Volatiles from Pseudomonas palleroniana Strain B-BH16-1 Suppress Aflatoxin Production and Growth of Aspergillus flavu s on Coix lacryma-jobi during Storage

Semen coicis is not only a traditional Chinese medicine (TCM), but also a typical food in China, with significant medical and healthcare value. Because semen coicis is rich in starch and oil, it can be easily contaminated with and its aflatoxins (AFs). Preventing and controlling the contamination of...

Full description

Saved in:
Bibliographic Details
Published in:Toxins 2023-01, Vol.15 (1)
Main Authors: Zhou, Shihua, Yuan, Qing-Song, Wang, Xiaoai, Jiang, Weike, Ou, Xiaohong, Yang, Changgui, Gao, Yanping, Wang, Yanhong, Guo, Lanping, Huang, Luqi, Zhou, Tao
Format: Article
Language:English
Subjects:
Aflatoxins - analysis
Aspergillus
Aspergillus flavus
Coix
Pseudomonas
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Semen coicis is not only a traditional Chinese medicine (TCM), but also a typical food in China, with significant medical and healthcare value. Because semen coicis is rich in starch and oil, it can be easily contaminated with and its aflatoxins (AFs). Preventing and controlling the contamination of semen coicis with and its aflatoxins is vital to ensuring its safety as a drug and as a food. In this study, the endosphere bacteria strain B-BH16-1 produced volatiles that strongly inhibited the mycelial growth and spore formation activity of . Gas chromatography-mass spectrometry profiling revealed three volatiles emitted from B-BH16-1, of which 1-undecene was the most abundant. We obtained authentic reference standards for these three volatiles; these significantly reduced mycelial growth and sporulation in , with dimethyl disulfide showing the most robust inhibitory activity. Strain B-BH16-1 was able to completely inhibit the biosynthesis of aflatoxins in semen coicis samples during storage by emitting volatile bioactive components. The microscope revealed severely damaged mycelia and a complete lack of sporulation. This newly identified plant endophyte bacterium was able to strongly inhibit the sporulation and growth of and the synthesis of associated mycotoxins, thus not only providing valuable information regarding an efficient potential strategy for the prevention of contamination in TCM and food, but potentially also serving as a reference in the control of toxic fungi.
ISSN:2072-6651