Detoxification of aflatoxin in corn flour by ozone
Detoxification of aflatoxin in corn flour by ozone
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臭氧脱毒玉米粉中黄曲霉毒素
DOI：
10.1002/jsfa.6550
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发表时间：
2014-08-01
影响因子：
4.1
通讯作者：
Chen, Zhengxing
中科院分区：
文献类型：
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作者：
Luo, Xiaohu;Wang, Ren;Chen, Zhengxing
背景：玉米是全球最重要的农产品之一，在许多地区容易受到黄曲霉毒素（AFs）污染，严重危害人类健康并威胁经济增长。本研究评价了臭氧对玉米粉（CF）及其水分含量（MC）中AFs解毒的影响。结果：随着臭氧浓度和暴露时间的增加，臭氧对CF的解毒作用变得更加明显。 CF经75 mg·L-1臭氧处理60 min后,AFB(1)、AFG(1)和AFB(2)含量分别从53.60、12.08和2.42 μg kg(-1)下降到11.38、3.37和0.71 μg kg(-1),均低于AFB(1)的上限。 AFG(1)、AFB(2) 以及中国政府规定的CF的总AF（20μg kg(-1)）。臭氧化显着影响CF的MC，并且较高浓度的臭氧使MC降低得更剧烈。 CF在15、30、45和75 mg L-1臭氧中暴露60 min后，CF的MC从17.4%下降到15%以下，满足CF的长期储存要求。结论：臭氧可有效降解CF中的AFs，大大降低CF的MC。 (C) 2013年化学工业学会
BACKGROUND: Corn, which is one of most important agricultural products worldwide, is prone to pollution by aflatoxins (AFs) in many areas, thus seriously jeopardizing human health and threatening economic growth. This study evaluated the effects of ozone on the detoxification of AFs in corn flour (CF) and the moisture content (MC) thereof.RESULTS: The detoxifying effects of ozone on CF became more obvious as the ozone concentration and exposure time increased. After CF was treated with 75 mg L-1 ozone for 60 min, the contents of AFB(1), AFG(1) and AFB(2) decreased from 53.60, 12.08 and 2.42 mu g kg(-1) to 11.38, 3.37 and 0.71 mu g kg(-1), respectively, which are lower than the maximum limits of AFB(1), AFG(1), AFB(2) and total AFs (20 mu g kg(-1)) for CF regulated by the Chinese government. Ozonation significantly affected the MC of CF, and ozone at a higher concentration decreased the MC more drastically. After CF was exposed to 15, 30, 45 and 75 mg L-1 ozone for 60 min, the MC of CF decreased from 17.4% to below 15%, fulfilling the long-period storage requirements for CF.CONCLUSION: Ozone is potentially applicable in effectively degrading the AFs in CF and in greatly decreasing the MC of CF. (C) 2013 Society of Chemical Industry