食品与发酵工业 >

2024 , Vol. 50 >Issue 23: 114 - 122

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.038323

研究报告

载银纳米纤维素-胶原蛋白肽复合膜的制备及性能表征

  • 孙保龙 ,
  • 李彩云 ,
  • 张玉斌 ,
  • 张丽
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  • (甘肃农业大学 食品科学与工程学院,甘肃 兰州,730070)
第一作者:硕士研究生(张玉斌教授为通信作者,E-mail:zhangyb@gsau.edu.cn)

收稿日期: 2023-12-20

  修回日期: 2024-02-05

  网络出版日期: 2024-12-27

基金资助

国家自然科学基金项目(32360610);国家现代农业(肉牛牦牛)产业技术体系建设专项(CARS-37);国家“十四五”重点研发计划课题子项目(2021YFD2100503-2-2)

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Preparation and characterisation of silver-loaded nanocellulose-collagen peptide composite films

  • SUN Baolong ,
  • LI Caiyun ,
  • ZHANG Yubin ,
  • ZHANG Li
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  • (College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China)

Received date: 2023-12-20

  Revised date: 2024-02-05

  Online published: 2024-12-27

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摘要

为开发具有抑菌效果且可生物降解的复合膜,该文以胶原蛋白肽为基材,经硫酸铵水解微晶纤维素制备的纳米纤维素中加入AgNO3溶液,原位还原制备的载银纳米纤维素作为强化剂,制备了一种综合性能良好的载银纳米纤维素-胶原蛋白肽复合膜。采用响应面法优化不同纳米纤维素添加量、NaCl添加量、pH和反应温度对纳米纤维素-胶原蛋白肽复合膜机械性能的影响。测定不同纳米银含量的复合膜的拉伸强度等物理指标,并通过傅里叶红外光谱分析、扫描电镜等对其结构进行表征。结果表明,当纳米纤维素添加量3.34%(质量分数)、NaCl添加量5.35%(质量分数)、pH值为7.1、加热温度41 ℃时,所得复合膜拉伸强度为12.25 MPa。当纳米银理论质量占纳米纤维素质量的6%时,该复合膜拉伸强度为18.17 MPa,相较于纳米纤维素-胶原蛋白肽复合膜,拉伸强度提升了64.28%,同时,断裂伸长率降低了31.58%,不透明度增加了95.15%,水蒸气透过系数降低了40.86%。综上所述,载银6%的纳米纤维素能有效提升载银纳米纤维素-胶原蛋白肽复合膜的综合性能。

关键词： 牛皮胶原蛋白肽; 纳米银; 纳米纤维素; 载银纳米纤维素; 可生物降解膜

本文引用格式

孙保龙 , 李彩云 , 张玉斌 , 张丽 . 载银纳米纤维素-胶原蛋白肽复合膜的制备及性能表征[J]. 食品与发酵工业, 2024 , 50(23) : 114 -122 . DOI: 10.13995/j.cnki.11-1802/ts.038323

Abstract

To develop a composite membrane with bacteriostatic effect and biodegradable,in this experiment, a silver-loaded nanocellulose prepared by ammonium sulfate hydrolysis of microcrystalline cellulose was added to silver nitrate solution as a reinforcement, and silver-loaded nanocellulose as a reinforcing agent with collagen peptide as the substrate, and a silver-loaded nanocellulose-collagen peptide composite membrane with good comprehensive performance was prepared.Response surface methodology was used to optimise the effects of different nanocellulose additions, sodium chloride additions, pH and reaction temperature on the mechanical properties of nanocellulose-collagen peptide composite membranes.Physical parameters such as tensile strength of composite films with different silver nanoparticles content were determined and their structures were characterised by Fourier infrared spectroscopy analysis and scanning electron microscopy.Results showed that the tensile strength of the resulting composite film was 12.25 MPa when nanocellulose was added at 3.34% (mass fraction), sodium chloride was added at 5.35% (mass fraction), pH was 7.1, and the heating temperature was 41 ℃.When the theoretical mass of nanosilver accounted for 6% of the mass of nanocellulose, the tensile strength of the composite film was 18.17 MPa, which increased the tensile strength by 64.28% compared with that of nanocellulose-collagen peptide composite film, and at the same time, the elongation at break decreased by 31.58%, the opacity increased by 95.15%, and the water vapour transmission coefficient decreased by 40.86 %.In conclusion, silver-loaded 6% nanocellulose can effectively enhance the comprehensive performance of silver-loaded nanocellulose-collagen peptide composite membrane.

Key words： bovine collagen peptide; silver nanoparticles; nanocellulose; silver-loaded nanocellulose; biodegradable membranes

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