Bosly Hanan AbuAlQasem, Kawanna Maha Adel
1Department of Biology, Faculty of Science, Jazan University, Jazan, Saudi Arabia.
Toxicol Ind Health. 2014 May;30(4):304-10. doi: 10.1177/0748233712457449. Epub 2012 Aug 17.
Infection of stored wheat flour with insects and toxic fungi can be an extremely serious problem. This study was conducted to isolate and identify the fungal species and insects in different stages, which infested and contaminated the stored flour under Jazan region conditions and changed its color and flavor. The obtained results revealed that the isolated insect was the red flour beetle Tribolium castaneum. Live adult, larvae and cast skin were isolated. Four Aspergillus species were isolated from stored wheat flour; the isolated species prevalence being A. flavus > A. niveus > A. terreus > A. niger by rate 44.5%, 37.8%, 10.9% and 6.7%, respectively. The same fungal species isolated from flour were also isolated from different insect stages. A. flavus was the most common fungus and A. niger was isolated with a lower rate. The results about the isolated fungi either from the suspension of adult insects, larvae or cast skins may confirm the role of T. castaneum to carry and distribute fungi in different parts of the stored flour.
储存的小麦粉受到昆虫和有毒真菌的感染可能是一个极其严重的问题。本研究旨在分离和鉴定在吉赞地区条件下侵染和污染储存面粉、并改变其颜色和风味的不同阶段的真菌种类和昆虫。所得结果表明，分离出的昆虫是赤拟谷盗。分离出了活的成虫、幼虫和蜕的皮。从小麦储存面粉中分离出了四种曲霉菌；分离出的菌种流行率依次为黄曲霉＞雪曲霉＞土曲霉＞黑曲霉，分别为44.5%、37.8%、10.9%和6.7%。从小麦粉中分离出的相同真菌种类也从不同昆虫阶段分离得到。黄曲霉是最常见的真菌，黑曲霉的分离率较低。从成虫、幼虫或蜕的皮的悬浮液中分离出的真菌结果可能证实了赤拟谷盗在储存面粉不同部位携带和传播真菌的作用。
