相关实验视频

Updated: May 5, 2026

A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments

A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments

Published on: October 2, 2012

通过Cupriavidus sp.进行增强的多基酸生物合成. 在受控的非爆炸性条件下使用CO2的CY-1

Young-Cheol Chang¹, M Venkateswar Reddy², Yasuteru Mawatari¹

¹Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, Muroran Institute of Technology, 27-1 Mizumoto, Muroran, 050-8585, Japan.

|February 5, 2025

概括

这项研究表明,使用氧化细菌和二氧化碳 (CO2) 产生高效的多氧酸盐 (PHA). 皮虫 (Cupriavidus sp.) 是一种的植物. CY-1获得了高的PHA产量,展示了可持续生物塑料制造的潜力.

科学领域:

生物技术和微生物工程
聚合物科学和可持续材料

背景情况:

聚酸酸 (PHAs) 是具有多种应用的可生物降解聚合物.
使用二氧化碳 (CO2) 和 (H2) 可持续生产PHAs是一个活跃的研究领域.
优化发酵条件对于高效的PHA生物合成至关重要.

研究的目的:

为了评估Cupriavidus sp.的PHA生产能力. 在各种非爆炸性气体条件下CY-1.
研究不同气体成分和添加剂对PHA产量和生产率的影响.
探索增强PHA生产和共聚合物合成的战略.

主要方法:

种植Cupriavidus sp. 的方法使用混合气体基板 (H2,O2,CO2) 的 CY-1.
优化发酵参数,包括气体度和添加Tween 80.
两步发酵,使用酸生产聚3-基酸-co-3-基酸 (PHBV).
对phaC基因表达的分析与PHA生产力的相关性.

主要成果:

皮虫 (Cupriavidus sp.) 是一种的植物. 使用H2/O2/CO2混合物,CY-1实现了11.87gL-1的高PHA生产率,收益率为90.6%.
确定了最佳的非爆炸性条件,并研究了特定的H2和O2度.
增加二氧化碳对增长和PHA生产产生了负面影响,而Tween 80提高了生产率.
在1.47g L-1的PHBV的成功合成是通过两步过程实现的.
根据phaC基因表达水平,可以预测PHA生产率.
来自生物降解的二氧化碳显示了PHA生产的重大潜力.

结论:

皮虫 (Cupriavidus sp.) 是一种的植物. CY-1是一种在安全条件下使用CO2和H2进行PHA生物合成的高效菌株.
优化的发酵策略和特定基质的使用可以显著提高PHA和PHBV的生产.
基因表达分析为预测PHA产量提供了宝贵的见解.
利用生物降解过程中的二氧化碳为可持续生物塑料制造提供了一个有希望的途径.

关键词:

的二氧化碳 (CO2) 排放量.皮虫 (Cupriavidus sp.) 是一种的植物. 在CY-1中使用.非爆炸性条件的条件.PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB PHB 在 PHBVV 找在80岁到80岁之间

更多相关视频

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability

Published on: April 22, 2016

Assembly and Quantification of Co-Cultures Combining Heterotrophic Yeast with Phototrophic Sugar-Secreting Cyanobacteria

Assembly and Quantification of Co-Cultures Combining Heterotrophic Yeast with Phototrophic Sugar-Secreting Cyanobacteria

Published on: December 27, 2024

相关概念视频

Biosynthesis in Bacteria

Biosynthesis in Bacteria

Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...

Biosynthesis of Polysaccharides

Biosynthesis of Polysaccharides

Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...

Bioreactor Controls-III

Bioreactor Controls-III

Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...

Production of Organic Acids

Production of Organic Acids

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...

Production of Antibiotics

Production of Antibiotics

Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...

Bioplastics

Bioplastics

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...