基于粉的生物塑料用重组酵母菌株单步转化为生物乙醇
Marthinus W Myburgh1, Leonardo Faggian2, Silvia Zanatta3
1Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch 7599, South Africa; Waste to Bioproducts-Lab, Department of Agronomy Food Natural resources Animals and Environment (DAFNAE), Padova University, Agripolis, Viale dell'Università 16, 35020 Legnaro, Padova, Italy; Urobo Biotech, 15 De Beer Street, Stellenbosch 7600, South Africa.
Bioresource technology
|September 20, 2025
概括
酶可以将粉生物塑料分解为糖,用于生产生物乙醇. 这项研究显示了一种具有成本效益的方法,将废弃生物塑料转化为有价值的乙醇燃料.
科学领域:
- 生物技术是生物技术.
- 生物精炼是生物精炼的一种方式.
- 可持续材料 可持续材料
背景情况:
- 基于粉的生物塑料在全球生产量很高.
- 目前的处置方法将它们转化为生物气和堆肥.
- 价值更高的产品可以从这些材料中获得.
研究的目的:
- 评估粉生物塑料的酶性水解.
- 发酵释放的糖分转化为生物乙醇.
- 评估废弃生物塑料回收利用的可行性.
主要方法:
- 选了各种酶,包括α-氨基酶和葡萄氨基酶.
- 使用一种类似于丁酶的酶 (rCLE1) 进行PBAT水解.
- 使用Saccharomyces cerevisiae发酵释放的糖.
主要成果:
- 阿尔法氨基酶比葡萄糖氨基酶更有效.
- 结合rCLE1和粉酶尾酒,产生了5.97g/L的总降解糖.
- 发酵产生了1.36g/L的乙醇,达到理论产量的88%.
结论:
- 酶性水解对粉生物塑料的分解是有效的.
- 生物乙醇可以从废弃的粉生物塑料中生产.
- 这个过程提供了一个可持续的价值化途径.
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