研究报告

荔浦芋膳食纤维的益生作用及主要活性成分研究

  • 张红 ,
  • 翁鸿莹 ,
  • 梅皓 ,
  • 张佳丽 ,
  • 林莹
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  • (广西大学 轻工与食品工程学院,广西高校特色农产品精深加工与安全控制重点实验室,广西 南宁,530004)
第一作者:硕士研究生(林莹教授为通信作者,E-mail:linying@gxu.edu.cn)

收稿日期: 2026-01-16

  修回日期: 2026-02-14

  网络出版日期: 2026-07-31

基金资助

广西农业科技创新联盟项目(桂农科盟202515)

Research on probiotic effect and main active ingredients of Lipu taro dietary fiber

  • ZHANG Hong ,
  • WENG Hongying ,
  • MEI Hao ,
  • ZHANG Jiali ,
  • LIN Ying
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  • (Key Laboratory of Deep Processing and Safety Control for Specialty Agricultural Products in Guangxi Universities,College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China)

Received date: 2026-01-16

  Revised date: 2026-02-14

  Online published: 2026-07-31

摘要

该文旨在明确中升糖指数(glycemic index,GI)值荔浦芋中膳食纤维的主要活性成分,探究其益生效果,为其在功能性食品中的开发应用提供理论依据。通过高温酶法提取可溶性膳食纤维(soluble dietary fiber,SDF)和不可溶性膳食纤维(insoluble dietary fiber,IDF),结合小鼠实验和体外单菌发酵实验评价荔浦芋来源膳食纤维的益生活性;通过体外单菌发酵实验、分子质量和单糖组成分析SDF的主要活性成分。结果显示,SDF总糖含量85.61%、糖醛酸含量16.90%,还原糖含量29.89%;SDF和IDF均能够提高肠道微生物的丰度和多样性,明显提高乳杆菌属和厚壁菌门、放线菌门的相对丰度。在单菌发酵实验中,4株益生菌均能较好的利用SDF和SDF-0.3组分作为碳源,且对大肠杆菌无明显促进作用。SDF-0.3组分主要由中、小分子质量(0.832~29.086)kDa的糖类物质组成,并且主要含有半乳糖醛酸、半乳糖和葡萄糖。综上,SDF是一种果胶类膳食纤维,具有显著益生效果,可通过调节肠道菌群结构发挥肠道健康保护作用,其核心活性成分是SDF-0.3组分。

本文引用格式

张红 , 翁鸿莹 , 梅皓 , 张佳丽 , 林莹 . 荔浦芋膳食纤维的益生作用及主要活性成分研究[J]. 食品与发酵工业, 2026 , 52(13) : 308 -317 . DOI: 10.13995/j.cnki.11-1802/ts.045878

Abstract

To clarify the main active components of dietary fiber in Lipu taro (medium glycemic index, GI), this study explores its probiotic effects and lays a theoretical foundation for its development and application in functional foods.It adopted a high-temperature enzymatic method to extract soluble dietary fiber (SDF) and insoluble dietary fiber (IDF).The study evaluated the probiotic effects of Lipu taro dietary fiber via mouse experiments and in vitro monobacterial fermentation assays.It analyzed the main active components of SDF using monobacterial fermentation experiments, molecular weight determination, and monosaccharide composition analysis.The results showed that SDF contains 85.61% total sugar, 16.90% uronic acid, and 29.89% reducing sugar.Both SDF and IDF improved the abundance and diversity of intestinal microorganisms, and significantly increase the relative abundance of Lactobacillus spp., Firmicutes, and Actinobacteria.In monobacterial fermentation experiments, all four probiotics effectively utilized SDF and its SDF-0.3 fraction as carbon sources, but did not significantly promote Escherichia coli growth.The SDF-0.3 fraction mainly consisted of carbohydrates with a molecular weight of (0.832-29.086) kDa, primarily galacturonic acid, galactose, and glucose.In summary, SDF is a pectin-rich dietary fiber with significant probiotic effects.It protects intestinal health by regulating intestinal microorganisms structure, and its main active component is the SDF-0.3 fraction.

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