磷酸盐缓冲液驱动前体缩聚,促进发酵腐殖化

IF 2.8 4区 生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Journal of chemical technology and biotechnology Pub Date : 2024-07-03 DOI:10.1002/jctb.7706
Jiabin Li, Yunlong Zhang, Xiufen Li
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引用次数: 0

摘要

背景好氧发酵一直存在氮损失和腐殖化程度低的问题。本研究旨在探讨磷酸盐缓冲液对好氧发酵中有机物降解和前驱物聚合成腐殖质(HS)的促进作用,并分析不同前驱物所起的关键作用。结果与 CK 和 K 处理相比,KP 处理的腐殖质含量明显增加,最大增幅达 38.29%。此外,磷酸盐的添加提高了氮的保留能力和 HS 结构的复杂性。磷酸盐缓冲液通过促进前体物(多糖、还原糖、多酚、氨基酸和蛋白质)的缩合,增强了多酚和马氏腐殖化途径。结论磷酸盐作为发酵系统的外源添加剂,可减少氮的损失,同时促进前体聚合形成 HS,有利于在施用有机肥后改善土壤肥力和作物生长。© 2024 化学工业学会(SCI)。
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Phosphate buffer-driven precursor polycondensation to promote fermentative humification

BACKGROUND

Aerobic fermentation always suffers from nitrogen loss and low humification degree. The objective of this study was to investigate the promotion of phosphate buffer on organic matter degradation and precursor polymerization into humus (HS) in aerobic fermentation, and to analyze the key roles played by different precursors. In order to achieve this, sludge aerobic fermentation tests were conducted on control (CK), phosphate buffer addition treatment (KP) and potassium chloride addition treatment (K).

RESULTS

The HS content of KP treatment exhibited a notable increase compared to the CK and K treatments, with a maximum increase of 38.29%. In addition, phosphate addition improved the nitrogen retention capacity and the complexity of the HS structure. Phosphate buffer enhanced both the polyphenol and Maillard humification pathways by promoting the condensation of precursors (polysaccharides, reducing sugars, polyphenols, amino acids and proteins). Among these precursors, reducing sugars, amino acids and proteins were identified as the key driving precursors of phosphate.

CONCLUSIONS

Phosphate, as an exogenous additive to the fermentation system, reduces nitrogen loss while promoting precursor polymerization to form HS, which benefits the improvement of soil fertility and crop growth upon organic fertilizer application. © 2024 Society of Chemical Industry (SCI).

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来源期刊
CiteScore
7.00
自引率
5.90%
发文量
268
审稿时长
1.7 months
期刊介绍: Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.
期刊最新文献
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