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  • Title: Technological aspects of lactose-hydrolyzed milk powder.
    Author: Torres JKF, Stephani R, Tavares GM, de Carvalho AF, Costa RGB, de Almeida CER, Almeida MR, de Oliveira LFC, Schuck P, Perrone ÍT.
    Journal: Food Res Int; 2017 Nov; 101():45-53. PubMed ID: 28941696.
    Abstract:
    Few reports describe the effect of lactose hydrolysis on the properties of milk powder during production and storage. Hence, the aim of this study was to evaluate the effects of five different levels of enzymatic lactose hydrolysis during the production and storage of milk powder. As the lactose hydrolysis rate increased, adhesion to the drying chamber also increased, due to higher levels of particle agglomeration. Additionally, more brown powder was obtained when the lactose hydrolysis rate was increased, which in turn negatively affected rehydration ability. Using Raman spectroscopy, crystallization of the lactose residues in various samples was assessed over 6weeks of accelerated aging at a room temperature environment with 75.5% of air moisture. Products with 25% or greater lactose hydrolysis showed no signs of crystallization, in contrast to the non-hydrolyzed sample.
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