食品与发酵工业 >

2022 , Vol. 48 >Issue 12: 75 - 81

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.028589

研究报告

二醛基纤维素/明胶复合膜的制备与性质研究

  • 徐昊洋 ,
  • 李文哲 ,
  • 田玥 ,
  • 赵敏孜 ,
  • 曾凯芳 ,
  • 阮长晴
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  • 1(西南大学 食品科学学院,重庆,400715)
    2(西南大学,食品贮藏与物流研究中心,重庆,400715)
第一作者:本科生(阮长晴副教授为通信作者,E-mail:changqing.r@hotmail.com)

收稿日期: 2021-07-08

  修回日期: 2021-07-23

  网络出版日期: 2022-07-15

基金资助

“十三五”国家重点研发计划项目(2019YFD1002300);国家自然科学青年基金项目(32001752);川菜发展研究中心科研项目(CC21Z04)

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Preparation and characterization of 2,3-dialdehyde cellulose/gelatin film

  • XU Haoyang ,
  • LI Wenzhe ,
  • TIAN Yue ,
  • ZHAO Minzi ,
  • ZENG Kaifang ,
  • RUAN Changqing
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  • 1(College of Food Science, Southwest University, Chongqing 400715, China)
    2(Food Storage and Logistics Research Center, Southwest University, Chongqing 400715, China)

Received date: 2021-07-08

  Revised date: 2021-07-23

  Online published: 2022-07-15

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摘要

该研究向明胶(gelatin,GEL)溶液中添加不同质量分数二醛基纤维素(dialdehyde cellulose,DAC)水溶液制备二醛基纤维素交联的明胶复合膜(D-GEL),研究DAC不同添加比例对D-GEL的结构、微观形貌、紫外屏蔽性能、拉伸性能、溶胀度、溶解度及水接触角、阻隔性能和热稳定性能的影响。结果表明,DAC与GEL溶液有良好的相容性,DAC的加入可增强D-GEL对紫外线的阻隔能力,显著降低D-GEL的溶胀度和溶解度;同时,D-GEL的拉伸强度和断裂伸长率随DAC的添加先增后减,其中添加10%(质量分数)DAC的复合膜拉伸性能最好;DAC的加入可以改善D-GEL的表面疏水性,进而降低其水蒸气和氧气透过系数,添加20%(质量分数)DAC复合膜的阻隔性能最好。

关键词： 明胶; 水溶性二醛基纤维素; 交联; 天然高分子复合膜; 紫外屏蔽

本文引用格式

徐昊洋 , 李文哲 , 田玥 , 赵敏孜 , 曾凯芳 , 阮长晴 . 二醛基纤维素/明胶复合膜的制备与性质研究[J]. 食品与发酵工业, 2022 , 48(12) : 75 -81 . DOI: 10.13995/j.cnki.11-1802/ts.028589

Abstract

In this paper, different concentrations of 2,3-dialdehyde cellulose (DAC) was added to gelatin (GEL) aqueous solution for the preparation of crosslinked gelatin composite film (D-GEL), and the influence of the addition of DAC with different proportions on the structure, micro-morphology, UV-shielding performance, tensile properties, swelling degree, solubility, water contact angle, barrier property and thermal stability of D-GEL were studied. The results showed that DAC had good compatibility with GEL and could enhance the obstructing capacity of D-GEL to UV, significantly reducing the swelling degree and solubility of D-GEL. Moreover, the tensile strength and elongation at break of D-GEL increased firstly and then decreased with the addition of DAC. Among which, the composite film with the addition of 10% DAC presented the best tensile properties. The addition of DAC could improve the hydrophobicity of the surface of D-GEL and reduce its water vapor and oxygen permeability. The composite film with the addition of 20% DAC showed the best barrier performance.

Key words： gelatin; water-soluble 2,3-dialdehyde cellulose; crosslinking; natural polymer; UV-shielding

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