STUDIES ON COAGULATION PROCESS OF SOYMILK IN TOFU AND KORI-TOFU MANUFACTURE .7. PARTICLE-SIZE DISTRIBUTION OF SOYMILK ANALYZED BY A LASER-BEAM PARTICLE ANALYZER

A laser beam particle analyzer was applied to measurement of soymilk p article size distribution. The distribution of particle size in soymil k was composed of two parts in a range of 1 approximately 100 mum ; a sharp peak below 1 mum and a broad peak around 10 mum. The total parti cle counts of soymilk increased linearly with an increase in concentra tion of soymilk at the concentration level between 0.1 and 5%. Therefo re, the total particle counts of soymilk were applicable to estimate t he concentration of soymilk. By comparing the total counts of soymilk with those of denatured protein solutions prepared from defatted soybe an meal, about 15% of the total counts of soymilk was attributed to he at-denaturation process of protein and the remaining counts to the emu lsifying process with lipid. The up-and-down temperature shift affecte d the counts and the size of soymilk particles.