相关实验视频

Updated: Jun 9, 2025

Production of Chemicals by Klebsiella pneumoniae Using Bamboo Hydrolysate as Feedstock

Production of Chemicals by Klebsiella pneumoniae Using Bamboo Hydrolysate as Feedstock

Published on: June 29, 2017

使用各种废碳来源的细菌生产聚酸酸 (PHAs)

Aansa Naseem¹, Ijaz Rasul¹, Zulfiqar Ali Raza²

¹Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Punjab, Pakistan.

|October 28, 2024

概括

这项研究探讨了可生物降解塑料聚酸酸盐 (PHAs) 的经济高效生产,使用废弃碳来源,如大米和甘糖蜜. 甘糖蜜从细菌菌株中产生了最高的PHA产量,为合成塑料提供了可持续的替代品.

科学领域:

生物技术和微生物工程
聚合物科学和材料工程聚合物科学和材料工程
环境科学与可持续发展

背景情况:

由于其非生物降解性质,合成塑料带来了环境挑战.
生物降解塑料,如多基酸 (PHAs),提供了一个可持续的替代品.
PHA的高生产成本与昂贵的碳基板有关.

研究的目的:

调查使用废碳来源的PHA的成本效益生产.
为了评估使用大米和甘糖蜜的不同细菌菌株的PHA产量.
优化PHA生物合成条件,以提高产量和效率.

主要方法:

培养细菌菌株 (Bacillus subtilis,Bacillus cereus,Alcaligenes sp.,Pseudomonas aeruginosa),使用大米和甘糖蜜作为碳来源.
使用苏丹黑B染料选PHA生产.
量化PHA产量,细胞干质量 (CDM) 和PHA含量.
生物聚合物特性使用福里埃变换红外光谱 (FTIR) 和差分扫描热量计 (DSC) 的分析.

主要成果:

Pseudomonas aeruginosa 在米和 (95%) 甘糖蜜中获得了最高的PHA产量 (93.7%).
在所有测试的细菌菌株中,与大米相比,甘糖蜜产生了最大的PHA产量.
最佳的潜伏时间因细菌菌株而异,B. subtilis和B. cereus的最佳潜伏时间为24-48小时,Alcaligenes sp.的最佳潜伏时间为48-96小时. 和P. aeruginosa. 这两种类型.
FTIR和DSC分析证实了产生的聚3-基酸盐 (P(3HB)) 的同一性和热稳定性.

结论:

废碳来源,特别是甘糖蜜,可以有效地用于具有成本效益的PHA生产.
特定的细菌菌株,如P. aeruginosa和Alcaligenes sp.,显示出工业规模PHA生物合成的高潜力.
这项研究支持开发可持续和可生物降解的塑料替代品,减轻环境污染.

关键词:

细菌细菌是一种细菌.生物降解生物降解生物塑料是生物塑料.生物聚合物是一种生物聚合物.美国国家安全委员会 DSC.美国的FTIR是FTIR.塑料塑料是一种塑料.聚酸酸多基甲酸

更多相关视频

Author Spotlight: Advancing Anaerobic Microbiota Research Using a Novel Respirometry Protocol

Author Spotlight: Advancing Anaerobic Microbiota Research Using a Novel Respirometry Protocol

Published on: April 26, 2024

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Published on: June 15, 2014

相关概念视频

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...

Microbial Fermentation

Microbial Fermentation

Fermentation is a crucial anaerobic metabolic process that enables microbes to derive energy from sugar without relying on oxygen or an electron transport chain. This process is fundamental to various biological and industrial applications and is classified based on the metabolic products generated.Role of Pyruvate in FermentationPyruvate and its derivatives serve as key electron acceptors in fermentative pathways. The oxidation of NADH to regenerate NAD+ is essential for the continuation of...

Lipid Catabolism

Lipid Catabolism

Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...