The responses of organic acid production and microbial community to different carbon source additions during the anaerobic fermentation of Chinese cabbage waste. (March 2023)

• Record Type: Journal Article
• Authors: Li, Jiawei; Ma, Dongbo; Tian, Jiahui; Sun, Tongyu; Meng, Qingwei; Li, Jianping; Shan, Anshan
• Is Part Of: Bioresource technology. Volume 371(2023)
• Publication Date: 2023-03
• Subjects: Chinese cabbage waste -- Carbon source -- Organic acid production -- Anaerobic fermentation -- Bacteriome; 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.2023.128624
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Abstract: The effects of glucose, fructose, sucrose and molasses on organic acid levels, protein degradation, nutrient preservation and bacteriome were studied during the anaerobic fermentation of Chinese cabbage waste. The results showed that fructose and molasses additions caused a significant ( p < 0.05) increase in lactic acid production (82.16–89.79 %), acetic acid production (175.41–196.93 %), ammonia nitrogen formation (15.93–37.43 %) and reduction of neutral detergent fiber level (8.17–15.87 %). However, few positive effects of glucose and sucrose additions were found on organic acid production. Furthermore, carbon source additions enriched ( p < 0.05) the acid-producing bacteria, such as Lactobacillus paralimentarius and Lactobacillus heilongjiangensis, upregulated ( p < 0.05) the pathways of carbohydrate and lipid metabolisms and reduced ( p < 0.05) the abundances of Lactobacillus buchneri and Escherichia coli and bacteria that were mobile elements-contained and stress-tolerant. Collectively, fructose and molasses additions enhanced the recycling of Chinese cabbage waste by anaerobic fermentation, in which the desired products are organic acids.