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相关概念视频

Bioreactor Design and Operational System01:29

Bioreactor Design and Operational System

Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
Bioreactor Controls-I01:28

Bioreactor Controls-I

Maintaining optimal conditions within fermenters is essential for maximizing microbial productivity and ensuring process efficiency. This lesson focuses on key parameters—temperature, foam, pH, carbon dioxide, oxygen, and pressure—and their precise measurement and control strategies in fermentation systems.Temperature ControlTemperature regulation is critical due to the exothermic nature of many fermentation processes. In small laboratory fermenters, temperature is commonly monitored using...
Bioreactor Controls-II01:18

Bioreactor Controls-II

In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...
Bioreactor Controls-III01:22

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...
Designing Growth Media for Bioreactors01:30

Designing Growth Media for Bioreactors

Growth media provide essential nutrients that support cell growth and metabolism, thereby enhancing the yield of valuable products such as enzymes, antibiotics, and biomass. Designing an effective growth medium involves balancing all components to prevent nutrient limitations or toxic excesses, both of which can impair growth and reduce product yields.Composition of a Typical Growth MediumA typical growth medium contains carbon and nitrogen sources, salts, vitamins, trace elements, and...
Upstream Processing01:27

Upstream Processing

Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...

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用于生物工程的自我诱导反应器

Jian Gan1, Huazong Liu1, Jiajun Chen1

  • 1College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, China.

ACS omega
|January 1, 2024
PubMed
概括
此摘要是机器生成的。

自诱导反应器为生物工程提供简单,节能的气液混合. 这项分析审查了临界速度,吸速,质量转移,功率和气体保留,以确定未来的机遇.

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科学领域:

  • 生物化学工程 生物化学工程
  • 化学反应工程 化学反应工程

背景情况:

  • 工业过程中采用了各种反应堆类型,包括装载塔,动坦克,空运和自诱导反应堆.
  • 自诱导反应器在生物工程中特别有利,因为它们的结构简单,高效的气液混合和低能耗.

研究的目的:

  • 研究生物工程中的自我诱导反应器的应用和性能.
  • 分析影响自诱导反应堆有效性的关键运行参数.

主要方法:

  • 审查和分析关于自诱导反应堆的现有文献.
  • 检查五个关键参数:关键速度,吸速,体积质量转移系数,功率特性和气体保持.

主要成果:

  • 自诱导反应器在生物工程应用中显示出高效的气液质量转移的巨大潜力.
  • 了解临界速度,吸速和气体保持的相互作用对于优化反应堆性能至关重要.
  • 功率特征和体积质量转移系数为反应堆设计和扩展提供了关键指标.

结论:

  • 自诱导反应器代表了各种生物工程过程的一个有前途的技术.
  • 对优化操作参数和反应堆设计的进一步研究可以在该领域开启新的机会.
  • 应对当前的挑战将加强在生物工程中更广泛地采用自诱导反应器.