多功能秸秆纤维基可视化智能标签的构筑和性能表征
An antibacterial and intelligent cellulose-based label self-assembled via electrovalent bonds for a multi-range sensing of food freshness
智能标签可以实时提供食品新鲜度信息。然而,现有研究的智能标签pH响应范围窄,只能监控单一食品的质量,阻碍了其实际应用。为了突破这个瓶颈问题,本研究设计了一种响应范围宽、指示精度高、高效抑菌的纤维素基智能标签用于监控猪肉、牛奶、菠菜的新鲜度。利用草酸改性秸秆纤维素纤维引入羧基基团(-COO-),通过静电作用键合带正电荷的壳聚糖季胺盐,进一步吸附阴离子复合染料-甲基红和溴百里香酚蓝,最后自组装成智能标签。壳聚糖季胺盐的引入有效地改善了标签的拉伸强度和…查看全部>>
Intelligent labels provide customers with food freshness information.However,the existing label response is limited and can only detect a single kind of food.Here,an intelligent cellulose-based label with highly antibacterial activity for a multi-range sensing freshness was developed to overcome the limitation.Cellulose fibers were modified using oxalic acid to graft-COO-followed by binding chitosan quaternary ammonium salt(CQAS),the remaining charges of whi…查看全部>>
刘若婷;宁语苹;任子豪;许士玉;程倩;杨冬梅;王立娟;
智能纤维素纤维标签 复合染料 高辨识度 宽响应范围 食品新鲜度
Intelligent cellulose-based label Multi-range sensing Food freshness
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