文献类型：期刊文献

英文题名：Relative humidity-triggered polyamide 4/Cinnamaldehyde core-shell nanofibers for antibacterial packaging

作者：Wang, Ziying[1,2];Zhan, Fangke[1,2];Zhang, Di[1,2];Wang, Yibing[1,2];Qiu, Yongjun[1,2,3];Zhang, Jie[1];Wang, Li[1,2];Zhao, Liming[1,2,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Biobased Mat Engn, China Natl Light Ind, Shanghai 200237, Peoples R China;[3]Shanghai Collaborat Innovat Ctr Biomfg Technol SCI, Shanghai 200237, Peoples R China

年份：2023

卷号：357

外文期刊名：JOURNAL OF FOOD ENGINEERING

收录：;EI(收录号：20232814374919);WOS:【SCI-EXPANDED(收录号:WOS:001058522300001)】；

基金：This work was supported by the Research and Development of Technical Standards Project (21DZ2205900) , the 111 Project (B18022) , and the Open Project Funding of the State key Laboratory of Bioreactor Engineering, ECUST (ZDXM 2019) .

语种：英文

外文关键词：Polyamide 4; Cinnamaldehyde; Coaxial electrospinning; RH-Triggered; Active packaging

摘要：Active packaging is an effective strategy for maintaining food freshness and extending shelf life; however, problems such as the uncontrolled release of active substances limit its application. In this study, relative humidity (RH)-triggered antibacterial nanofibers were prepared using the coaxial electrospinning. This is the first study to use polyamide 4 (PA4) for food packaging. The morphological characteristics of nanofibers were studied based on PA4 solution parameters. The microscopic morphology, chemical structure, and hydrophilic, mechanical, and antibacterial properties of the fibers were analyzed. The diameter distribution of PA4/CA core-shell nanofibers was found to be uniform at a shell liquid concentration of 4.0 wt%. The fibers could encapsulate up to 94.43% of CA, effectively release CA at high humidity (90% RH), and inhibit Escherichia coli at a ratio of >99%. The PA4/CA coaxial nanofiber film designed herein would provide a simple and efficient idea for antibacterial active packaging system with the potential for mass production.