改善Cyberlindnera jadinii中的核糖酸生产,并优化发酵介质
Mengting Li1, Shuhong Gao2, Pengcheng Yang1
1State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
AMB Express
|February 15, 2024
概括
这项研究开发了一种快速选方法,以改善Cyberlindnera jadinii中的核糖核酸 (RNA) 生产. 优化的发酵介质和新的突变菌株 (WB15) 显著提高了工业应用的RNA产量.
科学领域:
- 生物技术是生物技术.
- 微生物菌株的发展
- 工业发酵 工业发酵是什么
背景情况:
- 核糖核酸 (RNA) 是一种具有各种工业应用的关键分子.
- 提高微生物宿主中的RNA生产率对于成本有效的生产至关重要.
- 网络lindnera jadinii是RNA生产的潜在候选者,但其产量需要改进.
研究的目的:
- 开发一种快速查方法,用于高RNA产生微生物菌株.
- 为了优化发酵条件以增加Cyberlindnera jadinii中的RNA含量.
- 为了识别和表征一种优异的RNA产生突变菌株.
主要方法:
- 大气和室温等离子体突变发生与高通量选相结合.
- 普莱克特 - 伯曼设计和响应表面的方法,以优化介质.
- 发酵,微板阅读器检测和RNA含量的生物化学分析.
主要成果:
- 一种新的突变菌株,WB15,被分离出来,其RNA含量是野生类型的1.4倍.
- 确定了最佳的介质成分 (酵母提取物,大豆,KH2PO4).
- 优化的介质进一步提高了WB15的RNA含量,达到184 mg/g的DCW,增长速度和单细胞RNA含量增加.
结论:
- 一个快速选和优化策略有效地提高了C. jadinii的RNA生产.
- 突变菌株WB15和优化介质为工业RNA制造提供了一个强大的平台.
- 涉及核糖体组装的潜在机制可能有助于增加RNA产量.
相关概念视频
Microbes in Food Production
403
Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
403
Microbes in Beverage Production
298
Alcoholic beverages such as wine, beer, and spirits are the products of microbial fermentation processes that transform simple sugars into ethanol and a wide array of complex flavor compounds. These transformations rely on the metabolic activities of specific yeasts and bacteria, which are selected and controlled to yield the desired beverage characteristics.Wine Fermentation and MaturationWine production begins with the crushing of grapes to release juice and pulp, forming a must that is...
298
Bioreactor Controls-III
67
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...
67
Production 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
Production of Antibiotics
265
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...
265
Production of Pharmaceuticals
94
Industrial insulin production uses genetically engineered E. coli expressing a proinsulin gene controlled by a tryptophan promoter and containing a methionine linker for later cleavage. The cells also carry ampicillin resistance for selective growth. Seed cultures are stored at −80 °C and production begins by thawing a small amount to inoculate starter cultures, which are progressively scaled to a 50,000-L bioreactor. In the bioreactor, E. coli grow in nutrient-rich media under...
94


