两个阶段的播种策略及其多反应优化,以提高Debaryomyces nepalensisNCYC 341313的西利产量
Saivi Singh1, Sathyanarayana N Gummadi1
1Applied and Industrial Microbiology Laboratory, Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras Chennai 600 036, India.
Bioresource technology
|September 11, 2024
概括
一个新的两阶段播种策略优化了Debaryomyces nepalensis. nepalensis的氧化糖转化为氧化醇的转化. 这增强了西利的生产,产量和生产力,这表明了一种简单的方法来加快酶系统以增加产量.
科学领域:
- 生物技术是生物技术.
- 微生物发酵 微生物发酵
- 生物化学工程 生物化学工程
背景情况:
- 从西洛中生产利醇对于各种行业至关重要.
- 优化微生物发酵过程,如使用Debaryomyces nepalensis的微生物发酵过程,是提高效率的关键.
- 种子培养的发展显著影响发酵的结果.
研究的目的:
- 开发和优化一个两阶段的种植策略,以提高糖转化为糖醇的转化.
- 为了最大限度地提高氧化醇度,产量和生产力,使用Debaryomyces nepalensis NCYC 3413.
- 为了研究优化的注射器年龄和体积对酶活性的影响.
主要方法:
- 采用多响应优化来确定最佳的注射器年龄和体积.
- 使用Debaryomyces nepalensis NCYC 3413.进行了发酵实验.
- 测量了酶活性 (氧化糖减少酶和氧化醇脱酶).
主要成果:
- 最佳的注射条件被确定为5.86小时的年龄和11.66%的体积.
- 糖醇度增加至59.71g/L,产量提高至0.66g/g,生产率显著上升至1.24g/L.h.
- 克西洛斯减少酶的活性增加了1.67倍,而克西利脱酶的活性减少了1.3倍.
结论:
- 一个简单的两阶段播种策略有效地提高了西利的生产.
- 优化的注射器参数显著提高了发酵效率和酶活性.
- 这一策略提供了一种可行的方法来加快酶系统,以提高利醇生产率.
相关概念视频
01:22Bioreactor 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...
01:28Methods of Medium Optimization
Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...
01:27Production of Alcohol
Continuous fermentation is a key strategy in industrial ethanol production, particularly when efficiency, scalability, and high yields are essential. This approach allows for uninterrupted operation and optimized resource utilization. The primary feedstock, corn starch, undergoes enzymatic hydrolysis facilitated by α-amylase and glucoamylase. These enzymes break down the starch into fermentable sugars such as glucose, which are readily assimilated by fermentative microorganisms.Fermentation...
01:27Production 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...