细菌纳米纤维素生产:通过可持续的介质提高生产率和性能
Mohammad Sadegh Jafari1, Tariq Khan2, Shobha Mantripragada3
1Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina Greensboro, Greensboro, NC 27455, United States.
International journal of biological macromolecules
|November 14, 2024
概括
这项研究开发了一个低成本的介质,使用糖蜜和奶酪乳糖生产细菌纳米纤维素 (BNC). 这种方法大大降低了成本,改善了BNC的性能,为塑料提供了可持续的替代品.
科学领域:
- 生物技术是生物技术.
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 高的生产成本阻碍了商业细菌纳米纤维素 (BNC) 制造.
- 开发具有成本效益的BNC生产方法对于其广泛应用至关重要.
研究的目的:
- 调查用于BNC生产的低成本介质,包括糖蜜和奶酪乳糖.
- 通过检查关键因素和添加剂来优化BNC生产.
- 评估低成本媒介对BNC财产和生产成本的影响.
主要方法:
- 使用的Gluconacetobacter hansenii用于BNC发酵.
- 采用一次性方法来研究糖/蛋白质度,pH值和添加剂 (乙醇,酸).
- 比较了低成本介质的BNC生产力和性能与标准的HS介质.
主要成果:
- 在低成本介质中达到0.5275g/L/day的BNC生产率,在0.4%的酸中增加到0.64g/L/day.
- 与HS介质相比,生产成本降低了40倍.
- 生产的BNC具有更厚的纤维,更高的结晶度,更好的机械和热性能,以及更高的聚合度.
结论:
- 一种低成本的糖蜜和奶酪乳糖介质有效地支持了BNC生产.
- 添加乙酸可以提高BNC在低成本中介的生产率.
- 这种方法产生了具有优越特性和显著降低成本的BNC,为传统塑料提供了可持续的替代品.
相关概念视频
Microbial Corrosion
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...
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...


