张莉,陈蕴智,滕玉红,张正健.壳聚糖-原花青素高抗氧化抑菌薄膜的研究[J].包装工程,2020,41(15):103-109.
ZHANG Li,CHEN Yun-zhi,TENG Yu-hong,ZHANG Zheng-jian.Chitosan-Procyanidine Antibacterial Film with High Antioxidant Activity[J].Packaging Engineering,2020,41(15):103-109. |
| 壳聚糖-原花青素高抗氧化抑菌薄膜的研究 |
| Chitosan-Procyanidine Antibacterial Film with High Antioxidant Activity |
| 投稿时间：2019-12-06 修订日期：2020-08-10 |
| DOI：10.19554/j.cnki.1001-3563.2020.15.016 |
| 中文关键词: 原花青素 壳聚糖 抗氧化活性 抑菌包装材料 |
| 英文关键词: procyanidine chitosan antioxidant activity antibacterial packaging materials |
| 基金项目:天津市企业科技特派员项目（19JCTPJC55200） |
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| 中文摘要: |
| 目的 将具有抑菌性能和抗氧化活性的原花青素与壳聚糖共混制备一种高抗氧化性能且绿色环保的膜材料，以期用于食品包装。方法 采用流延法制备不同质量比的壳聚糖/原花青素复合膜（CS-PC），测定其力学性能、阻隔性能、抑菌性能和抗氧化性能。结果 通过对不同质量比（mcs∶mpc）CS-PC膜的厚度、溶解度和拉伸强度进行测试，确定了壳聚糖与原花青素的最佳质量比为40∶3。与壳聚糖原膜相比，CS-PC膜的溶胀度和溶解度显著下降，下降率分别为30.73%和59.90%，拉伸强度提高了29.94%。加入原花青素后，壳聚糖膜的抑菌性能和抗氧化性能得到大大提高，CS-PC膜对大肠杆菌和黑曲霉的抑菌性能分别提高了53.57%和28.82%，对金黄色葡萄球菌的抑菌性能提高不明显；原花青素加入量越大，CS-PC膜的抗氧化活性就越高，当mcs∶mpc=40∶3时，CS-PC膜的DPPH清除率达到了82.35%，相比于CS膜提高了2.4倍。扫描电镜结果表明原花青素小分子的加入使壳聚糖膜的内部结构变得致密，孔状结构得以改善。傅里叶红外光谱分析显示原花青素与壳聚糖之间主要通过氢键交联。结论 添加适量的原花青素到壳聚糖溶液中，可以制备一种高抗氧化活性的食品膜，同时该食品膜具有良好的抑菌性能。 |
| 英文摘要: |
| The work aims to prepare a green and environmentally friendly film material with high antioxidant activi-ty by blending procyanidine with antibacterial properties and antioxidant activity and chitosan for food packaging. Chi-tosan/procyanidine composite films with different mass ratios (mcs∶mpc) were prepared by tape casting method, and their mechanical properties, barrier properties, antibacterial and antioxidant properties were determined. The optimum mass ratio of chitosan to procyanidine was 40∶3 by measuring the thickness, solubility and tensile strength of chitosan-procyanidine film (CS-PC film) with different mass ratios. Compared with the original chitosan film, the swelling degree and solubility of CS-PC film decreased significantly, with a decrease rate of 30.73% and 59.90%, respectively, but the tensile strength increased by 29.94%. With the addition of procyanidine, the antibacterial and antioxidant properties of chitosan films were greatly improved. The antibacterial properties of CS-PC film against Escherichia coli and Aspergillus niger were increased by 53.57% and 28.82%, respectively, but the antibacterial properties of CS-PC films against Staphylococcus aureus were not significantly improved. With the addition of procyanidine, the antioxidant activity of CS-PC was greatly improved, and the higher the amount of procyanidine was, the higher the antioxidant activity of CS-PC film was. When mcs∶mpc=40∶3, the DPPH scavenging rate of CS-PC film reached 82.35%, which was higher than that of CS-control film, increasing by 2.4 times. The SEM results showed that procyanidine micromolecule made the internal structure of chitosan film compact and improved the pore structure. FT-IR analysis showed that the hydrogen bond was the main crosslinking mechanism between procyanidine and chitosan. A kind of food film with high antioxidant activity can be prepared by adding proper amount of procyanidine to chitosan solution, and the film has good antibacterial properties. |
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