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Milk: An Alternative Beverage for Hydration?

Food and Nutrition Sciences 2015年第6期6卷 547-554页

作者： Cá ssia Pegoretti adriane elisabete costa antunes Fú lvia de Barros Manchado-Gobatto Caroline Dario Capitani Faculdade de Ciê ncias Aplicadas da Unicamp Rua Pedro Zaccaria Limeira Brazil

The hydration status of a physically active individual or athlete can influence his/her physical or mental performance. The degree of hypohydration may lead to serious health problems, and consequently to impair athletic performance. The consumption of water or carbohydrate-electrolyte beverages before, during and after exercise is essential to maintain fluid balance and prevent dehydration. Besides these drinks, research findings have pointed using bovine milk as an alternative to sports drinks to optimize hydration levels in athletes and physically active individuals. The nutritional composition of cow’s milk promotes post-exercise rehydration process, due to the natural presence of water and electrolytes such as sodium and potassium. Although most studies have confirmed that bovine milk is a viable alternative for rehydration, recent studies have not reported significant differences between milk and some sports drinks for hydration process. Thus, milk consumption could be used as an alternative beverage for the hydration process.

关键词： Milk Milk Proteins Athletic Performance Fluid Therapy Dehydration

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Whey Protein-Carboxymethylcellulose Obtained by Complex Coacervation as an Ingredient in Probiotic Fermented Milk

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Food and Nutrition Sciences 2015年第6期6卷 571-580页

作者： Maria Elisa Caetano-Silva Caroline Dá rio Capitani adriane elisabete costa antunes Erna Vougt Vera Sonia Nunes da Silva Maria Teresa Bertoldo Pacheco Faculty of Food Engineering University of Campinas Campinas Brazil School of Applied Sciences University of Campinas Limeira Brazil Food Science and Technology Institute Federal University of Rio Grande do Sul Porto Alegre Brazil Chemistry Center of Food and Applied Nutrition Institute of Food Technology (ITAL) Campinas Brazil

Discharge of whey proteins is still a current practice by small cheese producers. The development of low-cost alternatives for recovery of these proteins is fundamental for small producers who cannot apply expensive techniques. The present study investigated the complex coacervation technique as a cheap technology to recover proteins from sweet whey using carboxymethylcellulose, and the coacervate used as an ingredient in the formulation of probiotic fermented milk. The nutritional properties of whey-carboxymethylcellulose coacervates (WP-CMC) were evaluated in trials with animals (rats) using casein as a reference. All these parameters—the coefficient of feed efficiency (CEA), protein digestibility-corrected amino acid score (PDCAAS), and net protein ratio (NPR), as well as weight gain—were determined to evaluate protein quality. A sensory acceptance test was applied to evaluate the sensory characteristics of the product. The complex coacervation technique recovered 86% of the protein from sweet whey. No significant (p > 0.05) differences were observed in the biological tests for both groups (WP-CMC and Casein groups) when NPR (4.98 to 5.04), digestibility (92.35 to 90.64), and CEA (0.40 to 0.42) were evaluated. Probiotic fermented milk beverage containing WP-CMC (0.78%) and guar gum (0.68%) presented good acceptability as determined by sensory evaluation. WP-CMC can be considered an ingredient with high nutritional and biological value that could be applied in probiotic fermented milk as an alternative to small producers to allocate the residual whey from cheese manufacture.

关键词： Nutritional Value Whey Proteins Complex Coacervation Probiotic Fermented Milk Environmental Impact

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Effect of Adjunct Culture <i>Lactobacillus helveticus</i>(B02) on the Composition, Proteolysis, Free Amino Acids Release and Sensory Characteristics of Prato Cheese

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Food and Nutrition Sciences 2017年第5期8卷 512-525页

作者： Natália Chinellato de Azambuja Izildinha Moreno Darlila Aparecida Gallina Leila Maria Spadoti Eliana Maria Pettirossi Motta Maria Teresa Bertolodo Pacheco Angela Lima Menêses de Queiroz adriane elisabete costa antunes Faculdade de Ciências Aplicadas Universidade Estadual de Campinas (FCA/UNICAMP) Limeira Brazil Centro de Tecnologia de Laticínios Instituto de Tecnologia de Alimentos (TECNOLAT/ITAL) Campinas Brazil Faculdade de Engenharia de Alimentos Universidade Estadual de Campinas (FEA/UNICAMP) Campinas Brazil Centro de Ciência e Qualidade de Alimentos Instituto de Tecnologia de Alimentos (CCQA/ITAL) Campinas Brazil Centro de Tecnologia Universidade Federal da Paraíba Jo&#227o Pessoa Brazil

At semi-industrial scale it was obtained two cheeses, one with aromatic culture (CHN) and the other with also L. helveticus (CHN + LH). Proteolysis during ripening was evaluated using proteolytic indices, electrophoretic profile Urea-PAGE and release of free amino acids. Sensory evaluation was performed by acceptability test. It was observed a 5-fold increase in the fraction corresponding to αs1-I-casein in the CHN cheese and 6.5 times in the CHN + LH cheese and 7.2 and 8.2 increase respectively, for total amino acids. Prato cheese with the adjunct culture showed higher acceptability in terms of overall aroma and flavor.

关键词： Amino Acids Cheese L. helveticus Ripening Sensory Analysis

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