias passaram por nova an?lise sensorial pelo m?todo de aceita??o com atletas e foram submetidas tamb?m a: An?lise f?sica, qu?mica e f?sico-qu?mica, atividade antioxidante pelos m?todos DPPH, teor de antocianinas e teor de compostos fen?licos totais. As formula??es 4,5,8 e 11 obtiveram as maiores m?dias com os consumidores sendo a amostra 11 a de maior aceita??o pelos atletas. A amostra 8 apresentou maior teor de antocianina diferindo das demais. As amostra 4 e 5 apresentaram maiores teores de compostos fen?licos sendo a amostra 4 a que apresentou maior atividade antioxidante. Em conclus?o, a bebida desenvolvida apresentou teores elevados e satisfat?rios de compostos antioxidantes e boa aceita??o entre os atletas. Logo, a produ??o de uma bebida energ?tica e funcional para atletas ? favor?vel e o desenvolvimento de novos produtos envolvendo o jamel?o como mat?ria-prima devem ser incentivados e explorados.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-04-05T19:32:12Z No. of bitstreams: 1 2012 - Gabriela Viana da Silva.pdf: 1385561 bytes, checksum: ebedf6cb2382daee2a3bf246edc9848f (MD5) / Made available in DSpace on 2017-04-05T19:32:12Z (GMT). No. of bitstreams: 1 2012 - Gabriela Viana da Silva.pdf: 1385561 bytes, checksum: ebedf6cb2382daee2a3bf246edc9848f (MD5) Previous issue date: 2012-03-27 / CAPES / The sheep milk production in Brazil is a relatively new activity, whose production is directed towards the manufacture of cheeses, yogurts and other products. Therewith a deficit of scientific papers related to this activity. Considered an excellent substrate, many pathogens can be transmitted to humans through consumption of milk and its derivatives, including Staphylococcus spp., one of the main agents involved in outbreaks of food poisoning. Moreover, the increasing of antimicrobial resistance is becoming a global public health problem. Within this problematic, this study aimed to identify the species of Staphylococcus and its antimicrobial susceptibility profile of current use in human and veterinary medicine, isolated from milk of sheep origin from rural properties in the Meridional Agreste of Pernambuco. We identified 13 different species, three coagulase-positive and 10 coagulase-negative and two strains identified only as SCN, especially Staphylococcus aureus (29) followed by S. chromogenes (15) and S. intermedius (9) by its frequency. The determination of antimicrobial susceptibility by disk diffusion revealed high rates of resistance to penicillin (53.2%) and ampicillin (45.6%). The susceptibility to oxacillin was evaluated by the disk diffusion methods for oxacillin and cefoxitin, Screen Agar and determination of Minimum Inhibitory Concentration through tests of broth microdilution and agar, the latter two detected resistance in 24% and 6% of isolates, respectively. All isolates were negative for the presence of blaZ and mecA genes and was not observed a correlation between phenotypic and genotypic testing for resistance to beta-lactams. The results show that this species is a source of infection, through its products, Staphylococcus potentially pathogenic to humans. / A produ??o de leite ovino no Brasil ? uma atividade relativamente nova, cuja produ??o est? direcionada para a confec??o de queijos, iogurtes e outros derivados. Com isso h? uma defict de trabalhos cient?ficos ligados a esta atividade. Considerado um excelente substrato, muitos micro-organismos patog?nicos podem ser veiculados ao homem atrav?s do consumo de leite e seus derivados, entre eles Staphylococcus spp., um dos principais agentes envolvidos em surtos de intoxica??es alimentares. Al?m disso, o crescente aumento da resist?ncia aos antimicrobianos vem se constituindo um problema de sa?de p?blica global. Dentro desta problem?tica, o presente estudo objetivou identificar as esp?cies de Staphylococcus e seu perfil de suscetibilidade aos antimicrobianos de uso corrente em medicina humana e veterin?ria, isoladas de leite de origem ovina provenientes de propriedades rurais no Agreste Meridional de Pernambuco. Foram identificadas 13 esp?cies diferentes, sendo tr?s do grupo Staphylococcus coagulase-positivo e 10 de Staphylococcus coagulase-negativo e duas cepas identificadas apenas como SCN, destacando-se por sua frequ?ncia Staphylococcus aureus (29) seguida pelo S. chromogenes (15) e S. intermedius (9). A determina??o da suscetibilidade aos antimicrobianos pelo teste disco difus?o revelou elevados percentuais de resist?ncia ? penicilina (53,2%) e ampicilina (45,6%). A suscetibilidade a oxacilina foi avaliada atrav?s dos m?todos de disco-difus?o para oxacilina e cefoxitina, Screen Agar e determina??o da Concentra??o Inibit?ria M?nima atrav?s dos testes de Microdilui??o em Caldo e em Agar, tendo estes dois ?ltimos detectado resist?ncia em 24% e 6% dos isolados, respectivamente. Todos os isolados foram negativos para a presen?a dos genes blaZ e mecA, n?o tendo sido observada uma correla??o entre os testes fenot?picos e genot?picos para a resist?ncia aos beta-lact?micos. Os resultados obtidos evidenciam que esta esp?cie animal ? mais uma fonte de infec??o e veiculadora, atrav?s de seus produtos, de Staphylococcus potencialmente patog?nicos para o homem.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-05T20:11:17Z No. of bitstreams: 1 2016 - Fernanda Marques Peixoto.pdf: 14003225 bytes, checksum: 89c95a9ad22b1e74cdf2bda273665230 (MD5) / Made available in DSpace on 2017-09-05T20:11:17Z (GMT). No. of bitstreams: 1 2016 - Fernanda Marques Peixoto.pdf: 14003225 bytes, checksum: 89c95a9ad22b1e74cdf2bda273665230 (MD5) Previous issue date: 2016-12-08 / A lot of interest in the consumption of anthocyanins increased after the association of their intake and reduced risk of chronic diseases. Despite of in vitro evidences of anthocyanins benefits to health, there is still a gap in the knowledge of the mechanisms of absorption of anthocyanins by the human body. It is known that concentration of food anthocyanins doesn't reflect the amount of these compounds which are absorbed, metabolized, distributed and biologically active in humans. Some in vitro models have been developed to evaluate the steps of cell release and transport ( uptake) of these compounds from food. The objective of this study was to evaluate the in vitro absorption of food anthocyanins using the in vitro digestion followed by uptake and transport in Caco-2 human intestinal cell line and MKN-28 human gastric cell line. Initially, anthocyanins bioaccessibility of diverse fruits was evaluated in order to select the better sources for transport assays. The bioaccessibility assays were performed using an in vitro digestion model, which mimics the human oral, gastric and intestinal stages. Quantification and characterization of anthocyanins profile were performed by high-performance liquid chromatography (HPLC) with Thermo Scientific? C1s 2.4 (4.6 x 10mm) column. After selection of the most promising fruits, the bioaccessibility tests were followed by transport assays. To assess gastric absorption, the product from gastric digestion was applied on the MKN-28 cell monolayer, which was obtained after 7 days of culture of 2.5 x 10^5 MKN-28 cells seeded in RPMI culture media in transwell? plates. The permeate was collected after 30, 60, 120 andl80 minutes oftransport. For evaluation of intestinal absorption after digestion, the digesta from the intestinal phase was applied on the Caco-2 cell monolayer, which was obtained after 21 days of culture of 2.5 x 105 Caco-2 cells seeded in DMEM culture media in TRANSWELL? plates. The permeate was collected after 30, 60 and 120 minutes of transport. All analyses were made by forming CLUE / photodiode array detector (Thermo? Scientific) at 520nm. Peel powder from jabuticaba, jambo and Jamel?o were the most promising sources. The bioaccessibility of anthocyanins after gastric digestion was 13% for jabuticaba, 45 % for jambo and 65 % for jamel?o. In addition, the intestinal bioaccessibility was 1 O % for jabuticaba, 15 % for jambo and 45 % for jamel?o. The transport assay with the MKN-28 gastric cell line, revealed 19.7%, 9.7 % and 14.1 % of transport efficiency, respectively, for jambo, jabuticaba and jamel?o digestion products. While Caco-2 intestinal cell model showed 0.8 %, 0.2 % and 0.3 % oftransport efficiency, respectively, for jambo, jabuticaba and jamel?o. These results suggest food anthocyanins are preferentially absorbed by the human gastric mucosa and to a lesser extent by the human intestinal epithelium. / O interesse pelo consumo das antocianinas aumentou ap?s o surgimento da rela??o entre o seu consumo e a redu??o do risco de doen?as cr?nicas. Apesar das evid?ncias in vitro quanto a esses beneficios ? sa?de, ainda h? uma lacuna que permanece sob investiga??o: o mecanismo de absor??o das antocianinas pelo organismo humano. Sabe-se que a quantidade desses compostos, nos alimentos, n?o reflete a quantidade absorvida, metabolizada, distribu?da e biologicamente ativa em humanos. Alguns modelos in vitro t?m sido desenvolvidos para avaliar as etapas de digest?o e transporte celular (absor??o) de compostos dos alimentos. Assim, o objetivo deste trabalho foi avaliar o transporte in vitro de antocianinas em alimentos utilizando modelos de digest?o in vitro seguido do transporte em c?lulas intestinais Caco-2 e c?lulas g?stricas MKN-28. Na 1? etapa, oito frutos foram analisados quanto aos valores de bioacessibilidade (BCSS) fornecidos pelas antocianinas presentes, para posterior sele??o para os ensaios de transporte. Os ensaios de BCSS foram realizados com um modelo de digest?o in vitro, para simula??o das fases oral, g?strica e intestinal humana. A quantifica??o e determina??o do perfil de antocianinas foram realizadas por Cromatografia l?quida de alta efici?ncia (CLAE), com coluna Thermo? Scientific C1s 2,4 (4,6 x 100mm). Na 2? etapa, realizou-se os ensaios de BCSS, anteriormente aos ensaios de transporte, nos frutos potencialmente mais promissores. Para a avalia??o do transporte g?strico, na sequ?ncia, o digerido g?strico foi aplicado sobre a monocamada de c?lulas MKN-28, com 2,5 x 10^5 c?lulas, em meio RPMI, em placa transwell? e, ap?s 7 dias de cultivo, o permeado foi coletado nos tempos 30, 60, 120, 180 minutos. Para o transporte intestinal, sequencial, o digerido intestinal foi aplicado sobre a monocamada celular Caco-2, com 2,5 x 105 c?lulas, em meio DMEM, em placas transwell? e, ap?s 21 dias de cultivo, o permeado foi coletado nos tempos 30, 60 e 120 minutos de transporte. Todas as an?lises foram realizadas por CLUE/detector de arranjo fotodiodo (Thermo? Scientific), a 520 nm. Os p?s da casca da jabuticaba, jambo e jamel?o foram as matrizes mais promissoras. A BCSS das antocianinas, ap?s a digest?o g?strica, foi de 13 % parajabuticaba, 45 % parajambo e 65 % parajamel?o, enquanto a BCSS intestinal foi de 10% para jabuticaba, 15 % para jambo e 45 % para jamel?o. Os ensaios de transporte (ET) com os modelos de c?lula MKN-28 resultaram em 19,7; 9,7 e 14,1 % de ET, respectivamente, para os p?s do jambo, jabuticaba, e jamel?o, enquanto que o modelo Caco-2, resultaram em 0,8, 0,2 e 0,3 % de ET, respectivamente. Estes resultados sugerem que as antocianinas s?o preferencialmente absorvidas pela mucosa g?strica.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-28T18:08:52Z No. of bitstreams: 1 2017 - V?ctor de Carvalho Martins.pdf: 5700751 bytes, checksum: 07961d0468442fc22ade82dc8b861206 (MD5) / Made available in DSpace on 2017-09-28T18:08:52Z (GMT). No. of bitstreams: 1 2017 - V?ctor de Carvalho Martins.pdf: 5700751 bytes, checksum: 07961d0468442fc22ade82dc8b861206 (MD5) Previous issue date: 2017-02-14 / CAPES / Coffee is one of the most appreciated beverages in the world, due to its sensorial and functional characteristics. Currently, as the main producer and exporter in the world, it is estimated that in Brazil there will be growth in the domestic market in the coming years, in which roasted and ground coffee predominates. This type of product is impaired mainly by adulteration with other plant materials. The implementation of more sensitive and selective methods is necessary to ensure higher quality products. The objective of this dissertation was to develop a method to detect adulterants (rice, barley, corn and soybeans) in commercial samples of coffee, through the oligosaccharides profile and the techniques of Ultra Performance Liquid Chromatography coupled to Tandem Mass Spectrometry (UPLC-MS-MS). From standard solutions of five possible chemical markers (maltose, raffinose, stachyose, 1-kestose and nystose) in aqueous solution of 0.1% formic acid and acetonitrile (1:1) and in Milli-Q grade water, the operational parameters of the mass spectrometer and the chromatographic conditions were tested. The adopted chromatographic method consisted of chromatography by hydrophilic interaction and gradient elution of acetonitrile and aqueous solution of formic acid 0.1%, with injector temperature 20?C; injection volume 1.0 ?L; flow rate 0.5 mL/min; column temperature 35?C; and run time 10 min. For the spectrometric method, electrospray ionization was used in positive mode, with capillary, sampling and extraction cones voltages of, respectively, 3.0 kV, 50 V, 2.0 V; sample temperature 80?C; cone gas flow 40 L/h; temperature and flow of desolvation gas 300?C and 500 L/h; and collision energies of at least 15.0 V. The results indicated a good repeatability among analysis of standard solution, with selectivity by the real-time monitoring of the sequential mass spectra. Extracts from the previously roasted samples of adulterants were analyzed. It was confirmed the effect of temperature as an interfering factor for the detection of oligosaccharides. Only soybean presented as potential chemical markers raffinose and stachyose. For the grains of rice, barley and corn, another precursor ion of the same mass/charge ratio (m/z) of raffinose and 1-kestose was observed. It has been identified as maltotriose, in which isomeric differentiation can be ensured by different fragmentation profiles. The study of the mass spectra still ratified these results by the observation of a greater susceptibility of the rupture of ?, ? (1?2) bonds and the formation of ions fragments with saturated cyclic chain. However, through the use of the methodology, the chemical markers were not detected in the commercial samples of coffee, even with the samples previously disapproved for the presence of barley. The optimization of the extraction method or the inclusion of sodiated solvents may be necessary and, therefore, new experiments should still be performed, ensuring the applicability of the method by UPLC-MS-MS. / O caf? consiste em uma das bebidas mais apreciadas em todo o mundo, devido a suas caracter?sticas sensoriais e funcionais. Atualmente como principal produtor e exportador no mundo, estima-se que no Brasil haja crescimento no mercado interno para os pr?ximos anos, em que se predomina o caf? torrado e mo?do. Este tipo de produto ? prejudicado principalmente pela pr?tica de adultera??o com outras mat?rias-primas vegetais. A implementa??o de m?todos de maior sensibilidade e seletividade ? necess?ria para a garantia de produtos de maior qualidade. O objetivo desta disserta??o foi desenvolver um m?todo de detec??o de adulterantes (arroz, cevada, milho e soja) em amostras comerciais de caf?, atrav?s do perfil de oligossacar?deos e das t?cnicas de Cromatografia L?quida de Ultra Efici?ncia acoplada a Espectrometria de Massas Sequencial (CLUE-EM-EM). A partir de solu??es padr?o de cinco poss?veis marcadores qu?micos (maltose, rafinose, estaquiose, 1-kestose e nistose) em solvente solu??o aquosa de ?cido f?rmico a 0,1% e acetonitrila (1:1) e em ?gua grau Milli-Q, foram testados os par?metros operacionais do espectr?metro de massas e as condi??es cromatogr?ficas. O m?todo cromatogr?fico adotado consistiu no uso da cromatografia por intera??o hidrof?lica e elui??o em gradiente de acetonitrila e solu??o aquosa de ?cido f?rmico, com as condi??es de temperatura do injetor de 20?C; volume de inje??o de 1,0 ?L; fluxo de 0,5 mL/min; temperatura da coluna de 35?C; e tempo de corrida de 10 min. Para o m?todo espectrom?trico, empregou-se a ioniza??o por eletrospray em modo positivo, com voltagem no capilar, nos cones de amostragem e de extra??o de, respectivamente, 3,0 kV, 50 V, 2,0 V; temperatura da amostra de 80?C; fluxo do g?s do cone de 40 L/h; temperatura e fluxo do g?s de dessolvata??o de 300?C e 500 L/h; e energias de colis?o de, no m?nimo, 15,0 V. Os resultados indicaram uma boa repetitividade entre as an?lises das solu??es padr?o, com a seletividade sendo garantida pelo monitoramento em tempo real dos espectros de massas sequencial. Extratos das amostras previamente torradas dos adulterantes foram analisados, sendo confirmado o efeito da temperatura como um fator interferente para a detec??o dos oligossacar?deos. Apenas a soja apresentou como potenciais marcadores qu?micos rafinose e estaquiose. Para os gr?os de arroz, cevada e milho, foi observado outro ?on precursor de mesma rela??o massa/carga (m/z) da rafinose e da 1-kestose. Este foi identificado como a maltotriose, em que a diferencia??o isom?rica pode ser garantida pelos diferentes perfis de fragmenta??o. O estudo dos espectros de massas ainda ratificou estes resultados pela observa??o de uma maior facilidade da ruptura das liga??es ?,? (1?2) e de forma??o de ?ons fragmentos de cadeia c?clica saturada. Por?m, atrav?s do emprego da metodologia, n?o foram detectados os marcadores qu?micos nas amostras comerciais de caf? analisadas, mesmo com as amostras previamente reprovadas pela presen?a de cevada. A otimiza??o do m?todo de extra??o ou a inclus?o de solventes sodiados podem ser necess?rios e, por tal raz?o, novos experimentos ainda devem ser realizados, garantindo a aplicabilidade do m?todo por CLUE-EM-EM.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-02-09T16:33:02Z No. of bitstreams: 1 2017 - Bruno Vilarinho Victorino Pinto.pdf: 1581753 bytes, checksum: 66033106fefd5a72335775e4dc3f3644 (MD5) / Made available in DSpace on 2018-02-09T16:33:02Z (GMT). No. of bitstreams: 1 2017 - Bruno Vilarinho Victorino Pinto.pdf: 1581753 bytes, checksum: 66033106fefd5a72335775e4dc3f3644 (MD5) Previous issue date: 2017-02-08 / Fish consumption has been associated with healthy habits, mainly due to the high protein content and the presence of polyunsaturated fatty acids omega 3 and 6, as well as vitamins and minerals. Tilapia has been prominent in the national scenario as one of the main aquaculture species, being the most cultivated species. This growth has caused an increase in the demand for the industrialization of this fish, considering that the main product commercialized is filet. However, residues from tilapia processing correspond to 65%, generating large volumes. Part of these residues, such as the tilapia ridge (carcass with meat adhered after the filleting process), can be used to obtain mechanically separated meat (CMS) for the production of fish co-products with good nutritional quality. In this context the use of the tranglutaminase enzyme in the elaboration of fish derivatives, mainly fish shaped products, becomes interesting to provide good textural properties, increasing the acceptability of the products. The objective of this study was to develop a fishburger from the TMS of tilapia spines, added with transglutaminase aiming at adding value to the product and optimizing the use of the residues generated in tilapia processing. The raw material (CMS) was analyzed for the composition centesimal, chemical and microbiological physical characteristics. The nutritional quality of the product was evaluated through the fatty acid profile, besides the centesimal, chemical and microbiological evaluation. Both the product and the raw material presented satisfactory chemical and microbiological physical characteristics. For the evaluation of the best answers in the elaboration of the fishburgers, the response surface methodology was used, using as independent variables: water percentage (5, 9, 15, 21 and 25%), manioc starch (0, 2, 5, 8, 10%) and transglutaminase (0, 0.4, 1, 1.6 and 2%), and as dependent variables: moisture content, water retention capacity, percentage of shrinkage, cooking yield and texture (hardness, cohesiveness, elasticity, guminess and chewing). Satisfactory results were obtained for the highest concentrations of starch and transglutaminase and for the lowest percentages of water. Thus, two new formulations of fishburgers were prepared by fixing the water and starch to 0 and 10%, respectively, and varying the transglutaminase by 2.3 and 2.5%. These fishburgers were intended for centesimal and nutritional evaluation. Both the raw and the grilled product had good indices as to the centesimal composition, being the low lipid content and high protein content. The nutritional quality of the fishburgers showed a good profile in fatty acids, highlighting. The utilization of the spine to obtain CMS and its destination for the elaboration of co-products of fish for human consumption proved to be feasible, since the product obtained presented good nutritional quality, with low fat content. The application of the transglutaminase enzyme was efficient in improving textural properties. However, for the other variables, cassava starch proved to be more efficient. / O consumo de pescado tem sido associado a h?bitos saud?veis, principalmente pelo alto teor de prote?nas e pela presen?a de ?cidos graxos poli-insaturados ?mega 3 e 6, al?m de vitaminas e minerais. A til?pia vem se destacando no cen?rio nacional como uma das principais esp?cies da aquicultura, sendo a esp?cie mais cultivada. Este crescimento vem causando um aumento na demanda pela industrializa??o deste peixe, tendo em vista que o principal produto comercializado ? o fil?, por?m, res?duos do beneficiamento da til?pia correspondem a 65%. Parte destes res?duos, como ? o caso do espinha?o de til?pia (carca?a com a carne aderida ap?s o processo de filetagem), pode ser destinado a obten??o de carne mecanicamente separada (CMS) para elabora??o de coprodutos de pescado com boa qualidade nutricional. Neste contexto, o uso da enzima transglutaminase na elabora??o de derivados de pescado, principalmente produtos formatados de pescado, torna-se interessante por fornecer boas propriedades texturais, aumentando a aceitabilidade dos produtos. O objetivo deste estudo foi desenvolver um fishburger a partir da CMS de espinha?os de til?pia adicionado de transglutaminase, visando agrega??o de valor e otimiza??o do uso dos res?duos gerados no processamento da til?pia. A mat?ria prima (CMS) foi analisada quanto a composi??o centesimal, caracter?stica f?sico qu?mica e microbiol?gica. A qualidade nutricional do produto foi avaliada atrav?s do perfil em ?cidos graxos, al?m da avalia??o centesimal, f?sico qu?mica e microbiol?gica. Tanto o produto como a mat?ria prima apresentaram caracter?stica f?sico qu?mica e microbiol?gica satisfat?ria. Para avalia??o das melhores respostas na elabora??o dos fishburgers foi utilizado a metodologia de superf?cie de resposta, usando como vari?veis independentes: percentual de ?gua (5, 9, 15, 21 e 25%), f?cula de mandioca (0, 2, 5, 8, 10%) e transglutaminase (0; 0,4; 1; 1,6 e 2%), e como vari?veis dependentes: teor de umidade, capacidade de reten??o de ?gua, percentual de encolhimento, rendimento na coc??o e perfil de textura (dureza, coesividade, elasticidade, gomosidade e mastigabilidade). Resultados satisfat?rios foram obtidos para as maiores concentra??es de f?cula e transglutaminase e para os menores percentuais de ?gua. Deste modo, foram elaborados duas novas formula??es de fishburgers fixando-se a ?gua e f?cula em 0 e 10%, respectivamente, e variando a transglutaminase em 2,3 e 2,5%. Estes fishburgers foram destinados ? avalia??o centesimal e nutricional. Tanto o produto cr? como o grelhado obtiveram bons ?ndices quanto a composi??o centesimal, destacando-se o baixo conte?do lip?dico e elevado teor de prote?nas. O aproveitamento dos espinha?os para obten??o de CMS e sua destina??o para elabora??o de coprodutos de pescado para alimenta??o humana mostrou-se vi?vel, uma vez que o produto obtido apresentou boa qualidade nutricional, com baixo conte?do de gordura. A aplica??o da enzima transglutaminase foi eficiente na melhoria das propriedades texturais. Por?m, para as demais vari?veis respostas a f?cula de mandioca mostrou-se mais eficiente.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-06-29T18:35:24Z No. of bitstreams: 1 2016 - Elisabete Maria da Gra?a Costa do Nascimento.pdf: 1991326 bytes, checksum: cc5f12994a8bca0da10c49a977a74e39 (MD5) / Made available in DSpace on 2017-06-29T18:35:24Z (GMT). No. of bitstreams: 1 2016 - Elisabete Maria da Gra?a Costa do Nascimento.pdf: 1991326 bytes, checksum: cc5f12994a8bca0da10c49a977a74e39 (MD5) Previous issue date: 2016-02-26 / CAPES / Brazil is the largest producer and consumer in the world passion fruit and their production is growing every year due to the good acceptance of its juice. Passion fruit juice is a small part of the fruit and the peels presents a problem for the environment, loss of material rich in fiber and loss than may pose as a gain for the economy. The aim of this study was to present a safe possibility for exploitation and processing of passion fruit peel. For this was done drying with application of ultrasound(SCUS) on the drying kinetics and also tested the antioxidant property and quantified the cyanogenic glycosides. Bioassay with Artemia salina was undertaken to determine and assess the lethal dose for 50% of the population of A. salina (LD50). The cyanogenic glycosides Amygdalin and prunasin in passion fruit peel flour sample sold in the Rio de Janeiro market were quantified in samples processed by Lyophilization (L), processed by convective drying (SC) and samples submitted to the thermoplastic extrusion process(ET). Major benefits have been found in the use of passion fruit peel as an ingredient as the decrease of glucose levels in blood and cholesterol, anti-inflammatory action and other. The dietary fiber content was quantified by various authors and ranged 35-90% and these findings have encouraged the development of several products, for example, breakfast cereal, diets cookie, sweet biscuits, pasta, cereal bars and candies in syrup added flour of the passion fruit peel, and others, but few studies consider the quantification of residual cyanogenic as an important part of the evaluation. The cyanotic toxicity of some plants has been well established by epidemiological studies and exposure to cyanogenicglycosides food, from acute or chronic form, can cause neuropathology, goiter, cretinism endemic and sometimes death. It was carried out as a strategy for studying processes in the best conditions to obtain security for toxic levels of cyanogenic and preservation of bioactive compounds in the tested processes. For quantification of Amygdalin glycosides and prunasin were used high-performance liquid chromatography. The tests to evaluate the antioxidant activity were made using the method for the reduction of iron (Ferric-Reducing Ability Power (FRAP)) and by the measure of total phenolic compounds against the Folin Ciocalteu reagent. The result of drying with ultrasound coupled at the lower temperatures tested affected the kinetic accelerating the process and preserved better antioxidant capacity. The microstructure also revealed that during the drying process wrinkling of matrix cells behave more evenly going in the same direction and drying without the use of ultrasound cells show a more disorganized wrinkling. The results for A. salina bioassay showed that the LD50 for potassium cyanide was 2.83 mg kg-1 and passion fruit peels in natura 397.30 mg kg-1. The results of the quantification Amygdalin and prunasin for passion fruit peels drying process showed that only the sample with ultrasound coupled drying at a temperature of 40?C and had only one commercial levels below Brazilian ANVISA standards. The general conclusion was that there are not enough studies to prove that the use of passion fruit peel flour is harmless to human health and that exposure to cyanogenic, even at low levels, can provide a public health problem in Brazil. / O Brasil ? o maior produtor e consumidor de maracuj? do mundo e sua produ??o vem crescendo a cada ano devido ? boa aceita??o do seu suco. O suco de maracuj? representa uma pequena parte do fruto e a casca dele apresenta um problema para o meio ambiente, perda de material rico em fibras e perda do que ele pode representar como ganho para economia do pa?s. O objetivo desse estudo foi apresentar uma possibilidade segura para aproveitamento e processamento da casca do maracuj?. Para isso foi feito uma secagem com aplica??o do ultrassom (SCUS) sobre cianog?nicos. Foi feito um bioensaio com Artemia salinapara determinar e avaliar a dose letal para 50% da popula??o de A. salina (DL50). Foram quantificados os glicos?deos cianog?nicos Amigdalina e Prunasina em amostra de farinha de cascas de maracuj? vendidos no mercado do Rio de Janeiro, em amostras processadas por liofiliza??o (L), processadas por secagem convectiva (SC) e amostras submetidas ao processo de extrus?o termopl?stica (ET). Grandes benef?cios t?m sido encontrados no uso da casca do maracuj? como ingrediente como a diminui??o dos n?veis de glicose no sangue e de colesterol, a??o anti-inflamat?ria e outras. O teor de fibra alimentar foi quantificado por v?rios autores e variaram de 35 a 90% e esses achados t?m incentivado o desenvolvimento de diversos produtos como, por exemplo, cereal matinal, cookie diets, biscoitos doces, massa aliment?cia, barra de cereais e doces em calda adicionados da farinha da casca de maracuj?, e outros, por?m poucos estudos consideram a quantifica??o dos cianog?nicos residuais como parte importante da avalia??o. A toxicidade cianog?nica de alguns vegetais j? foi bem estabelecida por estudos epidemiol?gicos e a exposi??o a alimentos que cont?m glicos?deos cianog?nicos de forma aguda ou cr?nica pode causar neuropatologias, b?cio, cretinismo end?mico e algumas vezes morte. Assim, foi realizado como estrat?gia para o estudo processamentosnas melhores condi??espara se obter a seguran?a quanto aos n?veis t?xicos de cianog?nicos e a preserva??o dos compostos bioativos nos processos testados.Para quantifica??o dos glicos?deos Amigdalina e Prunasina foi utilizada cromatografia liquida de alta efici?ncia. Os testes para avaliar a atividade antioxidante foram feitos atrav?s do m?todo pela redu??o do ferro (Ferric-Reducing Ability Power (FRAP)) e pela medida dos compostos fen?licos totais frente ao reagente Folin Ciocalteu. O resultado da secagem com ultrassom acoplado nas mais baixas temperaturas testadas afetou a cin?tica acelerando o processo e preservou melhor a capacidade antioxidante. A microestrutura revelou tamb?m que durante o processo de secagem o enrugamento das c?lulas da matriz se comportam mais uniformemente acontecendo na mesma dire??o e na secagem sem o uso do ultrassom as c?lulas mostram um enrugamento mais desorganizado. Os resultados para o bioensaio com A. salina mostraram que a DL50 para cianeto de pot?ssio foi de 2,83 mg kg-1e para cascas de maracuj? in natura de 397,30 mg kg-1. Os resultados da quantifica??o de Amigdalina e Prunasina para os processos de secagem de cascas de maracuj? mostraram que apenas a amostra com secagem com ultrassom acoplado na temperatura de 40?C e uma comercial tiveram n?veis abaixo dos padr?es brasileiros da ANVISA. A conclus?o geral foi que n?o existem estudos suficientes que comprovem que a utiliza??o da farinha de casca de maracuj? ? in?cua ? sa?de humana e que uma exposi??o aos cianog?nicos, mesmo que em baixos n?veis, pode oferecer um problema de sa?de p?blica para o Brasil.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-05-10T19:19:55Z No. of bitstreams: 1 2012 - Felipe Reis Rodrigues.pdf: 1576034 bytes, checksum: f91efa30a06e540cab9e32f343fe64b0 (MD5) / Made available in DSpace on 2017-05-10T19:19:55Z (GMT). No. of bitstreams: 1 2012 - Felipe Reis Rodrigues.pdf: 1576034 bytes, checksum: f91efa30a06e540cab9e32f343fe64b0 (MD5) Previous issue date: 2012-07-20 / CAPES / In Brazil on December 23, 2003 the National Agency of Sanitary Surveillance - ANVISA has published the resolution number 360 (360 RDC). The purpose of this resolution was to repeal the laws related to nutrition labeling of packaged foods ready for consumption (DRC 39 and 40). The legislation of 2003 had the requirement on the labeling of food content of trans fatty acids, as well as specific characteristics of the information contained therein. Currently, epidemiological studies have be associated the consumption of trans fats to the risk of developing cardiovascular and chronic degenerative diseases. In addition, health professionals report that the children have shown high rates of obesity, a situation directly related to excessive consumption of manufactured products. In order to ensure the maintenance and promotion of health, the accuracy of food labels sold in Brazil, mainly in relation to lipid content present in them should be more effectively monitor. This work aimed to make a critical analysis of the nutritional labeling of ?minibolos? sold in the city of Rio de Janeiro, relating lipid profile and content of trans fatty acids and their claim presented. The methodology used for derivatization of fatty acids is characterized by the extraction transesterification. It consists of an acidic or basic catalysis, where there is a double exchange of glycerides of esters of fatty acids. The method described by Huang (2006) for methylation of fatty acids was subjected to the validation process to ensure the accuracy of the results. The determination and quantification of fatty acids were performed by gas chromatography (GC-FID) using fused silica capillary column CP-Sil 88 (100 mx 0.25 mm), at the Analytical Laboratory of Food and Beverage - LAAB. We analyzed the products containing the information to be free of trans fatty acids to quantify the actual levels of these products in order to ascertain whether the labels were described in reliable information. From the results, the obligation to inform in the labels quantities of trans fatty acids was sufficient to make available to brazilian consumers which foods are free of trans fatty acids and which still have trans fatty acids in the food industry. There were no trans fatty acids in the composition of the samples, what means that is a real assertion to be exempt from the same type of fatty acid. / No Brasil no dia 23 de dezembro de 2003 a Agencia Nacional de Vigil?ncia Sanit?ria ? ANVISA publicou a resolu??o de n?mero 360 (RDC 360). O objetivo desta resolu??o era revogar as legisla??es relacionadas a rotulagem nutricional de alimentos embalados prontos para consumo (RDC 39 e 40). A legisla??o de 2003 teve como principal caracter?stica a exig?ncia de se constar no r?tulo dos alimentos o teor de ?cidos graxos trans, al?m de caracter?sticas especificas das informa??es contidas no mesmo. Atualmente, estudos epidemiol?gicos t?m associado o consumo de gorduras trans ao risco do desenvolvimento de doen?as cardiovasculares e cr?nico-degenerativas. Al?m disso, profissionais da ?rea de sa?de relatam que a popula??o infantil tem apresentado ?ndices elevados de obesidade, situa??o diretamente relacionada ao consumo excessivo de produtos industrializados. Com o intuito de zelar pela manuten??o e promo??o da sa?de da popula??o, deve-se fiscalizar de forma mais efetiva a veracidade dos r?tulos dos alimentos comercializados no Brasil, principalmente em rela??o aos teores lip?dicos presentes nos mesmos. O presente trabalho teve por objetivos fazer uma an?lise cr?tica da rotulagem nutricional de minibolos comercializados em estabelecimentos varejistas na cidade do Rio de Janeiro, relacionando o perfil lip?dico e o teor de ?cidos graxos trans e sua alega??o apresentada. A metodologia empregada para a derivatiza??o dos ?cidos graxos ? caracterizada pela transesterifica??o. Ela consiste em uma cat?lise ?cida ou b?sica, onde h? uma dupla troca de acilglicer?is em ?steres de ?cidos graxos. O m?todo descrito por Huang (2006) para metila??o dos ?cidos graxos foi submetido ao processo de valida??o para assegurar a veracidade dos resultados obtidos. A determina??o e quantifica??o dos ?cidos graxos foram realizadas por cromatografia gasosa (CG-FID), utilizando coluna capilar de s?lica fundida CP-Sil 88 (100 m x 0.25 mm), do Laborat?rio Anal?tico de Alimentos e Bebidas ? LAAB. Foram analisados os produtos que cont?m a informa??o de serem isentos de ?cidos graxos trans para quantificar os teores reais destes produtos, visando averiguar se o descrito nos r?tulos eram informa??es fidedignas. A partir dos resultados, verificou-se em que medida a obrigatoriedade de informar nos r?tulos as quantidades de AG trans foi suficiente para tornar dispon?veis aos consumidores brasileiros quais os alimentos que s?o livres de ?cidos graxos trans e quais ainda possuem ?cidos graxos trans na ind?stria aliment?cia no Brasil. N?o foram encontrados AG trans na composi??o das amostras analisadas, sendo real a alega??o das mesmas serem isentas desse tipo de ?cido graxo.

CAPES / Even more people look for products that offer better quality of life and promote health. Goat's milk is considered a highly nutritious food; however, its characteristic flavor still makes this milk and dairy products little consumed by Brazilian consumers. The addition of probiotic cultures is a strategy to improve benefits for health, increase the aggregate value and stimulate the productive sector. Moreover, it also can improve the sensory characteristics of the products. The purpose of this study was to produce probiotic goat cheese type "Boursin" using two probiotic cultures and evaluate the physical-chemical, microbiological and sensory characteristics during 35 days in cold storage. Three treatments of goat cheese type "Boursin" were produced: without the addition of probiotic culture (Control), added of the probiotic Bifidobacterium animalis subsp. lactis BB12 (BB) and added of the probiotic Lactobacillus rhamnosus (LR). Physical-chemical analyzes of moisture, protein, fat, ash, pH and acidity were performed, and the count of Salmonella sp., Total Coliform and E. coli were also conducted. Counting of lactic acid bacteria was carried out to establish the viability of the probiotic during the shelf life and after in vitro simulation into the human gastrointestinal tract. The acceptance of different treatments was evaluated using 9- point structured hedonic scales. The samples and the expected Ideal goat cheese were characterized by cheese consumers using the Check-all- that-apply (CATA) methodology. Survival analysis was used to investigate the cheeses shelf life. Significant differences were observed (p <0.05) in the levels of protein, moisture and fat of the cheeses. It was found low counting of coliforms and Salmonella ssp. and E. coli in all samples. The viability of probiotic cultures B. lactis and L. rhamnosus was not affected during refrigerated storage of the products, reaching scores greater than 7 log CFU / g. B. lactis presented greater resistance to artificial gastric and enteric juices when compared to L. rhamnosus with 0.2 to 4 log CFU / g mean decreases of the initial populations, respectively. It was found difference in the participants? preference, and three groups of consumers have been identified. Consumers were able to perceive differences in sensory characteristics of the samples and none of them was similar to the Ideal goat cheese. The attributes that drove the acceptance and were considered necessary to increase the average acceptance were tenderness, nice appearance, smooth texture, pleasant aroma, mild aroma and white color. Sour taste and strong flavor were considered negative, responsible for causing a decrease in acceptance. The goat cheese samples reached shelf life longer than 35 days of storage. The results show that the goat cheese type "Boursin" is a promising matrix for incorporation of probiotic cultures B. lactis and L. rhamnosus being a viable strategy to improve the nutritional characteristics of cheeses and add value to the product, as it did not negatively affect the acceptance and cheeses? sensory characteristics. / Cada vez mais as pessoas buscam produtos que ofere?am melhor qualidade de vida e promovam a sa?de. O leite de cabra ? considerado um alimento de alto valor nutritivo; no entanto, seu sabor caracter?stico torna esse leite e derivados ainda pouco consumidos pelos consumidores brasileiros. A adi??o de culturas probi?ticas ? uma estrat?gia para melhorar os benef?cios ? sa?de, aumentar o valor agregado e estimular o setor produtivo. Al?m disso, pode melhorar as caracter?sticas sensoriais dos produtos. O objetivo desse estudo foi produzir queijo de cabra probi?tico tipo "Boursin" empregando duas culturas probi?ticas e avaliar as caracter?sticas f?sico-qu?micas, microbiol?gicas e sensoriais durante 35 dias de armazenamento refrigerado. Tr?s tratamentos de queijos de cabra tipo ?Boursin? foram processados: sem a adi??o de cultura probi?tica (Controle), adicionado do probi?tico Bifidobacterium animalis subsp. lactis ? BB12 (BB) e adicionado do probi?tico Lactobacillus rhamnosus (LR). Foram realizadas an?lises f?sico-qu?micas de umidade, prote?na, gordura, cinzas, pH e acidez. Pesquisa de Salmonella sp., Escherichia coli e coliformes totais tamb?m foram conduzidas. Contagens de bact?rias l?ticas foram realizadas para constatar a viabilidade dos probi?ticos durante a vida ?til e ap?s a simula??o in vitro da passagem dos probi?ticos pelo trato gastrointestinal humano. A aceita??o dos diferentes tratamentos foi avaliada por meio de escala hed?nica estruturada de 9 pontos. As amostras e o esperado no queijo de cabra Ideal foram caracterizadas por consumidores de queijo utilizando a metodologia Check-all-that-apply (CATA). A an?lise de sobreviv?ncia foi utilizada para investigar a vida ?til dos queijos. Foram encontradas diferen?as significativa (p < 0,05) nos teores de prote?na, umidade e gordura dos queijos. Verificou-se baixas contagens de coliformes totais e aus?ncia de Salmonella spp. e E. coli em todas as amostras analisadas. A viabilidade das culturas probi?ticas B. lactis e L. rhamnosus n?o foi afetada durante o armazenamento refrigerado dos produtos, com contagens acima de 7 Log UFC/g. B. lactis apresentou maior resist?ncia aos sucos g?stricos e ent?ricos quando comparada ao L. rhamnosus, com decr?scimos m?dios das popula??es iniciais de 0,2 e 4 Log UFC/g, respectivamente. Foi encontrada diferen?a na prefer?ncia dos participantes e tr?s grupos de consumidores foram identificados. Os consumidores foram capazes de perceber diferen?as nas caracter?sticas sensoriais das amostras e nenhuma delas foi semelhante ao esperado para queijo de cabra Ideal. Os atributos que dirigiram a aceita??o e considerados necess?rios para elevar a m?dia da aceita??o foram maciez, apar?ncia agrad?vel, textura suave, aroma agrad?vel, aroma suave e cor branca. Gosto ?cido e sabor forte foram considerados negativos, respons?veis por causar decr?scimo na aceita??o. As amostras de queijo de cabra alcan?aram vida ?til superior aos 35 dias de armazenamento. Os resultados demonstram que o queijo de cabra tipo "Boursin" ? uma matriz promissora para a incorpora??o das culturas probi?ticas B. lactis e L. rhamnosus, sendo uma estrat?gia vi?vel para melhorar as caracter?sticas nutricionais dos queijos e agregar valor ao produto, uma vez que n?o afetaram de maneira negativa a aceita??o e caracter?sticas sensoriais dos queijos.