Vanillin Cross-Linked Chitosan Film with Controlled Release of Green Tea Polyphenols for Active Food Packaging.
Vanillin Cross-Linked Chitosan Film with Controlled Release of Green Tea Polyphenols for Active Food Packaging.
复制标题
绿茶多酚控释香兰素交联壳聚糖膜用于活性食品包装。
DOI：
10.1021/acsfoodscitech.3c00222
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发表时间：
2023-10-20
期刊：
影响因子：
--
通讯作者：
Xie, Ming
中科院分区：
文献类型：
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作者：
Westlake, Jessica R;Laabei, Maisem;Jiang, Yunhong;Yew, Wen Chyin;Smith, Darren L;Burrows, Andrew D;Xie, Ming
我们报道了一种新型的含有香草醛、甘油和绿色茶提取物的交联壳聚糖复合膜。研究了香草醛介导的交联和抗菌绿色茶多酚的掺入的影响。通过傅里叶变换红外（FTIR）分析证实的交联效应将生物聚合物膜的拉伸强度提高到20.9 ± 3 MPa。从壳聚糖-香草醛矩阵的多酚的释放动力学进行了研究，我们报告了一个初始的突释（8小时），然后控制释放（8至400小时）。发现香草醛和绿色茶多酚都是食源性细菌的成功抑制剂，茶多酚的最小抑制浓度测定为0.15 mg/mL（金黄色葡萄球菌）。这些活性成分也显示出很强的抗氧化能力，多酚在所有测试浓度下都能淬灭>80%的2，2-二苯基-1-苦基肼基（DPPH）自由基。降解结果表明，在堆肥中掩埋12周后，所有样品的质量损失都显著（>85%）。通过溶剂浇铸方法制备的生物聚合物膜坚持绿色化学和废物价值化原则。报道的一锅法配方也可应用于具有类似化学功能的其他交联剂和活性化合物。基于所获得的结果，所提出的材料为可降解活性包装材料的开发提供了一个有希望的起点。
We report a novel cross-linked chitosan composite film containing vanillin, glycerol, and green tea extract. The effects of vanillin-mediated cross-linking and the incorporation of antimicrobial green tea polyphenols were investigated. The cross-linking effect, confirmed by Fourier transform infrared (FTIR) analysis, increased the tensile strength of the biopolymer film to 20.9 ± 3 MPa. The release kinetics of polyphenols from the chitosan–vanillin matrix was studied, and we reported an initial burst release (8 h) followed by controlled release (8 to 400 h). It was found that both vanillin and green tea polyphenols were successful inhibitors of foodborne bacteria, with a minimum inhibitory concentration of the tea polyphenols determined as 0.15 mg/mL (Staphylococcus aureus). These active components also displayed strong antioxidant capacities, with polyphenols quenching >80% of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals at all concentrations tested. Degradation results revealed that there was a significant (>85%) mass loss of all samples after being buried in compost for 12 weeks. The biopolymeric films, prepared by solvent casting methods, adhere to green chemistry and waste valorization principles. The one-pot recipe reported may also be applied to other cross-linkers and active compounds with similar chemical functionalities. Based on the obtained results, the presented material provides a promising starting point for the development of a degradable active packaging material.