Signature of dissolved organic matter and microbial communities based on different oxygen levels response during distillers dried grains with solubles plus sugarcane pith co-fermentations. (April 2022)

• Record Type: Journal Article
• Authors: Wang, Yiwu; Li, Xiaolan; Li, Kecheng; Huang, Yite; Yang, Hongxiang; Zhu, Pengfei; Chi, Zhanyou; Xu, Yongping; Li, Qunliang
• Is Part Of: Bioresource technology. Volume 349(2022)
• Publication Date: 2022-04
• Subjects: DDGS -- Sugarcane pith -- Co-formentation -- Microbial community -- Dissolved organic matter; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2022.126868
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Signature of DOM and associated microbial community were studied. Phenols and alcohols were consumed first in AF, while lipids and proteins first in ANF. Firmicutes, Actinobacteriota and Ascomycota dominated the fermentation process. pH, OM and DOM were the main factors driving microbial community succession. Abstract: The objective of this study was to investigate the relationship between dissolved organic matter (DOM) and microbial communities during the co-fermentation of distillers dried grains with solubles (DDGS) and sugarcane pith at different oxygen levels. In aerobic fermentation (AF), the content of DOM decreased from 32.61 mg/g to 14.14 mg/g, and decreased from 32.61 mg/g to 30.83 mg/g in anaerobic fermentation (ANF). Phenols and alcohols were consumed first in AF, while lipids and proteins were consumed first in ANF. Degradation rates of cellulose, hemicellulose and lignin in AF (6.67%, 39.93%, 36.50%) were higher than those in ANF (0.69%, 18.36%, 9.12%). Firmicutes, Actinobacteriota and Ascomycota were the main phyla in community. Distance-based redundancy analysis showed that pH, organic matter (OM) and DOM were the main driving factors of microbial community succession.