In the Australian wine industry, cold stabilisation is a widely used industrial process to prevent tartrate instability in bottled wines. This process involves cooling the wine close to its freezing point for extended periods, thereby inducing tartrate precipitation. However, it has several important disadvantages. Consequently, alternative methods to cold stabilisation have been developed. This includes electrodialysis, nanofiltration and contact processes. In this study, current knowledge regarding performance and cost of cold stabilisation and alternative technologies for tartrate stabilisation is reviewed. Whilst there have been occasional cost comparisons between cold stabilisation and alternative technologies, existing data is not suitable for properly evaluating the relative economics of the different process options. Therefore, alternative technologies to cold stabilisation, including the Westfalia process, nanofiltration and electrodialysis were compared for both technical and economic performance. Berri Estates Winery was used as the basis for engineering calculations and conceptual cost estimates. This is the first time that such a comprehensive evaluation has been undertaken of a broad range of alternative technologies for tartrate stabilisation during wine production. Product loss was a key cost driver in differentiating tartrate stabilisation processes. Cold stabilisation was found to be the most economic treatment process irrespective of scale or winery size. The Westfalia process and nanofiltration were the next most cost effective options. Data for economic evaluation and environmental assessment were summarised in a survey form that was circulated to technical experts from Hardy Wine Company, the Australian Wine Research Institute (AWRI) and the University of Adelaide. The purpose of the survey was to obtain the experts’ opinions on the merits of the alternative technologies. The results of this survey were used for comparison between current cold stabilisation and alternative technologies, by performing multi-criteria decision analysis (MCDA). This represents an original application of MCDA techniques to decision making in the wine industry. The MCDA analysis identified a strong preference by experts for nanofiltration combined with centrifugation as an alternative to cold stabilisation. As a consequence, laboratory investigations and field testing of nanofiltration were conducted to obtain new and practical information which was not presently available and relevant to understanding and implementing this process for tartrate stabilisation of wine. The laboratory experiments were performed with a range of membranes and tartrate unstable wines (i.e. Semillon, Colombard and Shiraz) using a purpose-designed laboratory-scale continuously-stirred batch-test membrane cell. The results showed that a range of commercial nanofiltration membranes with a nominal molecular weight cut-off (MWCO) between 200 and 500 Daltons (Da) were able to achieve tartrate stabilisation of all wines tested. This was achieved at moderate pressures less than 20 bar with a recovery of at least 50 %. It was also observed that seeding of wine following nanofiltration might reduce the holding time required to achieve stability and also enable reductions in the recovery rate to values of less than 50 %. The field testing was performed at Berri Estates Winery in the Riverland region of South Australia. The testing was performed using an existing commercial membrane system. This membrane system was already used for juice/wine concentration. The nanofiltration membranes had a nominal MWCO of 300 Da. The testing was conducted on Colombard and Shiraz wines. The field tests confirmed that nanofiltration could successfully tartrate stabilise Colombard and Shiraz wines at recoveries of 50 %; without seeding; within relatively short holding periods of less than four hours; and at flux rates between 5 and 10 L/m²/h. Crystallisation kinetics were also studied. At low recovery, the crystallisation was initially controlled by diffusion step, then surface integration. However, at high recovery, the crystallisation was controlled solely by surface integration. Sensory testing (by duo-trio difference tests) produced adverse sensory outcomes when compared with treatment of the same wines by cold stabilisation. Unfortunately, it could not be established whether this problem was inherent to the process or arose from unrelated factors. Setting aside the adverse sensory result, this is the first time that technical feasibility of nanofiltration for tartrate stabilisation has been successfully demonstrated. Further field testing and sensory evaluation of nano-filtered wines should be carried out to verify the effect of nanofiltration on wines. If the process is successful and favourable, the process design for implementation of a production scale nanofiltration for tartrate stabilisation should then be optimised. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1292872 / Thesis (Ph.D.) -- University of Adelaide, School of Chemical Engineering, 2007.

In the Australian wine industry, cold stabilisation is a widely used industrial process to prevent tartrate instability in bottled wines. This process involves cooling the wine close to its freezing point for extended periods, thereby inducing tartrate precipitation. However, it has several important disadvantages. Consequently, alternative methods to cold stabilisation have been developed. This includes electrodialysis, nanofiltration and contact processes. In this study, current knowledge regarding performance and cost of cold stabilisation and alternative technologies for tartrate stabilisation is reviewed. Whilst there have been occasional cost comparisons between cold stabilisation and alternative technologies, existing data is not suitable for properly evaluating the relative economics of the different process options. Therefore, alternative technologies to cold stabilisation, including the Westfalia process, nanofiltration and electrodialysis were compared for both technical and economic performance. Berri Estates Winery was used as the basis for engineering calculations and conceptual cost estimates. This is the first time that such a comprehensive evaluation has been undertaken of a broad range of alternative technologies for tartrate stabilisation during wine production. Product loss was a key cost driver in differentiating tartrate stabilisation processes. Cold stabilisation was found to be the most economic treatment process irrespective of scale or winery size. The Westfalia process and nanofiltration were the next most cost effective options. Data for economic evaluation and environmental assessment were summarised in a survey form that was circulated to technical experts from Hardy Wine Company, the Australian Wine Research Institute (AWRI) and the University of Adelaide. The purpose of the survey was to obtain the experts’ opinions on the merits of the alternative technologies. The results of this survey were used for comparison between current cold stabilisation and alternative technologies, by performing multi-criteria decision analysis (MCDA). This represents an original application of MCDA techniques to decision making in the wine industry. The MCDA analysis identified a strong preference by experts for nanofiltration combined with centrifugation as an alternative to cold stabilisation. As a consequence, laboratory investigations and field testing of nanofiltration were conducted to obtain new and practical information which was not presently available and relevant to understanding and implementing this process for tartrate stabilisation of wine. The laboratory experiments were performed with a range of membranes and tartrate unstable wines (i.e. Semillon, Colombard and Shiraz) using a purpose-designed laboratory-scale continuously-stirred batch-test membrane cell. The results showed that a range of commercial nanofiltration membranes with a nominal molecular weight cut-off (MWCO) between 200 and 500 Daltons (Da) were able to achieve tartrate stabilisation of all wines tested. This was achieved at moderate pressures less than 20 bar with a recovery of at least 50 %. It was also observed that seeding of wine following nanofiltration might reduce the holding time required to achieve stability and also enable reductions in the recovery rate to values of less than 50 %. The field testing was performed at Berri Estates Winery in the Riverland region of South Australia. The testing was performed using an existing commercial membrane system. This membrane system was already used for juice/wine concentration. The nanofiltration membranes had a nominal MWCO of 300 Da. The testing was conducted on Colombard and Shiraz wines. The field tests confirmed that nanofiltration could successfully tartrate stabilise Colombard and Shiraz wines at recoveries of 50 %; without seeding; within relatively short holding periods of less than four hours; and at flux rates between 5 and 10 L/m²/h. Crystallisation kinetics were also studied. At low recovery, the crystallisation was initially controlled by diffusion step, then surface integration. However, at high recovery, the crystallisation was controlled solely by surface integration. Sensory testing (by duo-trio difference tests) produced adverse sensory outcomes when compared with treatment of the same wines by cold stabilisation. Unfortunately, it could not be established whether this problem was inherent to the process or arose from unrelated factors. Setting aside the adverse sensory result, this is the first time that technical feasibility of nanofiltration for tartrate stabilisation has been successfully demonstrated. Further field testing and sensory evaluation of nano-filtered wines should be carried out to verify the effect of nanofiltration on wines. If the process is successful and favourable, the process design for implementation of a production scale nanofiltration for tartrate stabilisation should then be optimised. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1292872 / Thesis (Ph.D.) -- University of Adelaide, School of Chemical Engineering, 2007.

In an effort to increase beef demand, the beef industry has expanded beyond commodity beef merchandizing into value-added cuts. As these beef cuts are developed it is critical that the industry be able to characterize the flavor attributes of these products. A trained sensory panel is typically utilized to determine flavor characteristics of food products including beef. Prior to product evaluation, a product lexicon or dictionary of terms is developed in order to anchor and orient panelists to the various samples. Once the lexicon is developed, it can be used by a descriptive panel to evaluate samples. Currently, the beef industry does not have a full beef flavor lexicon with defined references; therefore a comprehensive sensory lexicon for describing the aroma and flavor of beef was developed by a 6-member panel at Kansas State University with extensive experience in lexicon development and descriptive analysis. Three descriptive panels utilized the beef flavor lexicon developed in Phase I by Kansas State University to evaluate the effect of USDA Quality Grade and cut on beef flavor and to validate the beef flavor lexicon to determine if it is ready for use by scientists. iv Results indicated that Choice steaks and roasts were higher in fat-like, and overall sweet flavor. Eye of round roasts were lowest in aroma and flavor attributes and bottom round roasts were highest in liver-like flavor. Flat iron steaks were highest in fat-like flavor compared to other cuts and top loin steaks tended to have the lowest intensity in flavor attributes compared to the steak cuts. The three sensory panels rated steaks and roasts similarly for aroma and flavor attributes and were generally less than 2- to 1-point different in rating intensities. The beef flavor lexicon was easily applied across the three institutions and should be ready to be used as a viable research and product development tool.

Made available in DSpace on 2014-06-11T19:23:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-11-24Bitstream added on 2014-06-13T20:50:29Z : No. of bitstreams: 1 santos_vr_me_arafcf.pdf: 518686 bytes, checksum: 1d1116ed450de58c7b14e2cb0bbfce4b (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Aguardente de cana é a segunda bebida alcoólica mais consumida no Brasil, estimando-se sua produção em cerca de 1,2 bilhão de litros/ano. Em 2009 foram exportados 10,83 milhões de litros gerando uma receita de US$ 15,58 milhões. Dentre os principais mercados de destino estão Alemanha, Estados Unidos, Portugal e França (ALVES, 2009). Diante das novas exigências do mercado, os produtores começam a se preocupar em agregar maior valor à bebida, investindo em novas tecnologias e aperfeiçoamento de pessoal, no controle de qualidade e oferecendo embalagens mais sofisticadas, com o intuito de inserir a cachaça nos melhores pontos de consumo do país, ao lado de outras bebidas destiladas já consagradas no país e no mundo. A adição de açúcar tem sido utilizada como uma forma de padronizar o sabor de algumas bebidas destiladas, visando reduzir o sabor do etanol e eventuais defeitos sensoriais (CARDELLO e FARIA, 2000). O objetivo deste estudo foi avaliar o efeito da adição de açúcar na qualidade sensorial da cachaça, comparando-se amostras obtidas tradicionalmente e redestiladas contendo, diferentes concentrações de açúcar. As amostras foram obtidas a partir de um mesmo lote de aguardente tradicional considerada de baixa aceitação com graduação alcoólica de 47%. Inicialmente foram obtidas sete amostras, contendo concentrações crescentes de açúcar, que foram então diluídas para 40ºGL. Posteriormente após redestilação do lote acima referido foram obtidas amostras, contento também concentrações crescentes de açúcar e também diluídas para 40º GL. As 14 amostras de aguardente, obtidas conforme acima descrito, foram então submetidas a testes de aceitação em relação aos atributos aroma, sabor, doçura e impressão global, e atitude de compra. Os resultados demonstraram que a prática de adicionar açúcar na cachaça... / Sugarcane liquor is the second most consumed beverage in Brazil, with estimated production at about 1.2 billion liters/year. In 2009 exports reached 10.83 million liters generating revenues of US$ 15.58 million. Among the main destination markets are Germany, United States, Portugal and France. 7 The addition of sugar has been used as a way to standardize the flavor of some liquor, to reduce the taste of ethanol and other sensory defects. 3 The purpose of this study was to evaluate the effect of adding different concentrations of sugar in the sensory quality of cachaça, comparing samples obtained by the traditional way and by re-distillation. From the same bach of “cachaça” obtained traditionally and considered of low acceptance, seven samples were added of increasing concentrations of sugar, end then diluted to 40 GL. Subsequently, a volume of the same batch was redistilled in order to obtain more seven samples, also having increased concentrations of sugar and also diluted to 40 GL. These samples were then tested for acceptance in relation to the attributes aroma, flavor, sweetness, overall impression and purchase attitude. The results showed that the practice of adding sugar undoubtedly influences positively the final product acceptance, minimizing sensory defects related to inadequate techniques of production, as well showed that the re-distillation process may also improve the acceptance of the Brazilian cachaça

Made available in DSpace on 2015-04-17T14:49:39Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 940588 bytes, checksum: 5120d3efc15e1e3d58af5bf40a2d3b75 (MD5) Previous issue date: 2013-05-29 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / The Brazil wastes annually 26.3 million tons of food waste generated for banana 30% is composed of the shell, the industrialization these are usually discarded serving only as animal feed. However, if properly handled, can be used as a raw material for producing new products. The banana peel flour has nutritional elements relevant, especially with regard to the minerals, and thus has the potential to be applied to value-added products. This study aimed to develop flour biscuit base of banana (Musa sapientium), the variety Pacovan, rich in potassium, calcium and magnesium. The flour was obtained by convective drying under the conditions of a temperature of 60 ° C, 60 minutes and air velocity of 1 m / s, then was held grinding operation. Analyses were performed using physicochemical, for the raw material fresh, flour and biscuits. Five formulations were defined for the cookies: control, 25%, 50%, 75% and 100% flour banana peel. In the sensory analysis, we used a panel of 57 tasters were asked to evaluate these, in general, the acceptability of each sample using a nine point hedonic scale. The analysis of the data, with the exception of the sensory analysis was performed by analysis of variance. To the flour was found moisture values (7.83 %) and ash (7.56 %) in accordance with current legislation, and excellent levels of minerals potassium (3.670 mg/100 g), calcium (610 mg/100g) and magnesium (290 mg/100g). The biscuits also showed moisture and water activity within the standards and values of ash high, as expected. With respect to sensory analysis, the control formulations, 25 and 50% achieved the best scores with respect to all attributes and overall acceptability. Thus, it can be stated that the flour banana peel is considered a good choice of raw material for the production of biscuits and bakery products. / O Brasil desperdiça, anualmente 26,3 milhões de toneladas de alimentos, dos resíduos gerados para banana 30% são compostos da casca, na industrialização estas são geralmente descartadas servindo apenas como ração para animais. Contudo, se devidamente tratadas, podem ser utilizadas como matéria-prima para a produção de novos produtos. A farinha da casca da banana possui elementos nutricionais relevantes, principalmente no que diz respeito aos minerais , e desta forma possui potencial para ser aplicada a produtos com valor agregado. Objetiva-se com este trabalho desenvolver biscoitos a base de farinha de casca de banana (Musa sapientium), da variedade Pacovan, ricos em potássio, cálcio e magnésio. A farinha foi obtida através de secagem convectiva da casca da banana, nas condições de temperatura de 60 ºC, tempo de 60 minutos e velocidade do ar de 1 m/s, em seguida foi realizada a operação de moagem. Foram realizadas as análises físico-químicas, para a matéria-prima in natura, farinha e os biscoitos. Cinco formulações foram definidas para os biscoitos: controle, 25, 50, 75 e 100 % de farinha de casca de banana. Na análise sensorial, foi utilizado um painel de 57 provadores, estes foram instruídos para avaliar, em geral, a aceitabilidade de cada amostra utilizando escala hedônica de nove pontos. A análise dos dados, com exceção os da análise sensorial, foi realizada mediante análise de variância . Para a farinha foi foram encontrados valores de umidade (7,83 %) e cinzas (7,56 %) de acordo com a legislação vigente, e excelentes teores dos minerais potássio (3.670 mg/100g), cálcio (610 mg/100g) e magnésio (290 mg/100g). Os biscoitos também apresentaram umidade e atividade de água dentro dos padrões, e valores de cinzas elevados, como esperado. Com relação à análise sensorial, as formulações controle, 25 e 50 % obtiveram os melhores escores com relação a todos os atributos analisados e a aceitação global. Desta forma, pode-se afirmar que a farinha da casca de banana é considerada uma boa opção de matéria-prima para produção de biscoitos e produtos de panificação.

Orientador: João Bosco Faria / Banca: Elizeu Antonio Rossi / Banca: Fernando Valadares Novaes / Resumo: Aguardente de cana é a segunda bebida alcoólica mais consumida no Brasil, estimando-se sua produção em cerca de 1,2 bilhão de litros/ano. Em 2009 foram exportados 10,83 milhões de litros gerando uma receita de US$ 15,58 milhões. Dentre os principais mercados de destino estão Alemanha, Estados Unidos, Portugal e França (ALVES, 2009). Diante das novas exigências do mercado, os produtores começam a se preocupar em agregar maior valor à bebida, investindo em novas tecnologias e aperfeiçoamento de pessoal, no controle de qualidade e oferecendo embalagens mais sofisticadas, com o intuito de inserir a cachaça nos melhores pontos de consumo do país, ao lado de outras bebidas destiladas já consagradas no país e no mundo. A adição de açúcar tem sido utilizada como uma forma de padronizar o sabor de algumas bebidas destiladas, visando reduzir o sabor do etanol e eventuais defeitos sensoriais (CARDELLO e FARIA, 2000). O objetivo deste estudo foi avaliar o efeito da adição de açúcar na qualidade sensorial da cachaça, comparando-se amostras obtidas tradicionalmente e redestiladas contendo, diferentes concentrações de açúcar. As amostras foram obtidas a partir de um mesmo lote de aguardente tradicional considerada de baixa aceitação com graduação alcoólica de 47%. Inicialmente foram obtidas sete amostras, contendo concentrações crescentes de açúcar, que foram então diluídas para 40ºGL. Posteriormente após redestilação do lote acima referido foram obtidas amostras, contento também concentrações crescentes de açúcar e também diluídas para 40º GL. As 14 amostras de aguardente, obtidas conforme acima descrito, foram então submetidas a testes de aceitação em relação aos atributos aroma, sabor, doçura e impressão global, e atitude de compra. Os resultados demonstraram que a prática de adicionar açúcar na cachaça... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Sugarcane liquor is the second most consumed beverage in Brazil, with estimated production at about 1.2 billion liters/year. In 2009 exports reached 10.83 million liters generating revenues of US$ 15.58 million. Among the main destination markets are Germany, United States, Portugal and France. 7 The addition of sugar has been used as a way to standardize the flavor of some liquor, to reduce the taste of ethanol and other sensory defects. 3 The purpose of this study was to evaluate the effect of adding different concentrations of sugar in the sensory quality of cachaça, comparing samples obtained by the traditional way and by re-distillation. From the same bach of "cachaça" obtained traditionally and considered of low acceptance, seven samples were added of increasing concentrations of sugar, end then diluted to 40 GL. Subsequently, a volume of the same batch was redistilled in order to obtain more seven samples, also having increased concentrations of sugar and also diluted to 40 GL. These samples were then tested for acceptance in relation to the attributes aroma, flavor, sweetness, overall impression and purchase attitude. The results showed that the practice of adding sugar undoubtedly influences positively the final product acceptance, minimizing sensory defects related to inadequate techniques of production, as well showed that the re-distillation process may also improve the acceptance of the Brazilian cachaça / Mestre

The aim of this thesis was to evaluate the sensory analysis by selected types of yogurt on the basis of two production technologies, which are the tankmethod and thermostatmethod. It were selected 4 types of white non-flavored yogurt ? Hollandia Farm yogurt, South white yogurt, South yogurt NATURE and natural yogurt KLASIK. Sensory analysis were evaluate at descriptors ? the release of whey, skim on the surface, color, aroma, consistency, texture, intensity of different flavor, overall impression of yogurt. The chemical analysis was determined dry matter content, fat content, titratable acidity (in °SH) and active acidity (pH). When comparing the impact of technology, it was found, that thermostat method had a greater effect on intensity of sweet taste, after taste intensity, texture and tankmethod influenced more by the intensity of sour taste, pleasantness color, overall pleasantness of smell and consistency.

Meat products belong into a popular group of foodstuffs intended for human consumption. Upon cancellation of state standards after 1992 it was possible to register an increase in distribution of products into shopping networks under the same name but with different ingredients. An analysis of the content of basic ingredients and of the sensory quality was carried out on selected samples of heat-treated meat products (20 products, 17 producers) bought in various types of shops. The contents of basic ingredients (water, fat, salt, proteins, collagen) were measured in a laboratory with the help of the NIRFLEX N 500 instrument, and no results of measurement at the level of conclusiveness (p < 0.05) were statistically evidenced. The best evaluation was granted by the assessors (6 persons) to the sample of the "Junior" group from producer "Fleischwaren Berger" from the Billa supermarket, while the worst evaluation belonged to the sample of the "Chicken Junior" group from producer "Schneider Masokombinát Plzeň" from the Albert supermarket.

The subject of this thesis was to evaluate the use of sweeteners in a selected group of soft drinks in terms of influencing sensory quality. Using selected methods of sensory analysis were five kinds of non-alcoholic drinks evaluated - four orange lemonades and one mandarin, which contained different composition of sweeteners. Three out of five samples were suitable for diabetics, because they only contained synthetic alternative sweeteners, one sample contained fructose-glucose syrup and the last sample contained sucrose. Individual samples were assessed by evaluators divided into three groups according to age. First group were evaluators at the age of 11-14, pupils from primary school Kosova Hora, second group - students of University of South Bohemia and the last group were evaluators above 40. The aim of this thesis was to lead to different results in different groups, depending on the attitudes and habits. There were big differences recorded among studied samples. It is interesting that neither group had failed to identify the best sample E, which is only sucrose. The top rated samples were sample A containing aspartame and acesulfame K, and the sample D with fructose-glucose syrup. The worst samples were clearly identified samples B and C, containing three and four kinds of synthetic sweeteners. Last but not least the paper includes a questionnaire for consumers, whose aim was to find out what influences the respondents while buying soft drinks and what is their attitude towards subsitute sweeteners.

Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-11-05T14:38:58Z No. of bitstreams: 1 JOSÉ CARLOS FERREIRA - TESE (PPGEP) 2011.pdf: 2583715 bytes, checksum: 354f3d59e0d3399d607fa4a93fbde40a (MD5) / Made available in DSpace on 2018-11-05T14:38:58Z (GMT). No. of bitstreams: 1 JOSÉ CARLOS FERREIRA - TESE (PPGEP) 2011.pdf: 2583715 bytes, checksum: 354f3d59e0d3399d607fa4a93fbde40a (MD5) Previous issue date: 2011-08-05 / Capes / O presente trabalho tem, como objetivo, propor um novo equipamento para obtenção do extrato de soja e desenvolver um novo produto alimentício elaborado com polpa de umbu, extrato de soja e rapadura, de alta qualidade protéica e energética, para suprir as carências nutritivas essenciais da população de baixa renda, principalmente para merenda escolar. O estudo foi dividido em quatro capítulos. No Capítulo 1 se avaliaram o processo de obtenção do extrato de soja com diferentes proporções de água:soja (1:8, 1:10 e 1:12), e o preparo da umbuzada com diferentes concentrações de polpa de umbu (30, 40 e 50%). Avaliaram-se também as características físico-químicas (proteínas, carboidratos, lipídios, pH, acidez total titulável, cinzas, teor de água e valor calórico), termofísicas (condutividades térmica, difusividade térmica, massa específica e calor específico), as propriedades sensoriais (cor, aroma e sabor) do extrato de soja, polpa de umbu e das formulações de umbuzada. No Capítulo 2 estudou-se o comportamento reológico (10, 20, 30 e 40 oC) do extrato de soja, da polpa de umbu e das formulações da umbuzada e se avaliou dentre os modelos de Ostwald-de-Waelle e Casson qual apresentava o comportamento reológico. No Capítulo 3 foram estudadas a cinética de congelamento e o efeito das condições de congelamento sobre as características físico-químicas, sensoriais e microbiológicas das formulações de umbuzada. Ademais, avaliaram-se as formulações da umbuzada em condições de armazenamento nas temperaturas de (-20 oC, a -170 oC até -50 oC em vapor de nitrogênio líquido e a -196 oC até - 50 oC por imersão em nitrogênio líquido). No Capítulo 4 estudou-se a cinética de secagem por liofilização das formulações de umbuzada congeladas em três condições (-20 oC e até -50 oC em vapor e por imersão em nitrogênio líquido) e se avaliou dentre os modelos de Cavalcanti Mata, Page e Midilli, qual representa o comportamento das curvas de secagem com precisão e se quantificou o efeito das temperaturas de congelamento e do percentual de polpa de umbu nas características físico-químicas e sensoriais da umbuzada liofilizada. Com base nos resultados obtidos verificou-se que o extrato de soja na proporção soja:água de 1:8 apresentou as melhores características físicoquímicas e sensoriais. A condutividade térmica e a difusividade térmica diminuem e a massa específica aumenta com a elevação da concentração de polpa de umbu. Os modelos de Ostwalt-de-waelle e Casson foram, de maneira geral, os que melhor representaram o comportamento reológico do extrato de soja, da polpa de umbu e das formulações nas temperaturas estudadas. O congelamento até -50 oC por imersão em nitrogênio líquido, apresentou o menor tempo de congelamento. A difusividade efetiva média aumentou de acordo com a ordem do método de congelamento apresentada: -20 oC, a 50 oC em vapor de nitrogênio e a 50 oC por imersão em nitrogênio líquido. A formulação com 50% de polpa de umbu apresentou a maior taxa de secagem por liofilização e o modelo de Cavalcanti Matta foi o que melhor representou o comportamento das curvas de secagem por liofilização. / The present work has the aim to propose a new device to get the soybean extract and develop a new food product made with umbu pulp, soymilk and brown sugar, highquality protein and energetic, to supply the main nutritional needs of low-income population, especially for school lunches. The study was divided into four chapters. In Chapter 1 we evaluated the process of obtaining the soybean extract with different proportions of water: soybean (1:8, 1:10 and 1:12), the preparation of umbuzada with different concentrations of umbu pulp (30, 40 and 50%). Still, we evaluated the physico-chemical characteristic (protein, carbohydrates, lipids, pH, total acidity, ash, moisture content and calorific value), thermophysical (thermal conductivity, thermal diffusivity, density and specific heat), the sensory properties (color aroma and flavor) of soymilk, umbu’s pulp, umbuzada’s formulations. In Chapter 2 we studied the Rheological behavior (10, 20, 30 and 40 °C) of the soymilk of umbu’s pulp and umbuzada’s formulations and it was evaluated from the model Ostwald-Waelle and Casson which represented the rheological behavior. In Chapter 3 we studied the freezing kinetics and the effect of freezing conditions on the physico-chemical characteristic, sensory and microbiological umbuzada’s formulations. Moreover, the formulations were evaluated in the umbuzada storage conditions at temperatures of (-20 °C, the -170 °C to -50 °C in nitrogen steam liquid and -196 °C to -50 °C by immersion in liquid nitrogen). In Chapter 4, we studied the kinetics of drying by lyophilization umbuzada’s formulations frozen in three conditions (-20 °C and -50 °C in steam and immersion in liquid nitrogen), they were evaluated from the models Cavalcanti Mata, Page and Midilli which represents the behavior of the drying curves with precision, and quantified the effect of freezing temperatures and the percentage of umbu’s pulp in physico-chemical and sensory umbuzada lyophilized. Based on the results obtained the soy extract in proportion soybean: water 1:8 showed better physico-chemical and sensory. The thermal conductivity and thermal diffusivity decreases and density increases with concentration increasing of umbu’s pulp. Models Ostwalt-of-Waelle and Casson were, in general, those which better represent the behavior rheology of the soy extract, the umbu’s formulations and temperatures studied. Freezing to -50 °C by immersion in liquid nitrogen had the lowest freezing time. The average effective diffusivity increased according to the order of presented freezing method: -20 °C to 50 °C in nitrogen steam and 50 °C by immersion in liquid nitrogen. The formulation with 50% umbu’s pulp show the highest rate of drying by lyophilization and Cavalcanti Mata model was the one that best represented the behavior of drying curves by lyophilization.