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Bioresour Technol

Title:		Monitor process state of batch anaerobic digestion in reliance on volatile and semi-volatile metabolome
Author(s):		Lu F; Chen W; Duan H; Zhang H; Shao L; He P;
Address:		"Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China. Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China. Institute of Waste Treatment and Reclamation, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China; Shanghai Engineering Research Center of Multi-source Solid Wastes Co-processing and Energy Utilization, Shanghai 200092, PR China. Electronic address: solidwaste@tongji.edu.cn"
Journal Title:		Bioresour Technol
Year:		2022
Volume:		20220310
Issue:
Page Number:		126953 -
DOI:		10.1016/j.biortech.2022.126953
ISSN/ISBN:		1873-2976 (Electronic) 0960-8524 (Linking)
Abstract:		"It has been a challenge to recognize appropriate compounds as indicators for monitoring and early-warning of the anaerobic digestion process. A strategy was initiated to explore the evolution of the panorama profile of volatile and semi-volatile metabolites. Non-target analysis using high-resolution gas chromatography coupled with Orbitrap mass spectrometry was applied to construct a time-series molecular fingerprint of 218 metabolites classified in 14 categories. Alkanes accounted for the main part in early and late stages of methanization and aromatic compounds were the major in middle stage. Spearman correlation analysis and partial least squares analysis unwind that Trichococcus (1.49%-83.96%) was positively related to most of metabolites at early and middle stages, while Brevundimonas (0%-24.04%) was positively related to acylamide at late stage. This indicated that microbial volatile organic compounds were possible to serve as biochemical indicators for anaerobic digestion performance and to build nexus of 'what' (metabolites), 'who' (microorganism), and 'how' (kinetics)"
Keywords:		Anaerobiosis Gas Chromatography-Mass Spectrometry/methods Mass Spectrometry Metabolome *Volatile Organic Compounds/analysis Gas chromatography coupled with Orbitrap mass spectrometry (GC-Orbitrap/MS) Metabolomics Microbial volatile organic compounds (mVOC;
Notes:		"MedlineLu, Fan Chen, Wenwen Duan, Haowen Zhang, Hua Shao, Liming He, Pinjing eng England 2022/03/13 Bioresour Technol. 2022 May; 351:126953. doi: 10.1016/j.biortech.2022.126953. Epub 2022 Mar 10"