通过干法分馏从豆粕中提取的膳食纤维的理化性质、结构及其对肠道微生物群的调节作用

IF 4.8 1区 农林科学 Q1 FOOD SCIENCE & TECHNOLOGY
Ruyang Chen , Mengmeng Zhang , Yizhe Zhang , Zhaoli Tong , Xiuhuai Li , Xiaohan Wu , Dan Li , Hui Wu , Ping He
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引用次数: 0

摘要

目前,从食品加工副产物中提取膳食纤维(DF)主要采用干法分馏,因为干法分馏具有能耗低、环保等优点。干法分馏的步骤主要包括研磨和空气分级。豆粕(SBM)是一种富含 DF 的加工副产品。很少有研究采用干法分馏提取 SBM 膳食纤维(SMF),通过干法分馏提取的 SMF 的理化性质、结构特征和活性仍不清楚。本文通过干法分馏制备了SMF,结果表明,与无孔、结晶度高的SBM相比,SMF表面疏松多孔,结晶度低。此外,SMF 的持水性、持油性和膨胀能力都明显高于 SBM。体外粪便发酵24小时后,SMF组产生了大量的短链脂肪酸(SCFA),如乙酸、丙酸和丁酸,SCFA的总产生量大大高于菊粉(INL)组。SMF还促进了有益菌(如普雷沃特氏菌、 Dialister和双歧杆菌)的相对丰度,降低了有害菌(如志贺氏大肠杆菌)的相对丰度。总之,通过干法分馏提取的SMF能显著改变肠道微生物群的相对丰度和多样性,促进SCFA的产生,有利于调节人体肠道微生物群。本研究可为通过干法分馏制备 DF 提供启示,并为 SMF 用作益生元提供理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Physicochemical properties, structure and regulatory effect on gut microbiota of dietary fiber extracted from soybean meal via dry fractionation

Physicochemical properties, structure and regulatory effect on gut microbiota of dietary fiber extracted from soybean meal via dry fractionation

Currently, dry fractionation is employed to extract dietary fiber (DF) from food processing bypuroduct owing to its advantages of low energy and eco-friendly. Procedures of dry fractionation mainly include milling and air classification. Soybean meal (SBM) is a processing byproduct rich in DF. Few studies have used dry fractionation to extract SBM dietary fiber (SMF), and the physicochemical properties, structural characteristics, and activity of SMF extracted via dry fractionation remain unclear. Herein, SMF was prepared via dry fractionation and results showed that compared with that of SBM without pores and high crystallinity, SMF had loose and porous surface and low crystallinity. Moreover, the water holding capacity, oil holding capacity and swelling ability of SMF were significantly higher than SBM. After 24 h of in vitro fecal fermentation, the SMF group produced abundant short chain fatty acids (SCFA) such as acetic, propionic, and butyric acids and the total SCFA production was substantially higher than that in the inulin (INL) group. SMF also promoted the relative abundance of beneficial bacteria such as Prevotella, Dialister, and Bifidobacterium and reduced the relative abundance of harmful bacteria such as Escherichia–Shigella. In conclusion, SMF extracted via dry fractionation can significantly alter the relative abundance and diversity of gut microbiota and promote the production of SCFA, which is conducive to the regulation of the human gut microbiota. This study can provide insights into the preparation of DF via dry fractionation and provide theoretical basis for SMF to be used as a prebiotic.

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来源期刊
Food Bioscience
Food Bioscience Biochemistry, Genetics and Molecular Biology-Biochemistry
CiteScore
6.40
自引率
5.80%
发文量
671
审稿时长
27 days
期刊介绍: Food Bioscience is a peer-reviewed journal that aims to provide a forum for recent developments in the field of bio-related food research. The journal focuses on both fundamental and applied research worldwide, with special attention to ethnic and cultural aspects of food bioresearch.
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