The production of protein foaming agent from baijiu vinasse

摘要

Baijiu vinasse was used as the protein source to produce protein foaming agent. The hydrolysis conditions were optimized. The results show that the optimal conditions are: for every 20 g of baijiu vinasse, 1 g CaO and 80 mL water are add, the reaction temperature is 80°C and reaction time is 2 h. Hydrolyzed twice under the optimal conditions, the protein extraction rate can reach 30.5%. After the hydrolyzation, supernatant was collected, neutralized and condensed to 3% protein content as protein foaming agent. Foam properties were determined by Ross-Miles meter. The foamability is 172 mm, and foam stability is 160 mm, which shows huge potential for application.