【摘要】 为了高效降解花生中黄曲霉毒素,研制了一套臭氧降解黄曲霉毒素的设备。以人为污染的花生为试验材料,利用此设备研究了臭氧处理时间及其相对湿度对花生脱毒效果的影响。研究结果表明:臭氧能有效降解花生中的黄曲霉毒素,且臭氧处理时间和相对湿度显著影响其降解效果(P<0.05)。在臭氧浓度89mg/L、流速1L/min、搅拌速度70r/min条件下,黄曲霉毒素的较佳降解工艺为:臭氧相对湿度50%,处理时间30min。在此条件下,花生中黄曲霉毒素B1、B2、G1和G2的含量分别从87.53、21.99、9.71和4.38μg/kg降低到15.23、8.31、2.81和2.11μg/kg,降解率分别为82.6%、62.2%、71.1%和51.8%。研究结果可为花生贮藏和加工企业降低花生中的黄曲霉毒素、确保花生食用安全性提供技术参考。更多还原

【Abstract】 In order to effectively degrade aflatoxins in peanuts, an equipment for detoxifying aflatoxins by ozone was designed. The effects of ozone treatment time and relative humidity on detoxification of aflatoxins in artificially contaminated peanuts were studied by using the designed equipment. The results showed that aflatoxins in peanuts could be degraded effectively by ozone, and exposure time and relative humidity of ozone could influence their degradation efficiency obviously (P<0.05). The better conditions for degrading aflatoxins in peanuts were that the relative humidity of ozone was 50% and the exposure time was 30 minutes at the ozone concentration 89 mg/L, flow rate of ozone 1 L/min, and stirring speed 70 r/min. Under the conditions, the contents of aflatoxin B 1 , B 2 , G 1 and G 2 in peanuts were decomposed from 87.53、21.99、9.71 and 4.38 μg/kg to 15.23、 8.31、2.81 and 2.11 μg/kg,respectively, and their degradation rates were 82.6%, 62.2%, 71.1% and 51.8%, respectively. The results provide technical references for peanut storage and processing enterprises to reduce aflatoxins in peanuts, and ensure the safety of peanuts to eat.更多还原