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生物增量影响PBAT在堆肥过程中的生物降解模式,通过塑圈社区和表面性质的相关变化

Guangyu Cui¹, Xiaoyi Wu¹, Xuyang Lei²

¹Shenzhen Engineering Laboratory for Eco-efficient Recycled Materials, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China.

Bioresource technology

|December 14, 2025

概括

添加特定的微生物显著提高了聚乙烯基酸盐-联合甲酸盐 (PBAT) 生物塑料的堆肥. 这通过改变塑球微生物群和聚合物结构来增强生物降解.

科学领域:

环境微生物学环境微生物学
聚合物科学聚合物科学
生物技术是生物技术.

背景情况:

塑料圈微生物组在堆肥过程中生物塑料生物降解中的作用至关重要,但尚未完全理解.
聚乙烯基酸盐-联合甲酸盐 (PBAT) 是一种常见的可生物降解塑料,其堆肥效率需要优化.

研究的目的:

通过在堆肥条件下检查表面变化和微生物群落转移来研究PBAT的生物降解.
评估注射剂修改对PBAT降解和塑球微生物继承的影响.

主要方法:

模拟PBAT的工业有氧堆肥.
表面的物理化学特性 (例如,水接触角度,FTIR光谱学).
高通量微生物16SrRNA基因测序.
凝透色谱 (GPC) 用于分子量分析.

主要成果:

与对照组 (3.2%) 相比,注射剂修改显著增加了PBAT碳损失 (12.7%).
PBAT经历了脱聚合,由分子量 (Mz) 的降低和加速的键水解证明.
微生物分析显示,热友性种群的阿尔法多样性增加和丰富,不同的水解和氧化属主导着不同的堆肥阶段.

结论:

添加注射剂有效地通过重组塑微生物群来增强PBAT生物降解.
堆肥涉及阶段依赖的微生物贡献,影响PBAT脱聚合和表面修饰.
这些发现为了解生物聚合物-微生物相互作用和优化注射剂辅助生物塑料堆肥提供了一个框架.

关键词:

有氧堆肥是一种有氧堆肥.生物塑料是生物塑料.食物浪费食物浪费食物浪费微生物的注射是微生物的注射.塑性球是指塑性球.

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