为了应对双重环境挑战,的代谢转化为多甲基酸盐 (PHA):一项审查
Izzati Sabri1, Mohd Zulkhairi Mohd Yusoff1,2, Nor Azlan Nor Muhammad3
1Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, UPM Serdang 43400, Selangor, Malaysia.
Current research in microbial sciences
|February 17, 2025
概括
本综述探讨了使用污染废物用于微生物多酸 (PHA) 生产. 它详细介绍了细菌如何代谢和合成PHA,为污染和生物塑料制造提供了可持续的解决方案.
科学领域:
- 生物技术和环境微生物学
- 聚合物科学与工程 聚合物科学与工程
背景情况:
- 可持续的微生物聚酸 (PHA) 生产可以利用含有有毒污染物如的废物流.
- 醇污染的废水为PHA合成提供了具有成本效益的原料,同时减轻了污染.
- 了解代谢和PHA生物合成途径是优化这一过程的关键,因为的毒性和基质依赖PHA的积累.
研究的目的:
- 阐明细菌中醇生物降解和PHA生物合成的独立机制.
- 调查转化和PHA生产之间的代谢联系,特别是聚基酸盐 (PHB).
- 探索使用作为碳原料用于PHB积累的潜力及其对商业化和污染控制的影响.
主要方法:
- 关于有氧和无氧生物降解途径 (例如,甲基醇和原甲基酸盐途径) 的现有文献的审查.
- 微生物PHA生物合成途径的分析,包括涉及乙乙-CoA,新脂肪酸合成,β氧化和TCA循环的途径.
- 检查将代谢与PHB积累联系在一起的研究,包括微生物混合培养 (MMC) 在缓解毒性的作用.
主要成果:
- 可以通过多种有氧和无氧代谢途径降解.
- PHA生物合成途径是基质依赖的,受碳源可用性和细胞能量状态等因素的影响.
- 微生物混合培养显示出减轻毒性的潜力,增强细菌对PHA生产的性能.
结论:
- 将醇生物降解途径与PHA生物合成联系在一起,为废物整治和生物塑料生产带来了双重好处.
- 利用作为PHB积累的原料是推动PHA商业化的一个有希望的战略.
- 对微生物联盟和代谢工程的进一步研究可以优化-PHA转化效率和可持续性.
相关概念视频
01:26Microbial Bioremediation of Hydrocarbons
150
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
150
01:28Microbial Bioremediation of Pesticides
85
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
85
01:25Production of Organic Acids
105
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
105
01:27Bioplastics
70
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
70
01:25Biofuels
107
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
107
01:28Microbial Bioremediation of Plastics
131
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
131