微塑料与反动物生态系统的相互作用 in vitro
J Eichinger1, J Seifert2, J S Sáenz2
1Technical University of Munich, Chair of Animal Nutrition, TUM School of Life Sciences, Freising, Bavaria, Germany; Ruminant Nutrition and Emissions, Agroscope, Posieux, Switzerland.
Journal of hazardous materials
|November 20, 2025
概括
农场动物在料中摄入微塑料 (MP),影响它们的小肠微生物群. 这项研究发现,MPs改变了小肠的微生物功能,并被部分降解,引发了食品安全问题.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 动物科学动物科学
背景情况:
- 管理不善的塑料废物导致环境中的微塑料 (MP) 污染.
- 农场动物越来越多地通过受污染的料接触到MP.
- 人们还不太了解MPs与肠微生物组之间的相互作用.
研究的目的:
- 为了研究各种微塑料和肠微生物群之间的体外相互作用.
- 评估不同类型,大小和剂量的MP对肠发酵和微生物活性的影响.
主要方法:
- 利用霍亨海姆气体试验在体外化五种MP化学物种,分为两个粒子大小类别和六剂量.
- 化过程中使用液和花草或大麦进行了化.
- 分析了累积的气体产量,pH值,干物质消失,挥发性脂肪酸,甲型蛋白质组学和代谢学.
主要成果:
- 微塑料始终减少了累积的气体产量,无论聚合物类型,颗粒大小或剂量如何.
- 总干物质降解因MP暴露而增强,取决于剂量.
- 甲蛋白组学揭示了微生物群落 (从Bacteroidetes到Firmicutes) 的转变,并改变了大麦化中的蛋白质丰度.
结论:
- 体微生物与微塑料相互作用并部分降解.
- 皮中MP逐渐减少的大小可能导致转移到动物组织中.
- 进一步的体内研究对于了解动物健康和食品安全的影响至关重要.
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