Shandong Science ›› 2020, Vol. 33 ›› Issue (4): 1-6.doi: 10.3976/j.issn.1002-4026.2020.04.001

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Development of high performance gel chromatography for the determination of inulin polymerization

LI Ling-yu1,LI Yu-chen2, ZUO Zhao-he3,TIAN bao-lan3,ZHENG Zhen-jia1*   

  1. 1. Key Laboratory of Food Processing Technology and Quality Control in Shandong Province,College of Food Science and Engineering, Shandong Agricultural University,  Taian 271018, China; 2. Shandong Medicine Technician College, Taian 271000, China; 3. Shandong Zhiyiyuan Health Technology Co., Ltd., Taian 271000, China
  • Received:2020-02-05 Online:2020-07-27 Published:2020-07-27

Abstract: Inulin is a type of natural macromolecular polysaccharide and its physiological activity and processing characteristics are affected by the degree of polymerization.In this study,OHpak SB-802.5 HQ was used as the chromatographic column.The injection volume was 20 μL,the column temperature was 30 ℃,the mobile phase was 0.3 moL/L NaNO3 solution,and the flow rate was 0.3 mL/min.The cubic equation curve was fitted using GPC software.The molecular weights of nine samples were measured using high-performance gel chromatography and the degree of polymerization was calculated. Results showed that the inulin polymerization degree of inulin of nine samples ranged between 10 and 29 and the polymerization degree of different batches and varieties of the same raw material were different. The proposed method provides a reference for analyzing the structural properties and controlling the product quality of inulin.

Key words: inulin, degree of polymerization, high performance gel filtration chromatography, polysaccharide content, relative molecular weight

CLC Number: 

  • O657.7