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16 results on '"Du, Zhaolin"'

5. Review on contaminants in edible oil and analytical technologies

Author

Liwen Qiang, Du Zhaolin, Yao Yanpo, Qin Li, An Yi, Huo Lili, Lin Dasong, Wang Wei, and Xia Qing

Subjects
Pesticide residues, lcsh:QH426-470, Waste management, Pesticide residue, Food industry, business.industry, Consumer health, Edible oil, Heavy metals, Mycotoxins, Contamination, Analytical method, lcsh:Genetics, Business
Abstract

Edible oil is an important part of the human daily diet, which is popular in the food industry. People are paying increasing attention to the safety of edible oil as flawed oils have caused enormous international losses and posed a huge threat to consumer health issues. Therefore, it is necessary and important to analyze the quality and safety of oil product. In the present study, we particularly reviewed recent literature on analysis of emerging pollutants in edible oil including mycotoxins, pesticide residues and heavy metals. In addition, a series of emerging analytical technologies (HPLC, LC-MS/MS and GC-MS) for these contaminants were also summarized in this paper.

Published
2021
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6. Screening, identification and antagonistic effect of antagonistic bacteria JTFM1001 against aflatoxin contamination in corn

Author

Du Zhaolin, Huo Lili, Jing Zhang, An Yi, Liwen Qiang, Qin Li, Yao Yanpo, Yu Wang, Lin Dasong, and Wang Wei

Subjects
Rhizosphere, Aflatoxin, Corn, lcsh:QH426-470, biology, food and beverages, Aspergillus flavus, Bacillus subtilis, Contamination, biology.organism_classification, Crop, lcsh:Genetics, Antagonistic bacteria, Antagonistic effect, Aflatoxin contamination, Corn oil, heterocyclic compounds, Food science, Bacteria
Abstract

Aflatoxin is a strong carcinogenic and toxic fungal toxin produced by Aspergillus flavus and other Aspergillus species, and can seriously threaten the health of consumers, thus becoming a global concern. Corn, as an important oil and economic crop, is highly susceptible contaminated by aflatoxin. In this study, antagonistic bacteria with strong inhibitory effect on aflatoxin were screened to provide support for the treatment aflatoxin contamination control in corn. Ten strains which have strong antagonistic effects against A. flavus were isolated from healthy corn from different corn producing areas in China. Among them, the antagonistic bacteria JTFM1001 through corn kernels in vivo and field experiment, the inhibition effect of aflatoxin contamination reached above 70% and 55%, respectively. And the strain was identified as Bacillus subtilis based on its morphological, physiological and biochemical characteristics and phylogenetic analysis of 16S rDNA. In addition, our data showed that it can colonize in the rhizosphere and survive for a long time, forming the dominant flora, with broad application prospect. Finally, we were surprised to find that the antibacterial metabolites secreted by the antagonistic bacteria was one of the mechanisms of its inhibition of A. flavus and aflatoxin. This will provide us with new ideas and perspectives on the effective prevention and control of aflatoxin contamination in corn and corn oil.

Published
2021
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