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ABSTRACT

Soy-cheese whey curd was prepared by mixing soymilk and cheese whey with the addition of glucono-delta-lactone (GDL) to coagulate the proteins. Three soymilk concentrations, 6:1, 8:1 and 10:1 (water:bean, v/w), and four cheese whey levels, 3%, 4.5%, 5.25% and 6% (w/v), were used. Heating the GDL treated soy-cheese whey milk in a hot water bath at 85°C for 25 min consistently produced a smooth and compact. curd without syneresis. Textural properties of the curd were tested by an Instron machine. Five parameters-stiffness, bioyield point, firmness, relaxation and plasticity—were determined. Among these, only stiffness and firmness could be used as the textural parameters for the curd.