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Powdered fruit juices present problems of stikiness, solubility and hygroscopicity which are related to their high content of sugars in an amorphous state. This study aimed to induce crystallization in powdered tropical juices during the spray drying process and to correlate the microstructure of the powder obtained with the functional properties of stickiness, hygroscopicity and solubility. For this work, mango juice with 12ºBrix was used. Before dehydrating the juice, the following carriers were added: maltodextrin, gum arabic, waxy starch and cornstarch, at concentrations of 12%.…mehr

Produktbeschreibung
Powdered fruit juices present problems of stikiness, solubility and hygroscopicity which are related to their high content of sugars in an amorphous state. This study aimed to induce crystallization in powdered tropical juices during the spray drying process and to correlate the microstructure of the powder obtained with the functional properties of stickiness, hygroscopicity and solubility. For this work, mango juice with 12ºBrix was used. Before dehydrating the juice, the following carriers were added: maltodextrin, gum arabic, waxy starch and cornstarch, at concentrations of 12%. Crystalline cellulose was also added to the solution at concentrations of 0%, 3%, 6% and 9%. The powder was obtained using a mini spray dryer. The powder obtained was analyzed for microstructure, stickiness, solubility and hygroscopicity. The results indicate that mango juice powders obtained by spray drying have sugars in an amorphous state. The functional properties studied decreased as a function of cellulose concentration. It can be concluded that the addition of cellulose did not promote the crystallization of sugars, but it did influence the functional properties.
Autorenporträt
Milton Nobel Cano Chauca has a degree in Food Engineering, a Master's degree in Food Science and Technology (UFV) and a PhD in Food Science (UFLA). He is currently a Professor at the Institute of Agrarian Sciences of the Federal University of Minas Gerais in the area of Fruit and Vegetable Processing.