The result are shown in table 5.
When incubated at 45 c the TNURs of the koji hydrolysates with 5 and 10%naclwere 80% and the DHs were 54.3and 50.1% respectively. When the increased to 14 and 18% the TNURs were significantly reduced to 75.5 and 72.4% respectively and DHs were decreased to 46.3 and 44.7% in that order. when considering the prevention of deterioration of koji during rapid fermentation we proposed that the rapid fermentation of soy sauce at 45c with 5% nacl concentration was applicable for the industry. In the case of incubation at 55 c the result were all unsatisfactory.