1. Enhancing the co-ensiling performance of corn stover and cabbage waste via the addition of cellulase
- Author
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Haiwei Ren, Li Wang, Yanan Sun, Quanlin Zhao, Yongming Sun, Jinping Li, and Bingyun Zhang
- Subjects
Environmental Engineering ,biology ,Silage ,food and beverages ,Bioengineering ,Cellulase ,biology.organism_classification ,Lactic acid ,chemistry.chemical_compound ,Corn stover ,chemistry ,Lactobacillus ,biology.protein ,Hemicellulose ,Fermentation ,Food science ,Cellulose ,Waste Management and Disposal - Abstract
Effects of cellulase addition were assessed relative to the co-ensiling performance of air-dried corn stover (DCS) and cabbage waste (CW). The DCS and CW mixtures were co-ensiled with 0 to 0.3% of cellulase addition, and changes in composition, intermediates, and biological activity were characterized. The results showed that the addition of cellulase enhanced the decomposition of cellulose and hemicellulose by 2.51 to 6.93% and 3.41%, based on different dosages and compared with the control. Thus, the content of water-soluble carbohydrates increased. The acid content also increased from 5.8% for the control to the range 5.16 to 8.51% for the samples containing cellulase. Moreover, there was a shift from homolactic to heterolactic fermentation with prolonged ensiling time, coupled with the dominant lactic acid bacteria shifting from Paralactobacillus and Lactobacillus to more of Lactobacillus. Thus, the addition of cellulase improved the relative abundance of Lactobacillus. An assessment of fermentation quality, therefore, suggested that cellulase addition can improve the silage quality of DCS/CW during co-ensiling.
- Published
- 2021