Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/6463
Título: Ensaios de fabrico de queijo fresco com teor reduzido de lactose
Autor: Ribeiro, Cátia Vanessa Carvalho
Orientador: Martins, António Pedro Louro
Pavoeiro, Pedro
Palavras-chave: lactose
lactose intolerance
beta-galactosidase
enzymatic hydrolysis
fresh cheese
Data de Defesa: 2013
Editora: ISA
Citação: Ribeiro, C.V.C. - Ensaios de fabrico de queijo fresco com teor reduzido de lactose. Lisboa: ISA, 2013,
Resumo: It can be stated that one third of Portugal’s population suffer of lactose intolerance. The main objective of this study was the development of a new product in our market, originated in Portugal, low lactose fresh cheese. Were tested various enzymatic hydrolysis methodologies, in order to know what is the enzyme’s actuation time on milk or cheese required to hydrolyze the biggest lactose content. The enzyme was added 3 and 18 hours at 6C and 1 hour at 30C, before the beginning of manufacture, and, added at the time of addition of the remaining ingredients, during cheese manufacture. Have also been developed assays with the addition of different amounts of salt, to minimize the predictable effects of lactose hydrolysis, like the increase of sweetness. After 3-4 days of conservation, was achieved a degree of lactose hydrolysis above 90% (93- 97%). Upon reaching concentrations levels less than 0,5g of lactose per 100g of cheese (0,5%, m/m), the product may be considered as low lactose fresh cheese. The different methodologies of manufacture didn’t affect the positive opinion of the tasters, during the sensory evaluation.
Descrição: Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/6463
Aparece nas colecções:BISA - Dissertações de Mestrado / Master Thesis



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