In vitro fermentation characteristics of different types of fiber-rich ingredients by pig fecal inoculum

文献类型： 外文期刊

第一作者： Luo, Chengzeng

作者： Luo, Chengzeng;Gao, Qingtao;Liu, Xuelan;Luo, Chengzeng;Duan, Jiujun;Zhong, Ruqing;Liu, Lei;Gao, Qingtao;Chen, Liang;Zhang, Hongfu;Luo, Chengzeng

作者机构：

关键词： in vitro fermentation; fibers; gas production; SCFAs; microbiota

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：4.1； 五年影响因子：4.2 ）

ISSN： 0022-5142

年卷期： 2024 年

页码：

收录情况： SCI

摘要： BACKGROUND: Dietary fibers with varying physicochemical properties have different fermentation characteristics, which may differently impact host health. The present study aimed to determine the fermentation characteristics including gas production kinetics, short-chain fatty acids (SCFAs) production and microbial composition of different fibrous ingredients using in vitro fermentation by fecal microbiota. RESULTS: Sugar beet pule (SBP), wheat bran (WB), dried corn distillers grains with solubles (DDGS), rice bran (RB) and alfalfa meal (AM) were selected to fermentation in vitro for 36 h. The results showed that SBP had the greatest gas production. SBP had the highest in vitro dry matter fermentability (IVDMF) and production of acetate, propionate and total SCFAs, followed by WB, which were all greater than DDGS, AM and RB. The alpha-diversity was higher in the DDGS, AM and RB groups than in the WB and SBP groups. Differences in microbial community composition were observed among groups. The relative abundance of Treponema was highest in WB group. RB group showed lower Prevotella abundance than other groups but had higher Succinivibrio abundance. Interestingly, the Lactobacillus reached the highest abundances in the DDGS group. Correlation analysis indicated that the relative abundance of Treponema and Prevotella was positively associated with the gas production, IVDMF and SCFAs, whereas norank_f_Muribaculaceae, Rikenellaceae_RC9_gut_group, Lysinibacillus and Succinivibrio were the opposite. CONCLUSION: Collectively, WB and SBP were fermented rapidly by fecal microbiota compared to DDGS, AM and RB. Different fiber sources have different fiber compositions and fermentation properties that affect the microbial compositins and SCFAs production. (c) 2024 Society of Chemical Industry. (c) 2024 Society of Chemical Industry.

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