Cheng Meng, Yan Xiaoran, Cui Yingjun, Han Minjie, Wang Yirong, Wang Juan, Zhang Rongfei, Wang Xiangyou
School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
Polymers (Basel). 2022 Mar 17;14(6):1214. doi: 10.3390/polym14061214.
Active packaging films were prepared by adding red cabbage anthocyanin extract (RCAE) into acetylated distarch phosphate (ADSP). This paper investigated the influence of the interaction relationship between RCAE and the film matrix on the structure, barrier, antioxidant and release properties of active films. Sixteen principal compounds in RCAE were identified as anthocyanins based on mass spectroscopic analysis. Micromorphological observations indicated that the RCAE distribution uniformity in the films decreased as the RCAE content increased. When the concentration of RCAE was not higher than 20%, the moisture absorption and oxygen permeability of films decreased. The stability of RCAE in the films was enhanced by the electrostatic interaction between RCAE and ADSP with the formation of hydrogen bonds, which facilitated the sustainability of the antioxidant properties of films. The release kinetics of RCAE proved that the release rate of RCAE in active films was the fastest in distilled water, and Fickian’s law was appropriate for portraying the release behavior. Moreover, the cytocompatibilty assay showed that the test films were biocompatible with a viability of >95% on HepG2 cells. Thus, this study has established the suitability of the films for applications in active and food packaging.
通过将红甘蓝花青素提取物（RCAE）添加到乙酰化磷酸双淀粉（ADSP）中来制备活性包装薄膜。本文研究了RCAE与薄膜基质之间的相互作用关系对活性薄膜的结构、阻隔性、抗氧化性和释放性能的影响。基于质谱分析，RCAE中的16种主要化合物被鉴定为花青素。微观形态观察表明，随着RCAE含量的增加，其在薄膜中的分布均匀性降低。当RCAE浓度不高于20%时，薄膜的吸湿率和透氧率降低。RCAE与ADSP之间的静电相互作用以及氢键的形成增强了RCAE在薄膜中的稳定性，这有助于薄膜抗氧化性能的可持续性。RCAE的释放动力学证明，RCAE在活性薄膜中的释放速率在蒸馏水中最快，菲克定律适用于描述其释放行为。此外，细胞相容性测定表明，测试薄膜具有生物相容性，在HepG2细胞上的活力>95%。因此，本研究确定了该薄膜在活性包装和食品包装应用中的适用性。
