Effect of Water Activity on the Growth of Fusarium moniliforme NRRL 13569 and on the Fumonisin $B_1$ Production on Rough Rice

벼의 수분활성도가 Fusarium moniliforme NRRL 13569의 성장과 Fumonisin $B_1$ 생성에 미치는 영향

  • Published : 1995.02.01

Abstract

In the present study, an attempt was made to investigate the effect of water activity(Aw) of rough rice on the growth of Fusarium moniliforme NRRL 13569 as well as on the production of Fumonisin $B_1(FB_1)$. The maximum growth of F. moniliforme and the production of $FB_1$, occurred at Aw 0.97 when the Aw of rough rice was controlled from 0.85 to 0.97. The fungal growth and $FB_1$, production decreased with the decrease of Aw. Sparse growth of fungus was observed even at Aw 0.85. $FB_1$ production on rough rice decreased considerably under Aw 0.97 and the trace amounts of $FB_1$ were observed at Aw 0.93 and 0.90. Therefore Aw required for the prevention of $FB_1$ production was turn out to be below 0.90 while that of fungal growth below 0.85.

Keywords

water activity;fumonisin $B_1$;Fusarium moniliforme;rough rice