Early warning of AFB₁ contamination in stored maize by monitoring catalase activity

Authors

ZHANG Yaolei, College of Bioengineering, Henan University of Technology, Zhengzhou, Henan 450001, China
ZHAI Huanchen, College of Bioengineering, Henan University of Technology, Zhengzhou, Henan 450001, China
ZHANG Shuaibing, College of Bioengineering, Henan University of Technology, Zhengzhou, Henan 450001, China
CAI Jingping, College of Bioengineering, Henan University of Technology, Zhengzhou, Henan 450001, China

Abstract

The early warning is significant forpreventing stored maize from aflatoxin B₁ (AFB₁) contamination. To reveal the relationship between the change of catalase activity and AFB₁ contamination in stored maize, the storage experiments of maize were carried out at different temperatures and moisture contents. The results showed the increasing trend of catalase activity and contaminated AFB₁ was accordant, which displayed a quadratic equation with the correlation coefficient of more than 0.95. The rates of catalase activity increase and AFB₁ production by mould in maize could be affected by storage temperature and maize moisture content, but their increasing trend was not changed. Moreover, it was found that catalase activity increase 4 to 21 days before the significant increase of AFB₁ content under each maize storage condition. Therefore, the early warning of AFB₁ contamination in stored maize could be achieved by the detection of catalase activity of mould in stored maize.

Publication Date

1-28-2017

First Page

110

Last Page

113,121

DOI

10.13652/j.issn.1003-5788.2017.01.026

Recommended Citation

Yaolei, ZHANG; Huanchen, ZHAI; Shuaibing, ZHANG; and Jingping, CAI (2017) "Early warning of AFB₁ contamination in stored maize by monitoring catalase activity," Food and Machinery: Vol. 33: Iss. 1, Article 26.
DOI: 10.13652/j.issn.1003-5788.2017.01.026
Available at: https://www.ifoodmm.cn/journal/vol33/iss1/26

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