传统塑料消费品与可堆肥塑料消费品的比较毒性:一个体外评估
Tiantian Wang1, Mahboubeh Hosseinzadeh2, Alice Cuccagna1
1Environmental Chemistry Department, IDAEA -CSIC, C/ Jordi Girona, 18-26, Barcelona 08034, Spain.
Journal of hazardous materials
|July 27, 2023
概括
可生物降解塑料 (BPs) 在细胞测试中显示出显著的毒性,光降解和堆肥加剧了这种毒性. 传统的塑料,特别是回收塑料,也含有有害化合物,强调需要仔细的材料评估.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 材料科学 材料科学 材料科学
背景情况:
- 传统的塑料对环境构成风险.
- 可生物降解塑料 (BPs) 是新兴的替代品.
- 了解塑料的毒性,包括BP,至关重要.
研究的目的:
- 研究可生物降解塑料 (BPs) 和常规塑料 (原始和回收) 中的甲醇提取物的毒性.
- 评估光降解和堆肥对这些塑料提取物的毒性的影响.
- 评估这些提取物对细胞活力,EROD活性和PLHC-1细胞中微核形成的影响.
主要方法:
- 从处女,回收和可堆肥塑料中制备甲醇提取物.
- 暴露PLHC-1细胞的塑料提取物.
- 通过使用标准测定来评估细胞活力.
- 测量7-埃托克西瑞索芬-O-脱乙酶 (EROD) 的活性.
- 通过微核形成试验评估基因毒性.
主要成果:
- 可生物降解的塑料提取物在PLHC-1细胞中显著降低了细胞活力 (<70%).
- 光降解和堆肥增强了可生物降解塑料提取物的毒性.
- 传统的塑料提取物,特别是回收的塑料提取物,诱导了EROD活动和微核形成.
- 降解过程放大了传统塑料提取物中CYP1A诱导剂和基因毒性化合物的存在.
结论:
- 可生物降解塑料可能表现出显著的毒性,这种毒性因光降解和堆肥等环境降解过程而加剧.
- 传统和回收塑料含有诱导CYP1A的化合物,具有基因毒性,光降解后毒性增加.
- 进一步研究可生物降解塑料的成分和降解对毒性的影响对于安全的材料开发和使用至关重要.
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