通过微生物协作加强的生物降解:耐药性,代谢物利用和pH稳定
Jianfeng Zhang1, Wenrong Bing1, Tiancheng Hu1
1College of Life Science, Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Jilin Agricultural University, Changchun, 130118, China.
Environmental research
|September 30, 2023
概括
同时培养Bacillus subtilis和Bacillus velezensis通过稳定pH值和增加降解率,显著提高了的生物降解. 这种微生物合作为废水处理和污染物清除提供了一种新的方法.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 混合微生物培养对于从废水中去除高度的醇是有效的.
- 微生物协作增强醇生物降解的确切机制尚不清楚.
- 了解这些机制对于优化生物修复策略至关重要.
研究的目的:
- 通过共同培养Bacillus subtilis ZWB1和Bacillus velezensis ZWB2.2来研究增强的醇生物降解.
- 阐明这种共同培养系统中微生物协作的基本机制.
- 用微生物联盟为污染物降解提供理论基础.
主要方法:
- 隔离的细菌ZWB1和Bacillus velezensis ZWB2的共同培养.
- 在单种和共种条件下监测醇降解率和度.
- 分析抗氧化和降解酶活动,表面活性剂的产生和pH值的变化.
- 代谢分析以确定影响微生物相互作用和pH稳定的化合物.
主要成果:
- 与单一培养相比,共同培养显著增加了的降解率 (16.7 mg/L·h) 和度 (1500 mg/L).
- 共同培养导致抗氧化酶减少,降解酶和表面活性剂增加,增强醇耐受性.
- 细菌细菌ZWB1利用细菌 velezensis ZWB2的代谢物生长和快速的降解.
- 共同培养稳定了发酵的pH值为7,减轻了酸度对Bacillus velezensis ZWB2.2的抑制作用.
结论:
- 细菌ZWB1和ZWB2之间的微生物协作显著增强了的生物降解.
- 关键机制包括协同酶活动,代谢物交换和关键的pH稳定.
- 这项研究提供了关于微生物协作的多方面机制的见解,以有效地去除污染物.
更多相关视频
09:49Prospecting Microbial Strains for Bioremediation and Probiotics Development for Metaorganism Research and Preservation
Published on: October 31, 2019
22.4K
09:27Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
Published on: April 22, 2016
17.4K
相关概念视频
00:46Bioremediation
18.8K
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.
18.8K
01:30Environmental Applications of Microorganisms
46
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
46
01:28Biological Methods for Microbial Control
55
Biological agents offer an effective means of controlling microbial growth by leveraging natural processes like predation, competition, and the secretion of antimicrobial substances.Predatory bacteria such as Bdellovibrio species target and kill pathogens like Salmonella and E. coli. They are widely used in poultry farms to control infections. Myxococcus species help combat plant-pathogenic fungi. These naturally occurring predators serve as eco-friendly alternatives to chemical pesticides and...
55
01:28Gene Regulation in Microbial Communities: Quorum Sensing
35
Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...
35
01:28Antimicrobial Effectiveness
37
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
37
01:25Lipid Catabolism
39
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...
39