来自食用昆虫的Bacillus cytotoxicus是一种威胁吗?
Hooriyeh Mohammadpour1, Adiba Akram2, Martina Marcolin1
1Department of Comparative Biomedicine and Food Science, University of Padua, Viale Università 16, 35020 Legnaro, Pd, Italy.
International journal of food microbiology
|December 14, 2024
概括
一种新兴的食源性病原体Bacillus cytotoxicus在食用昆虫中表现出高耐热性和蛋白质分解活性. 基因组分析揭示了昆虫衍生的菌株的独特特征,突出了适应食物利基和潜在的食品安全风险.
科学领域:
- 食品微生物学 食品微生物学
- 基因组学就是基因组学.
- 食品安全 食品安全
背景情况:
- 细菌细胞毒性是一种新兴的食源性病原体,对蔬菜以外来源的菌株的研究有限.
- 可食用昆虫代表了一种新的食物来源,其中B. cytotoxicus尚未得到广泛研究.
研究的目的:
- 研究从食用昆虫中分离出来的B. cytotoxicus的基因组和表型特征.
- 将这些菌株与来自其他食物来源的菌株进行比较,以了解遗传联系,毒性概况 (VP) 和抗菌素耐药性 (AMR).
主要方法:
- 20种可食昆虫B. cytotoxicus菌株的全基因组测序和表型分析.
- 用44个公开可用的B. cytotoxicus基因组进行比较基因组分析.
主要成果:
- 来自昆虫的B. cytotoxicus菌株表现出显著的耐热性 (增长至60°C) 和蛋白质分解活性.
- 基因组分析显示,与昆虫相关的菌株中存在明显的VP和AMR概况,这表明它们适应了这种食物利基.
- 鉴定了分离物与潜在贸易路线之间的联系,表明了菌株的持久性和传播.
结论:
- 来自食用昆虫的B. cytotoxicus菌株具有独特的适应性,与与蔬菜相关的菌株不同.
- 这些子形成细菌的耐热性需要对食品安全进行仔细评估和工艺校准.
- 了解菌株的多样性和适应性对于管理B. cytotoxicus在食品供应中的新兴风险至关重要.
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