On the Bacteria Isolated from the Spoiled Packaged "Mochi" Rice Cake

Abstract

Two species of bacteria were isolated from packaged spoiled rice cake. According to the various properties of the isolated bacteria, one was determined to be Bac. coagulans and the other Bac. Subtilis. Both exist originally in un-polished rice. The spores of Bac. Coagulans were destroyed by heating at 105°C for 35min, 110°C for 10min, 115°C for 1-2min. In the case of Bac. Subtiltis, the thermotolerance was 115°C for 35min, 120°C for 9min and 125°C for 2min, respectively.