2.7. The content of soymilk protein particleSoymilk was centrifuged at 156,000g for 30 min at 20 C.Protein concentrations of the whole soymilk and the supernatantafter centrifugation were measured by the Bradford (1976) method(Ono, Takeda, & Guo, 1996). The content of soymilk protein particlewas calculated using the following formula: % Content of proteinparticle = [(Protein concentration of whole soymilk proteinconcentration of the supernatant)/Protein concentration of wholesoymilk] 100%.