文献类型：期刊文献

英文题名：A green mussel-bioinspired strategy for grafting 3-ene urushiol and AgNPs into soy protein isolate and fabricating a high-strength antimicrobial bioplastic film

作者：Qi, Zhiwen[1] Yang, Chen[2] Li, Dongxu[4] Zhang, Juanni[4] Xie, Pujun[1] Xue, Xingying[1] Yang, Guliang[3] Wang, Chengzhang[1]

第一作者：齐志文

通信作者：Qi, ZW[1];Yang, GL[2]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Jiangsu, Peoples R China;[2]R&D Ctr Yunnan Tin Grp holding Co Ltd, Kunming 650000, Peoples R China;[3]Cent South Univ Forestry & Technol, Food Sci & Engn Coll, Natl Engn Lab Rice & By Prod Proc, Changsha, Hunan, Peoples R China;[4]Xian Res Inst Chinese Lacquer, All China Federat Supply & Mkt Cooperat, Xian, Shanxi, Peoples R China

年份：2023

卷号：241

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;Scopus(收录号：2-s2.0-85154051484);WOS:【SCI-EXPANDED(收录号:WOS:000997819700001)】；

基金：Acknowledgments The study was supported by the National Natural Science Foundationof China (32101472) . Jiangsu Provincial Key Laboratory of Biomass Energy and Materials Basic Research Business Project (JSBEM-S-202319) .

语种：英文

外文关键词：3-ene Urushiol; AgNPs; Soy protein isolate; Chitosan; Antimicrobial activity

摘要：Inadequate mechanical stretching, poor barrier performance, and easy microbial breeding of soy protein isolate (SPI) and chitosan (CS) composite film limit its application. Inspired by the mussel phenolic-protein structure, novel cross-linked nanoparticles (U/SPI/Ag) were first fabricated to graft 3-ene urushiol (3-U) and Ag+ into SPI through laccase-oxidation. Then, it was blended with appropriate amounts of CS to prepare facile and sustainable composite films (CMs). The covalent binding rate of 3-U to SPI was 69 %-76 % by laccase-oxidation. Moreover, 3-U partially stretched the polypeptide chain of SPI, reduced the hydrophobicity of the protein surface, and increased the sulfhydryl content to (0.8-2.6) x 10(5) mol/g. In addition, 1.5%U/SPI/Ag had a wide particle size distribution ranging from 40 nm to 200 nm. The tensile strength of the 50%CMs increased substantially to 29.6 MPa, and the elongation at break reached 15.2 %. Interestingly, the water vapor permeability coefficient of the incorporated 50%CMs came up to 3.65 x 10(13) (g center dot cm)/(cm(2)center dot s center dot Pa). Furthermore, 50%CMs in vitro significantly stimulated the form of ROS in E. coli, led to the fundamental damage to bacteria, and did not induce any significant toxicity in HUVEC cells.