Efeito de colágeno hidrolisado sobre a qualidade tecnológica de queijo Minas frescal light
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Data
2011-09-30
Autores
Silva, Tatiane Ferreira da [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O queijo Minas Frescal é um produto tipicamente brasileiro, com ampla aceitação comercial, que faz parte dos hábitos alimentares da população, sendo um dos queijos mais produzidos do país. Este produto apresenta consistência branda e macia, é nutritivo por ser fonte de proteína, rico em cálcio e outros nutrientes. É classificado como um queijo semi-gordo e de muita alta umidade (não inferior a 55%). Porém, atualmente os consumidores buscam alimentos com menores teores de gordura, e consequentemente menor valor calórico, sem alterações no sabor em comparação aos produtos integrais. A gordura é considerada um importante constituinte no aspecto sensorial dos alimentos, contribuindo para o sabor, cremosidade, aparência, odor e sensação de saciedade, além de outros atributos sensoriais e de textura, como maciez e suculência. Portanto, queijos com baixo teor de gordura apresentam menor rendimento, textura mais dura e problemas de acidez e gosto amargo. Algumas melhorias tecnológicas têm sido desenvolvidas para melhorar a qualidade dos queijos: alterações no processo de fabricação, ultrafiltração do leite, uso de culturas adjuntas, adição de enzimas e uso de substitutos de gordura. Neste trabalho o objetivo foi estudar o efeito da adição de colágeno hidrolisado sobre a qualidade tecnológica do queijo Minas frescal com reduzido teor de gordura. Foram feitos dois processamentos conforme três tratamentos: queijo elaborado com leite integral (I), queijo elaborado com leite padronizado a 1,5% de gordura e adicionado de 0,5% de colágeno hidrolisado (M) e queijo elaborado com leite padronizado a 1,5% de gordura (L). Após a produção foi determinada a composição centesimal. A acidez titulável, a sinérese, o perfil eletroforético da caseína e de textura...
Minas fresh cheese is typically Brazilian and it is one of the most produced cheeses in the country. This product has a wide commercial acceptance and is part of the regular diet of consumers. Its consistency is soft and mild and it is a rich source of protein, calcium and other nutrients. This cheese is classified as semi-fat and has a very high humidity (not less than 55%). However, nowadays consumers are demanding foods with a low fat content and as a consequence with a low calorie value and without changes in flavor when compared to full fat products. Fat is considered an important constituent in the sensory aspect of food, contributing to the flavor, creamy texture, appearance, smell and satiety, and also to other sensorial and textural attributes such as softness and succulence. Therefore, cheeses with a low fat content have a lower yield, harder texture and problems of acidity and a bitter taste. Some technological improvements have been developed in order to improve the cheese quality: changes in the manufacturing process, ultrafiltration of milk, use of adjunct cultures, addition of enzymes and the use of fat substitutes. The objective of this work was to study the effect of the addition of hydrolysate collagen on the technological quality of Minas fresh cheese with a reduced fat content. Two processes were prepared according to three types of treatment: cheese made with full fat content milk (I), cheese made from milk standardized to 1.5% fat and supplemented with 0.5% of hydrolysate collagen (M) and cheese made from milk standardized to 1.5% fat (L). The chemical composition was determined after the production of the cheeses. The acidity, syneresis, electrophoretic profile of casein, texture profile and sensory parameters... (Complete abstract click electronic access below)
Minas fresh cheese is typically Brazilian and it is one of the most produced cheeses in the country. This product has a wide commercial acceptance and is part of the regular diet of consumers. Its consistency is soft and mild and it is a rich source of protein, calcium and other nutrients. This cheese is classified as semi-fat and has a very high humidity (not less than 55%). However, nowadays consumers are demanding foods with a low fat content and as a consequence with a low calorie value and without changes in flavor when compared to full fat products. Fat is considered an important constituent in the sensory aspect of food, contributing to the flavor, creamy texture, appearance, smell and satiety, and also to other sensorial and textural attributes such as softness and succulence. Therefore, cheeses with a low fat content have a lower yield, harder texture and problems of acidity and a bitter taste. Some technological improvements have been developed in order to improve the cheese quality: changes in the manufacturing process, ultrafiltration of milk, use of adjunct cultures, addition of enzymes and the use of fat substitutes. The objective of this work was to study the effect of the addition of hydrolysate collagen on the technological quality of Minas fresh cheese with a reduced fat content. Two processes were prepared according to three types of treatment: cheese made with full fat content milk (I), cheese made from milk standardized to 1.5% fat and supplemented with 0.5% of hydrolysate collagen (M) and cheese made from milk standardized to 1.5% fat (L). The chemical composition was determined after the production of the cheeses. The acidity, syneresis, electrophoretic profile of casein, texture profile and sensory parameters... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Tecnologia de alimentos, Queijo - Industria, Queijo - Inovações tecnológicas
Como citar
SILVA, Tatiane Ferreira da. Efeito de colágeno hidrolisado sobre a qualidade tecnológica de queijo Minas frescal light. 2011. 65 f. Dissertação (mestrado) - Universidade Estadual Paulista, Instituto de Biociências, Letras e Ciências Exatas, 2011.