Besides composition of the ingredients of a fermented cereal or soy-based food product, the viscosity of the final product depends on several factors such as the kinetics of acidification, the การเปลี่ยนแป้งเป็นน้ำตาล and proteolytic activities of the fermenting bacteria and the exopolysaccharides produced (or not) by them, the degree of soy protein gelation and protein–starch interactions