文献类型：期刊文献

英文题名：Detoxified and antimicrobial-enhanced olive mill wastewater phenols capping ZnO nanoparticles incorporated with carboxymethyl cellulose for fresh strawberry preservation

作者：Qi, Zhiwen[1,3] Xue, Xingying[1,3] Xu, Xuefeng[2] Zhou, Hao[1,3] Li, Wenjun[1,3] Yang, Guliang[4] Xie, Pujun[1,3]

第一作者：齐志文;Qi, Zhiwen

通信作者：Qi, ZW[1];Xie, PJ[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]Hainan Vocat Univ Sci & Technol, Sch Chem & Mat Engn, Key Lab Med & Edible Plants Resources Hainan Prov, Haikou 571126, Hainan, Peoples R China;[3]Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210042, Jiangsu, Peoples R China;[4]Cent South Univ Forestry & Technol, Food Sci & Engn Coll, Natl Engn Lab Rice & Prod Proc, Changsha 410004, Hunan, Peoples R China

年份：2022

卷号：188

外文期刊名：POSTHARVEST BIOLOGY AND TECHNOLOGY

收录：;Scopus(收录号：2-s2.0-85125658975);WOS:【SCI-EXPANDED(收录号:WOS:000870496300002)】；

基金：The study was supported by the Fundamental Research Funding of CAF (CAFYBB2020SY036), and the National Natural Science Foundation of China (32101472).

语种：英文

外文关键词：Olive mill wastewater; Phenols; ZnO NPs; Detoxified function; Antimicrobial-enhanced activity; Strawberry preservation

摘要：The underutilized by-products of hydrophilicity olive mill wastewater phenols (OPs) have great antimicrobial potential. ZnO NPs is one of most wildly used nano material with anti-bacterial function as well. This study aimed to prepare the detoxified and antimicrobial-enhanced OPs capping ZnO nanoparticles (OPs-ZnO NPs) containing metal core of ZnO NPs and organic shell of OPs, respectively. The OPs-ZnO NPs was chemically coordinated/chelated driven by Lewis bases (NaOH) in aqueous solution. The results obtained by SEM and TEM showed that those irregular sphere OPs-ZnO NPs were ranged from 58 to 92 nm, with an OPs caption of 35.40% (w/w). Importantly, the in vitro results showed that the strategy of capping OPs in ZnO NPs decreased the toxicity of ZnO NPs (< 0.02 g/L). Moreover, OPs-ZnO NPs presented a higher stability in simulated gastrointestinal digestion (Zn2+ < 0.07 g/L after 12 h). The results also showed that the protective coating of OPs-ZnO NPs and OPs-ZnO NPs/CMC (carboxymethyl cellulose) enhanced the antimicrobial activity of Escherichia coli, Staphylococcus aureus and Aspergillus niger. Furthermore, the coating of OPs-ZnO NPs/CMC decreased the weight loss and the rotting ratio of fresh strawberry, and ultimately prolonged its shelf-life at least 4 days under 25 degrees C. Therefore, this study provided a biosafety strategy for the preparation of detoxified and antimicrobial enhanced OPs-ZnO NPs and its CMC protective coating for fresh produce throughout storage.