Abstract

Mold grew in the existence of n-propyl-p-hydroxybenzoate at the concentration of ca. 0.001%, 0.003%, 0.005%, and 0.007% respectively after 4, 5, 6, and 8 days, but ca. 0.005% of thymol, 0.003% of p-chlorothymol, and 0.001% of o-chloro-p-thymolinaldehyde inhibited the growth of mold during 30 days experimental period. These results showed that, thymol group compounds had a strong antiseptic action against mold in soy bean sauce. The experiment of urea, thiourea had not antiseptic power in the concentration of 0.01%.

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