Soybean products are the source of phytochemicals with the range of nutritional benefits. Among many soybean products, tofu is one of the most popular soy food products in many countries. Tofu is not only rich in proteins and unsaturated fatty acids; it is also rich in range of isoflavones. Isoflavone, a group of phytoestrogen, reduces postmenopausal symptoms and the risk of osteoporosis of women. Glycosidic forms of isoflavones are presented in non-fermented soyfoods and they are less bioavailable than the aglycone isoflavones. Aglycone forms of isoflavones or more bioavailable forms can be increased by acid hydrolysis during tofu processing. The present study investigated the possibility of increasing the aglycone forms of isoflavones by acid hydrolysis. The authors used five types of tofu in this study: soybean tofu with hydrolysis, soybean meal tofu with hydrolysis, soybean tofu in general process, soybean meal tofu in general process...
Scientific Research Publishing