Degradation of lignocelluloses in straw using AC-1, a thermophilic composite microbial system

Autor: Hongdou Liu, Liqiang Zhang, Yu Sun, Guangbo Xu, Weidong Wang, Renzhe Piao, Zongjun Cui, Hongyan Zhao
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: PeerJ, Vol 9, p e12364 (2021)
Druh dokumentu: article
ISSN: 2167-8359
DOI: 10.7717/peerj.12364
Popis: In composting, the degradation of lignocellulose in straw is problematic due to its complex structures such as lignin. A common solution to this problem is the addition of exogenous inoculants. AC-1, a stable thermophilic microbial composite, was isolated from high temperature compost samples that can decompose lignocellulose at 50–70 °C. AC-1 had a best degradation efficiency of rice straw at 60 °C (78.92%), of hemicellulose, cellulose and lignin were 82.49%, 97.20% and 20.12%, respectively. It showed degrad-ability on both simple (filter paper, absorbent cotton) and complex (rice straw) cellulose materials. It produced acetic and formic acid during decomposition process and the pH had a trend of first downward then upward. High throughput sequencing revealed the main bacterial components of AC-1 were Tepidimicrobium, Haloplasma, norank-f-Limnochordaceae, Ruminiclostridium and Rhodothermus which provides major theoretical basis for further application of AC-1.
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