从废物到高价值:优化和验证从无氧消化物中直接剥离,以实现可持续的微生物蛋白质生产
Antonella Scotto di Uccio1, Silvio Matassa1, Alessandra Cesaro1
1Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, via Claudio 21, 80125, Naples, Italy.
Journal of environmental management
|November 4, 2025
概括
这项研究优化了零化学过程,从消化物中回收,用于微生物蛋白质生产. 与使用原始消化剂相比,直接回收的生物质增长较低,但蛋白质质量有所改善.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 可持续化学 可持续化学
背景情况:
- 对可持续蛋白质来源的日益增长的需求需要有效的资源回收.
- 无氧消化剂是微生物蛋白质生产中的潜在来源.
- 目前的回收方法可能昂贵或涉及危险化学品.
研究的目的:
- 研究和优化一种零化学,低温的直接空气剥离工艺,用于从无氧消化物中回收.
- 评估利用奶酪乳糖透剂将回收的回收到微生物蛋白质的可行性.
- 将直接的回收与其他供应方法进行比较,并评估污染物的影响.
主要方法:
- 在各种温度和空气-消化剂比率下,从无氧消化剂中直接空气剥离.
- 批量和连续运行模式对剥离效率进行了评估.
- 将剥离过程与从奶酪乳糖透物中生产微生物蛋白质的整合.
- 分析重金属对生物质增长和微生物蛋白质质量的影响.
主要成果:
- 在批量模式下达到高达99.9%的脱皮效率,在连续模式下达到61%的效率.
- 在45°C的连续运行中,空气与消化比为4:1的vvm被优化为集成.
- 使用回收的微生物蛋白质生产产生了4.78g的TSS·L−1生物质.
- 直接添加的消化剂产生了更高的生物质 (17 g TSS·L-1),但由于重金属而损害了蛋白质质量.
结论:
- 零化学直接空气剥离是一种有效的方法,用于从无氧消化物中恢复清洁的.
- 将回收的回收到微生物蛋白质是可行的,尽管需要优化生物质产量.
- 回收为微生物蛋白质生产提供了更清洁的替代方案,避免了污染物相关的质量问题.
相关概念视频
01:18Amino Acid Catabolism
966
Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
966
01:22Inorganic Nitrogen Assimilation
446
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
446
01:20Overview of Nitrogen Metabolism
11.0K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
11.0K