School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China.
School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009 Hefei, Anhui, PR China; Anhui Institute of Agro-Products Intensive Processing Technology, 230009 Hefei, Anhui, PR China.
Carbohydr Polym. 2022 Feb 15;278:118914. doi: 10.1016/j.carbpol.2021.118914. Epub 2021 Nov 19.
A colorimetric cellulose acetate (CA) membrane incorporated with Perilla frutescens (L.) Britt. anthocyanins (PFA) and chamomile essential oil (CO) is developed via electrospinning technique for food freshness monitoring and shelf-life extending. The moieties of PFA and CO are well-dispersed in fiber matrix by hydrogen bonds and their incorporation increases the fiber size but with no obvious influence on the fiber morphology at incorporation levels. The presence of CO enhances membrane hydrophobicity. The target membrane of CA-PFA6-CO15 (PFA6%, CO15%) has a wide color change range of pH 2-12 which is high sensitive and reversible towards external pH-stimuli. The membrane has good antibacterial activity against E. coli and S. aureus besides antioxidant activity. The release of bioactive moieties is predominantly controlled by Fickian diffusion. The target membrane can simultaneously monitor pork freshness in real-time and double the shelf-life at 25 °C, indicating its potential application in active and intelligent food packaging.
一种通过静电纺丝技术开发的显色醋酸纤维素（CA）膜，其中掺入了紫苏（L.） Britt. 花青素（PFA）和洋甘菊精油（CO），可用于食品新鲜度监测和延长保质期。PFA 和 CO 的部分通过氢键很好地分散在纤维基质中，其掺入增加了纤维的尺寸，但在掺入水平上对纤维形态没有明显影响。CO 的存在提高了膜的疏水性。CA-PFA6-CO15（PFA6%，CO15%）的目标膜在 pH 2-12 之间具有较宽的颜色变化范围，对外部 pH 刺激具有高灵敏度和可重复性。该膜对大肠杆菌和金黄色葡萄球菌具有良好的抗菌活性，同时还具有抗氧化活性。生物活性部分的释放主要受菲克扩散控制。目标膜可以同时实时监测猪肉的新鲜度，并将 25°C 下的保质期延长一倍，表明其在活性和智能食品包装中有潜在的应用。
