食品与发酵工业 >

2022 , Vol. 48 >Issue 18: 142 - 148

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.032022

研究报告

多功能性玉米麸质阿拉伯木聚糖芥子酸酯的制备及性能

  • 李颜利 ,
  • 王丽聪
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  • 1(四川轻化工大学 化学工程学院, 四川 自贡,643000)
    2(江阴职业技术学院 环材系,江苏 江阴,214405)
第一作者:博士,讲师(本文通信作者,E-mail:liyanli0523@suse.edu.cn)

收稿日期: 2022-04-19

  修回日期: 2022-05-25

  网络出版日期: 2022-10-17

基金资助

四川省重点实验室开放课题(CSPC202102);四川省自贡市科技厅重点研发项目(2019YYJC19);四川轻化工大学人才引进项目(2018RCL02);2021年江苏省高校“青蓝工程”项目

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Synthesis and properties of multifunctional sinapic acid corn arabinoxylan esters

  • LI Yanli ,
  • WANG Licong
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  • 1(School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, China)
    2(Department of Environment and Material Engineering, Jiangyin Polytechnic College, Jiangyin 214405, China)

Received date: 2022-04-19

  Revised date: 2022-05-25

  Online published: 2022-10-17

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摘要

该研究从玉米麸质中提取阿拉伯木聚糖(corn arabinoxylan, CAX),与芥子酸(sinapic acid, SA)酰氯酯化反应得到多糖改性产物阿拉伯木聚糖芥子酸酯(sinapic acid corn arabinoxylan esters, SA-CAX),用红外、核磁氢谱、核磁碳谱对其结构进行了分析,用高效液相色谱确定了SA在CAX上的取代度,改变SA的用量,可以得到不同取代度的改性多糖SA-CAX-n(n表示取代度),并用凝胶渗透色谱测定不同取代度的改性多糖的分子质量。然后对改性后多糖的性能进行测试,多糖溶液对紫外光波检测表明,CAX水溶液对紫外光无吸收,而SA-CAX-n对UVB波段的紫外光具有较好的屏蔽作用,此屏蔽作用随SA含量增加而加强;用流变仪测试CAX和SA-CAX-n水溶液的黏度,SA-CAX-n黏度比CAX高,且具有较好的黏弹性,黏度和黏弹性均随改性后多糖的支链程度的提高而提高;通过抗氧化能力指数对SA-CAX-n的抗氧化性进行评价,改性后SA-CAX-n的抗氧化性比改性前CAX有显著提高,取代度n越高,SA-CAX-n的抗氧化性随之升高。

关键词： 芥子酸; 玉米麸质; 多功能性; 阿拉伯木聚糖; 改性

本文引用格式

李颜利 , 王丽聪 . 多功能性玉米麸质阿拉伯木聚糖芥子酸酯的制备及性能[J]. 食品与发酵工业, 2022 , 48(18) : 142 -148 . DOI: 10.13995/j.cnki.11-1802/ts.032022

Abstract

In this study, corn bran was used as raw material to extracte arabinoxylan (CAX) by alkali-H2O2 method. Sinapic acid (SA) was linked to corn bran arabinoxylan (CAX) by esterification to generate sinapic acid arabinoxylan esters (SA-CAX-n) (n represents the grafting degree) with various grafting degrees. Then the structure of SA-CAX was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (NMR), the degree of substitution was determined by high performance liquid chromatography (HPLC), and the molecular weight was tested by gel permeation chromatography (GPC). The antioxidant activity of SA-CAX-n was investigated by oxygen radical antioxidant capacity (ORAC).The results showed that the antioxidant activity of SA-CAX-n was much better than that of CAX. Furthermore, the SA-CAX-n possessed high UV absorption ability and viscosity, and they strengthened with the growing n of SA-CAX-n.

Key words： sinapic acid; corn bran; multifunction; arabinoxylan; modify

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