Impact of feed type, environmental conditions, and pesticide usage on the growth and aflatoxin production by Aspergillus parasiticus during feed storage

IF 2.7 2区农林科学 Q1 ENTOMOLOGY

Journal of Stored Products Research Pub Date : 2025-02-26 DOI:10.1016/j.jspr.2025.102599

Jing Gao , Qi Guo , Jun Zhang , Jiahui Li , Peiya Wang

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引用次数: 0

Abstract

The co-occurrence of AFB₁, AFB₂, AFG₁, and AFG₂ in mold-contaminated feed suggests a significant contribution of A. parasiticus to aflatoxin contamination in feed. In contrast to A. flavus, research on the effects of A. parasiticus growth and aflatoxin production is limited. This study aims to investigate the factors influencing the growth and aflatoxin production by A. parasiticus, as well as to analyze the interactions among these factors utilizing response surface methodology. The results will be compared with relevant studies on A. flavus, ultimately contributing to the development of a comprehensive strategy for the prevention of aflatoxin contamination. The findings indicated that both A. parasiticus and A. flavus used sugar as an initial substrate to produce aflatoxins. The substrate preference of A. parasiticus was not changed due to differences in nutrient content in different feeds. The mineral Mn was found to suppress aflatoxin production by both fungi, whereas glucose, sucrose, and Zn stimulated production. Temperature and water activity levels effective against A. flavus may not be equally effective for A. parasiticus. The optimum storage conditions were for temperature and water activity below 10 °C and 0.85 at the same time. Although chemical pesticides may comply with regulatory limits in feed, certain pesticides and their interactions could increase the risk of aflatoxin contamination during feed storage. Hence, a comprehensive evaluation of factors influencing both fungi is imperative to prevent aflatoxin contamination effectively.

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来源期刊

Journal of Stored Products Research 生物-昆虫学

CiteScore

5.70

自引率

18.50%

发文量

112

审稿时长

45 days

期刊介绍： The Journal of Stored Products Research provides an international medium for the publication of both reviews and original results from laboratory and field studies on the preservation and safety of stored products, notably food stocks, covering storage-related problems from the producer through the supply chain to the consumer. Stored products are characterised by having relatively low moisture content and include raw and semi-processed foods, animal feedstuffs, and a range of other durable items, including materials such as clothing or museum artefacts.