Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-08-23T18:01:56Z No. of bitstreams: 1 2016 - Ana L?gia Panain de Souza Rezende.pdf: 2352671 bytes, checksum: 2325a74ffef5675199939b7af3f37d60 (MD5) / Made available in DSpace on 2017-08-23T18:01:56Z (GMT). No. of bitstreams: 1 2016 - Ana L?gia Panain de Souza Rezende.pdf: 2352671 bytes, checksum: 2325a74ffef5675199939b7af3f37d60 (MD5) Previous issue date: 2016-07-26 / CAPES / Vegetables are a source of nutrients essential to human health and have low caloric value. Among these, non-conventional vegetables also have other advantages such as hardiness and the lowest price, but lacks information on these species which prevents an increase in its production and consumption. Thus, the objective of this study was to cultivate the species Hibiscus sabdariffa, better known as vinagreira, characterize some of its constituents and estimate its shelf life potential when stored in polypropylene packaging with different perforations and stored at 5 ? 1 ?C. The vinagreira remained for approximately 120 days in field conditions in the Horticultural Sector UFRRJ. The branches were collected and transported to the Embrapa Food, which were washed, selected, arranged in bunches of about 150g and subjected to treatment consisting of the conical packaging polypropylene, perforated (P), not perforated (NP), micro perforated (MP) and control (C) in which the packs were stored without use of packaging. They were carried physical, physicochemical and chemical every two days storage. The design was completely randomized in split plots, and treatments in the plots and the days of storage in the subplot. The results were analyzed using SPSS. It was the homogeneity and normality of the data, followed by analysis of variance and significance according to Tukey test and/or regression analysis. For control, the analyzes were performed only until the fourth day of storage due to reduction of apparent quality such as wilting and color changes of the leaves, while those packaged in decreased the apparent quality, with symptoms of senescence the eighth day of storage. The leaves have a high levels of titratable acidity and carotenoids, being the predominant malic acid and the major carotenoid, the ?-carotene. It was concluded that vinagreira is well adapted Climate conditions Serop?dica-RJ, showing the source of compounds with antioxidant activity. With regard to cold storage, the use of plastic polypropylene packaging provided greater potential life for vegetables, because in these conditions the bunches could be sold for up to seven days after harvest without loss of quality, while the control bunches potential shelf life was less four days. / As hortali?as s?o fonte de nutrientes essenciais ? sa?de humana e possuem baixo valor cal?rico. Dentre estas, as hortali?as n?o-convencionais apresentam ainda outras vantagens como a rusticidade e o menor pre?o, por?m faltam informa??es sobre estas esp?cies o que impossibilita um aumento da sua produ??o e consumo. Desse modo, o objetivo do presente trabalho foi cultivar a esp?cie Hibiscus sabdariffa, mais conhecida como vinagreira, caracterizar alguns dos seus constituintes e estimar a sua vida ?til potencial, quando acondicionada em embalagens de polipropileno com diferentes perfura??es e armazenadas a 5 ? 1 ?C. A vinagreira permaneceu por aproximadamente 120 dias em condi??es de campo no Setor de Horticultura da UFRRJ. Os ramos foram colhidos e transportados para a Embrapa Agroind?stria de Alimentos, onde foram lavados, selecionados, arranjados em ma?os de aproximadamente 150 g e submetidos aos tratamentos, constitu?dos pelas embalagens c?nicas de polipropileno, perfurada (P), n?o perfurada (NP), micro perfurada (MP) e o controle (C) em que foram armazenados sem o uso de embalagens. Foram realizadas an?lises f?sicas, f?sico-qu?micas e qu?micas a cada dois dias do armazenamento. O delineamento utilizado foi o inteiramente casualizado, em esquema de parcelas subdivididas, tendo os tratamentos nas parcelas e os dias de armazenamento na subparcela. Os resultados foram submetidos a an?lises estat?sticas pelo programa SPSS. Verificou-se a homogeneidade e normalidade dos dados, com posterior an?lise de vari?ncia e de acordo com a signific?ncia procedeu-se o teste Tukey e/ou an?lise de regress?o. Para o controle, as an?lises foram realizadas somente at? o quarto dia do armazenamento, devido ? redu??o da qualidade aparente, como murchamento e altera??es de cor das folhas, enquanto para os ma?os acondicionados nas embalagens houve redu??o da qualidade aparente e sintomas de senesc?ncia ao oitavo dia do armazenamento. As folhas apresentaram elevado teor de acidez total titul?vel e de carotenoides, sendo o ?cido predominante o m?lico e o carotenoide majorit?rio, o ?-caroteno. Concluiu-se que a vinagreira se adapta bem as condi??es clim?ticas de Serop?dica-RJ, mostrando-se fonte de compostos com atividade antioxidante. Em rela??o ao armazenamento refrigerado, a utiliza??o de embalagens pl?sticas de polipropileno proporcionou maior vida ?til potencial para a hortali?a, pois nestas condi??es os ma?os poderiam ser comercializados por at? sete dias ap?s a colheita, sem preju?zo da qualidade, enquanto os ma?os do controle a vida ?til potencial foi inferior a quatro dias.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-11-12T20:55:15Z No. of bitstreams: 1 2013 - Cristiana Maia de Oliveira.pdf: 2253824 bytes, checksum: 0c49afa03412e03e8ba8d8d9e8b01029 (MD5) / Made available in DSpace on 2018-11-12T20:55:15Z (GMT). No. of bitstreams: 1 2013 - Cristiana Maia de Oliveira.pdf: 2253824 bytes, checksum: 0c49afa03412e03e8ba8d8d9e8b01029 (MD5) Previous issue date: 2013-07-23 / CNPq / The tomato has been widely cultivated in the state of Rio de Janeiro mainly by smallholders and family farmers that make use of organic agriculture as a way to add value to the culture. After harvest, the tomato presents itself as a highly perishable fruit, being a climacteric fruit, the ripening involves a number of changes in it physical and chemical characteristics. The main goal of this work was to evaluate the conservation and postharvest quality of cherry tomatoes Perinha ?gua Branca and Mascot cultivars, stored at room and controlled conditions. Three experiments were carried out: 1) postharvest longevity of fruits cherry tomato, 2) evaluation of the effect of cassava starch film on postharvest quality of fruits and 3) use of cinnamon essential oil to control pathogens. We carried out the following physico-chemical analyzes: weight loss, color, pH, titratable acidity, soluble solids, ascorbic acid and pectin methyl esterase activity. In the first experiment, we used fruits in the intermediate, pinky, red and mature stages to both cultivars. At room temperature, the post-harvest longevity of fruits in Perinha cultivar was 20 days in the pinky and 15 days to red and mature stages. ?Mascot? longevity was 24 days to the intermediate stage, 20 days for pinky and 15 days to red and mature stage. In controlled temperature postharvest longevity of fruits in Perinha cultivar was 24 days in the intermediate and pinky stages, 20 days to red and 15 days to mature. ?Mascot? longevity was 27 days in the intermediate and pinky stages, 24 days to red and to mature. In the second experiment, was used cassava starch coating in the following concentrations: 1%, 3% and 5%. It was observed that at room and controlled conditions cassava starch coating at a concentration of 3% promoted the best results, delaying the ripening and senescence while maintaining fruit quality. The concentration of 1% was similar to the control almost all the experimental period, while starch coating at 5% prevented the normal maturation process and showed high levels of infected fruits by fungi which affect the appearance and quality. The average activity of PME was higher in ?Mascot? fruits. The third experiment consisted in a combination of distilled water and starch coating at 3% associated with 0.1% and 0.3% concentrations of cinnamon essential oil. The cinnamon essential oil made changes on the fruit surface, causing stains and burns affecting the fruit quality. The oil was not effective in diseases control. / O tomate cereja vem sendo amplamente cultivado no Estado do Rio de Janeiro principalmente por pequenos produtores e pela agricultura familiar que fazem uso da agricultura org?nica como forma de agregar valor a cultura. O tomate ap?s a colheita apresenta-se como um fruto altamente perec?vel, sendo um fruto climat?rico seu amadurecimento acarreta uma s?rie de transforma??es em suas caracter?sticas f?sicas e qu?micas. Este trabalho teve por objetivo avaliar a conserva??o e qualidade p?s-colheita de tomates cereja cultivares Perinha ?gua Branca e Mascot, armazenados em condi??es ambiente e controlada. Foram realizados tr?s experimentos: 1) longevidade p?s-colheita de frutos de tomate cereja; 2) Avalia??o do efeito da pel?cula de f?cula de mandioca na qualidade p?s-colheita e 3) utiliza??o de ?leo essencial de casca de canela no controle de podrid?es. Foram realizadas as seguintes an?lises f?sicas e qu?micas: perda de massa fresca, cor, pH, acidez total titul?vel, s?lidos sol?veis, ?cido asc?rbico e atividade de pectinametilesterase. No experimento 1 foram utilizados frutos nos est?dios de vez, rosado, vermelho e maduro de ambas as cultivares. Em ambiente controlado, a longevidade p?s-colheita dos frutos da cultivar Perinha foi de 20 dias para os est?dios de vez e rosado e 15 dias para vermelho e maduro. Para ?Mascot? a longevidade foi de 24 dias para o est?dio de vez, 20 dias para rosado e 15 dias para vermelho e maduro. Em temperatura controlada, a longevidade p?s-colheita dos frutos da cultivar Perinha foi de 24 dias para de vez e rosado, 20 dias para vermelho e 15 dias para maduro. Para ?Mascot? a longevidade foi de 27 dias para de vez e rosado e 24 dias para vermelho e maduro. No experimento 2 foram utilizados revestimentos de f?cula de mandioca nas concentra??es de 1%, 3% e 5%. Foi observado que em condi??es ambiente e controlada, o revestimento de f?cula de mandioca na concentra??o de 3% foi o que promoveu melhores resultados retardando o processo de amadurecimento e senesc?ncia al?m de manter a qualidade dos frutos. A concentra??o de 1% se assemelhou ao controle durante quase todo per?odo experimental, enquanto que f?cula 5% impediu o processo normal de amadurecimento e mostrou alto ?ndice de frutos infectados por fungos comprometendo a apar?ncia e qualidade. A atividade m?dia de PME foi maior nos frutos de ?Mascot?. O experimento 3 consistiu da combina??o ?gua destilada e f?cula 3% associada a concentra??es de 0,1% e 0,3% de ?leo essencial de canela. O ?leo essencial de casca de canela promoveu altera??es na superf?cie dos frutos, provocando manchas e queimaduras afetando sua qualidade. O ?leo n?o foi efetivo no controle de podrid?es.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-10-18T10:52:37Z No. of bitstreams: 1 2015 - Bruna Rodrigues Pereira.pdf: 2671756 bytes, checksum: b38e36947fda465d9d78272a81b2e947 (MD5) / Made available in DSpace on 2017-10-18T10:52:37Z (GMT). No. of bitstreams: 1 2015 - Bruna Rodrigues Pereira.pdf: 2671756 bytes, checksum: b38e36947fda465d9d78272a81b2e947 (MD5) Previous issue date: 2015-09-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study aimed to evaluate the quality of 'Sweet Celebration' and 'Sweet Globe' grapes, subjected to minimally processing, as well as the effectiveness of three rinsing solutions (water, sodium metabisulfite and chlorine) and pedicel cut intensity (with and without pedicel), in the conservation of these fruits during 12 days refrigerated storage to temperature at 8 ? C . The experiments were performed at Embrapa Agroind?stria de alimentos. For both experiments were applied rinse solutions, with water, sodium metabisulfite (20 mg. L-1) and chlorine (8 mg. L-1), that characterized the treatments, during the rinse step of minimally processing grapes, it being used two pedicel cut intensities:full cut and maintenance of a little fragment about 0,5 cm. Quality analyzes were performed at 0, 3, 6, 9, and 12 days of storage, and it was determined fresh weight loss cumulative , fruit firmness, color analysis, acidity, pH, total soluble solids, SST/ATT rate , sugars (sucrose , fructose and glucose) and enzymatic activity of pectinametilesterase for both cultivars. For Sweet Celebration grapes were also carried out the percentage fruit loss (9th and 12th day of storage) and anthocyanins. In 'Sweet Globe' grapes were realized total carotenoids, chlorophylls (a, b and total) and microbiological analyses. To the cultivate Sweet Celebration was possible identify berries out of commercial standard in the 9? day of storage. In the fresh weight loss cumulative, berries without pedicel had higher loss in the rinse with water from the 6th day of storage. For berries with pedicel the rinse with chlorine had the lowest fresh weight loss cumulative up 9th day of storage. For the firmness , berries without pedicel (4.44 N) had lower firmness compared to berries with pedicel (5.04 N), there wasn't significant difference between the rinsing solutions (p> 0.05). To cultivate Sweet Globe, berries with pedicel and rinsed with water had higher fresh weight loss cumulative from the 9th day of storage. In the berries without pedicel the rinse with water led to lower fresh weight loss cumulative from the 6th day of storage. There was no difference between the isolated factors rinse solutions and pedicel cut intensit to the firmness analysis. All rinse solutions were efficient in the microbiological analysis, so the minimally processed Sweet Globe grapes were in the standard established by law for human consumption / O presente trabalho objetivou avaliar a qualidade de uvas ?Sweet Celebration? e ?Sweet Globe?, submetidas ao processamento m?nimo, assim como a efetividade de tr?s solu??es enxaguantes (?gua, metabissulfito de s?dio e cloro) e da intensidade de corte do pedicelo (com e sem pedicelo), na conserva??o desses frutos, durante 12 dias de armazenamento refrigerado a 8?C. Os experimentos foram realizados na Embrapa agroind?stria de alimentos. Para ambos experimentos, foram aplicadas solu??es de enx?gue, com ?gua, metabissulfito de s?dio (20 mg. L-1) e cloro (8 mg. L-1), que caracterizaram os tratamentos, durante a etapa de enx?gue do processamento m?nimo das uvas, sendo adotadas duas intensidades de corte do pedicelo: retirada total do mesmo e manuten??o de um pequeno fragmento com aproximadamente 0,5 cm. Foram realizadas an?lises de qualidade nos 0, 3, 6, 9, e 12 dias de armazenamento, sendo determinadas a perda acumulada de massa fresca, firmeza dos frutos, an?lise de cor, acidez, pH, s?lidos sol?veis totais, rela??o SST/ATT, a??cares (sacarose, frutose e glicose) e atividade enzim?tica da pectinametilesterase para as duas cultivares. Para as uvas Sweet Celebration, foram tamb?m realizadas a porcentagem de perda de frutos (9? e 12? dia de armazenamento) e antocianinas totais. Para as uvas ?Sweet Globe?, foram realizadas as an?lises de caroten?ides totais, clorofilas (a, b e total) e an?lise microbiol?gica. Para a cultivar Sweet Celebration, foi poss?vel detectar bagas fora de padr?o comercial no 9?dia de armazenamento. Na perda acumulada de massa fresca, bagas sem pedicelo apresentaram maior perda no enx?gue com ?gua a partir do 6? dia de armazenamento. Para bagas com pedicelo o enx?gue com cloro apresentou a menor perda acumulada de massa fresca at? o 9? dia de armazenamento. Para a firmeza das bagas, bagas sem pedicelo (4,44 N) apresentaram menor firmeza, quando comparadas ?s bagas com pedicelo (5,04 N), n?o havendo diferen?a significativa entre as solu??es de enx?gue (p> 0,05). Para a cultivar Sweet Globe, bagas com pedicelo e enxaguadas com ?gua, apresentaram maior perda acumulada de massa fresca , a partir do 9? dia de armazenamento. Para bagas sem pedicelo o enx?gue com ?gua levou a menor perda acumulada de massa fresca a partir do 6? dia de armazenamento. N?o houve diferen?a entre os fatores isolados solu??es de enx?gue e intensidade de corte do pedicelo para a an?lise de firmeza. Todas as solu??es de enx?gue foram eficientes do ponto de vista microbiol?gico, estando as uvas Sweet Globe minimamente processadas dentro do padr?o estabelecido pela legisla??o para consumo humano

Submitted by Jadson Francisco de Jesus SILVA (jadson@uefs.br) on 2018-01-26T22:34:01Z No. of bitstreams: 1 Disserta??o MENEZES 2017 Finall.pdf: 3387889 bytes, checksum: a259fed71288e6ff503358d33dc0e467 (MD5) / Made available in DSpace on 2018-01-26T22:34:01Z (GMT). No. of bitstreams: 1 Disserta??o MENEZES 2017 Finall.pdf: 3387889 bytes, checksum: a259fed71288e6ff503358d33dc0e467 (MD5) Previous issue date: 2017-09-05 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The increase in the world?s population, the current rate of consumption and, consequently, generation of waste, implies an unsustainable use of the planet's resources for the production of goods. Solid waste is continuously generated in all steps of the production chain, and even after consumption, since their disposal requires the use of large areas, causing a double impact on the environment. Aiming to contribute for the quality of municipal solid waste management, the present study proposed the following scenarios to simulate waste generation: i) Scenario 1, which considers the current situation of Feira de Santana, without the use of recycling rates for dry and moist waste; ii) Scenario 2, where the recycling of materials based on PLANARES is applied; iii) Scenario 3, which adopts the recycling targets set forth in the PMGIRS; iv) Scenario 4A, with recycling targets proposed by PLANARES, together with the reduction of generation per capita and increase of the collection rate; v) Scenario 4B, with recycling targets proposed by the PMGIRS, combined with the reduction of generation per capita and increase of the collection rate; and, vi) Scenario 5, which allows for bold recycling targets, combined with the decrease in per capita production and growth of the collection rate. Based on these simulations, the impacts of each scenario were evaluated on increasing the life expectancy of the municipal landfill, and saving energy by recycling materials that are no longer being sent to the landfill. The results showed that: i) Increase in the useful life of the Feira de Santana landfill by 11, 17, 18 and 26 years, according to scenarios 2, 3, 4A and 4B, respectively. For scenario 5, the useful life of the municipal landfill does not end until the final analysis year (2075); (ii) The results obtained may also specify the mass quantity of waste that will no longer be sent to the landfill over the simulated years, namely: 77,000 t, 119,000 t, 92,000 t, 136,000 t, 212,000 t according to scenarios 2, 3, 4A, 4B and 5, respectively; iii) Can be saved in Feira de Santana in 2050 for scenario 5, the most expressive, approximately 1027 GWh, enough to supply close to 2.1 million households, considering the monthly consumption of 163 KWh and a average of 3 people per residence; (iv) Dry waste is 98% more economical than wet waste, since the potential of both was 202 GWh and 10 GWh respectively in 2050; v) Plastic stands out as the dry material with the greatest potential for energy savings. According to scenario 5, this material could save about 749 GWh, enough to supply approximately 1.5 million households; vi) The simulations presented in this paper, related to the use of material recycling rates and other management options, have proved to be more efficient in relation to the goals established by scenario 5 for all analysis parameters.Taking into account that the assessment and simulation were limited to secondary data due to the lack of consistent local information, it can be inferred that there was a reduction of environmental impacts for Feira de Santana with the adoption of municipal recycling goals. Through their implementation, it will be possible to extend the life expectancy of the municipal landfill, as well as provide energy savings and gains for the municipality. / O aumento da popula??o mundial, acrescida da atual forma de consumo, e, consequentemente, da gera??o de res?duos, implica o aumento do uso das reservas do planeta. Para se obter a mat?ria-prima bruta, em todos os passos at? sua transforma??o em bens de consumo, s?o continuamente produzidos res?duos, inclusive ap?s o consumo, uma vez que, os bens dur?veis foram fabricados para serem usados e descartados, o que caracteriza, portanto, um impacto dobrado, observando-se ainda que, al?m do uso das reservas, s?o demandados locais para depositar esses materiais ap?s utiliza??o. Visando auxiliar no tocante ? qualidade da gest?o dos res?duos, no presente trabalho foram propostos os seguintes cen?rios metodol?gicos: i) Cen?rio 1, que considera a situa??o atual de Feira de Santana, sem emprego de taxas de reciclagem para res?duos secos e ?midos; ii) Cen?rio 2, onde se aplica a reciclagem de materiais com base no PLANARES; iii) Cen?rio 3, que adota as metas de reciclagem previstas no PMGIRS; iv) Cen?rio 4A, com metas de reciclagem propostas pelo PLANARES, aliadas ? redu??o da gera??o per capita e aumento da taxa de coleta; v) Cen?rio 4B, com metas de reciclagem propostas pelo PMGIRS, aliadas ? redu??o da gera??o per capita e aumento da taxa de coleta; e, vi) Cen?rio 5, que admite metas de reciclagem arrojadas, aliadas ? diminui??o da produ??o per capita e crescimento da taxa de coleta. A partir dessas simula??es, foram avaliados os impactos de cada cen?rio no aumento de vida ?til do aterro sanit?rio municipal, e tamb?m na economia e gera??o de energia por meio da reciclagem de materiais que deixam de ser encaminhados ao aterro. Os resultados obtidos revelam: i) Aumento da vida ?til do aterro sanit?rio de Feira de Santana por 11, 17, 18 e 26 anos, de acordo com os cen?rios 2, 3, 4A e 4B, respectivamente. Para o cen?rio 5, a vida ?til do aterro municipal n?o se encerra at? o ano final de an?lise (2075); ii) Os resultados obtidos tamb?m podem precisar a quantidade em massa de res?duos que deixar? de ser encaminhada ao aterro sanit?rio ao longo dos anos simulados, a saber: 77 mil t, 119 mil t, 92 mil t, 136 mil t, 212 mil t de acordo com os cen?rios 2, 3, 4A, 4B e 5, respectivamente; iii) Podem ser poupados em Feira de Santana, em 2050, para o cen?rio 5, o mais expressivo, aproximadamente 1027 GWh, o suficiente para abastecer perto de 2,1 milh?es de resid?ncias, considerando-se o consumo mensal de 163 KWh e uma m?dia de 3 pessoas por resid?ncia; iv) Os res?duos secos possuem uma economia 98% maior em rela??o aos res?duos ?midos, j? que o potencial poupado por ambos para o ano de 2050 ?, respectivamente, 602 GWh e 10 GWh; v) O pl?stico destaca-se como o material seco de maior potencial de economia de energia. De acordo com o cen?rio 5, esse material poderia poupar cerca de 749 GWh, o suficiente para abastecer, aproximadamente, 1,5 milh?o de resid?ncias; vi) As simula??es apresentadas neste trabalho, relativas ao emprego de taxas de reciclagem de materiais e outras op??es de gest?o, mostraram-se mais eficientes em rela??o ?s metas estabelecidas pelo cen?rio 5 para todos os par?metros de an?lise. Levando-se em considera??o que as an?lises desenvolvidas neste trabalho se limitaram a dados secund?rios por falta de dados locais consistentes, pode-se inferir que houve redu??o dos impactos ambientais para Feira de Santana com a ado??o de metas de reciclagem, uma vez que, por meio dessas metas ser? poss?vel estender a vida ?til do aterro sanit?rio, bem como proporcionar economias e ganhos energ?ticos para o munic?pio em quest?o.