Microbial communities and natural fermentation of corn silages prepared with farm bunker-silo in Southwest China

Bioresource Technology
Hao GuanXinquan Zhang

Abstract

This study analyzed the variation of microbial communities, their achieved fermentation quality, and the association between microbial diversity and environmental factors after ensiling of 96 samples prepared with bunker-silo in Southwest China. Most of natural corn silages achieved good fermentation, e.g., low pH value (<4.2) and high levels of lactic acid (36.26-79.83 mg/g DM). Weissella species were the dominant epiphytic bacteria in raw material, while Lactobacillus and Acetobacter species were prevalent in silages. Natural Lactobacillus and Pediococcus species produced more lactic acid during ensiling, while the production of acetic acid was highly positively correlated with both Acetobacter and Bradyrhizobium species. Rainfall and humidity affected community of epiphytic bacteria on the corn material, and the temperature affected richness of bacterial species during ensiling. The results confirmed that microbial community of silages in hot and humid area is unique and climatic factors ultimately affect the fermentation quality through influencing microbial community.

Citations

Sep 14, 2019·Journal of Applied Microbiology·C L S Ávila, B F Carvalho
May 30, 2019·Microbial Cell Factories·Johannes LambrechtHeike Sträuber
Oct 3, 2020·Microorganisms·Humberto Ramírez-VegaL X Zelaya-Molina
Feb 12, 2021·Journal of the Science of Food and Agriculture·Xiang YinJianguo Zhang
Feb 16, 2021·Environmental Microbiology·Gisele Bonato MuraroLuiz Gustavo Nussio
Dec 1, 2020·The Science of the Total Environment·Xian CuiRenjie Dong

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