次氯酸钠对花生饼中黄曲霉毒素去毒效果的研究

DETOXIFICATION OF AFLATOXIN IN GROUNDNUT CAKE WITH SODIUM HYPOCHLORITE

把自然条件下产生黄曲霉毒素的花生饼作化学去毒处理，使用的脱毒剂为次氯酸钠，次氯酸钠用量分别为０．２５％、０．５０％和１００％，处理时间分别是２４、４８和７２ｈ。试验结果表明，次氯酸钠是一种有效的黄曲霉毒素脱毒剂，添加０．２５％次氯酸钠处理含有黄曲酶毒素的花生饼２４、４８和７２ｈ，分别使黄曲霉毒素总量减少９３．３２％、９５．５１％和９６．２７％；而添加１００％次氯酸钠处理不同时间的，则分别使毒素量下降９４．８２％、９３．８２％和９６．６５％。在本试验条件下。

Aflatoxin contaminated groundnut cake ( GNC) was treated with sodium hypochlorite for detoxification.The treatment was at 0.25%,0.50% and 1.0% levels and samples stored at 25% moisture level and ambient temperature in sealed polyethylene bags. The durations of treatment was 24, 48 and 72 hours.The present experiment showed that sodium hypochlorite is an effective reagents for destroying aflatoxin in GNC. Both the level of chemical and treatment time were not important factors for detoxification in this trial and there were no significant difference between the different level of chemical and duration of treatment ( P >0.05). The treatment with 0.25 % sodium hypochlorite for 24,48 and 72 hours could reduce aflatoxin by 93.32%, 95.51% and 96.27% respectively.The destruction of aflatoxin in GNC was 94.82%, 93.82% and 96.65% for 1.00% of sodium hypochlorite treatment for the three treatment duration respectively.