食品与发酵工业 >

2022 , Vol. 48 >Issue 3: 219 - 225

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.027374

研究报告

聚乳酸/曲酸抗氧化活性包装膜的制备及性能研究

  • 张子墨 ,
  • 王月娇 ,
  • 王夏楠 ,
  • 裴令栋 ,
  • 徐娜 ,
  • 彭勇
展开
  • (山东农业大学 食品科学与工程学院,山东 泰安,271000)
本科生(彭勇副教授为通信作者,E-mail:pengyongxyz@sina.com)

收稿日期: 2021-03-15

  修回日期: 2021-05-11

  网络出版日期: 2022-03-04

基金资助

山东省高等学校青创科技计划项目(2020KJE007);2020年国家级大学生创新训练项目(S202010434016)

收起

Preparation and properties of polylactic acid/kojic acid antioxidant active packaging film

  • ZHANG Zimo ,
  • WANG Yuejiao ,
  • WANG Xianan ,
  • PEI Lingdong ,
  • XU Na ,
  • PENG Yong
Expand
  • (College of Food Science and Engineering,Shandong Agricultural University,Tai'an 271000,China)

Received date: 2021-03-15

  Revised date: 2021-05-11

  Online published: 2022-03-04

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摘要

以聚乳酸(polylactic acid,PLA)为基材,曲酸为抗氧化剂制备活性包装膜,研究了不同浓度曲酸对复合膜物理性能、力学性能及抗氧化活性等的影响,为开发新型食品活性包装材料提供依据。结果表明,加入曲酸后,薄膜的抗氧化性能显著提高。曲酸的加入也提高了复合膜的厚度,增加了膜的颜色,但不透明度降低。薄膜的断裂伸长率随曲酸浓度的增加而增加,红外光谱显示4%曲酸导致聚乳酸膜出现了新的CC双键特征峰,显著加强聚乳酸膜分子链的相互作用,能够观察到苯环骨架的伸缩振动,新形成的CC等化学键也导致薄膜有着较高的抗拉强度,表面产生了明显的波纹。综合来看,添加4%的曲酸能提高膜的抗氧化性能和力学性能,能获得理想的复合膜。

关键词： 聚乳酸; 曲酸; 抗氧化性能; 活性包装膜; 力学性能

本文引用格式

张子墨 , 王月娇 , 王夏楠 , 裴令栋 , 徐娜 , 彭勇 . 聚乳酸/曲酸抗氧化活性包装膜的制备及性能研究[J]. 食品与发酵工业, 2022 , 48(3) : 219 -225 . DOI: 10.13995/j.cnki.11-1802/ts.027374

Abstract

In this study, active packaging film was prepared by using polylactic acid (PLA) as substrate and kojic acid as an antioxidant. The effects of different concentrations of kojic acid on physical properties, mechanical properties and antioxidant activity of the composite film were studied. The results showed that the anti-oxidation performance of the film was significantly improved by the addition of kojic acid. The addition of kojic acid also increased the thickness and color of the composite film but decreased the opacity. The elongation at break of the film increased with the increase of kojic acid concentration. The infrared spectrum showed that 4% kojic acid led to the appearance of a new CC double bond characteristic peak in the polylactic acid film, which could significantly enhance the interaction between the molecular chains of the polylactic acid film, and the stretching vibration of the benzene ring skeleton could be observed. The newly formed CC chemical bond also led to the high tensile strength of the film and the obvious ripple on the surface. In conclusion, adding 4% kojic acid can improve the oxidation resistance and mechanical properties of the composite membrane, and the ideal composite membrane can be obtained.

Key words： polylactic acid; kojic acid; antioxidant property; active packaging film; mechanical properties

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