Carbon dots-based reinforced hydrogen-rich water nanocomposite coating for storage quality of fresh-cut pear  

作　　者：Yihao Wang WeiYu Qiu XiaoQi Fang Wenxiang Li Yanan Sun 

机构地区：[1]School of Food Science and Engineering,Qingdao Agricultural University,266109,Qingdao,Shandong,China [2]Qingdao Special Food Research Institute,266109,Qingdao,Shandong,China

出　　处：《Food Bioscience》2023年第3期2897-2906,共10页食品生物科学（英文）

基　　金：financially supported by the National Key R&D Pro-gram of China(2018YFD0700303);the Shandong Province Technology Innovation Guidance Program(66812211118);the Shandong Province Modern Agricultural Industry Technology System(SDAIT-07-08);the Breeding Plan of Shandong Provincial Qingchuang Research Team(Innovation Team of Functional Plant Protein-Based Food),Natural Science Foundation of Shandong Province(ZR2022QC104).

摘　　要：Designing environmentally friendly edible nanocomposite films with antioxidant functions is of great interest in the field of fresh-cut fruits.Herein,Pleurotus eryngii carbon quantum dots(PER-CDs)were prepared from Pleu-rotus eryngii by-products,successfully characterized and added to chitosan(CS)/hydrogen-rich water solution to develop CDs/CS nanocomposite films(CS/PER-CDs),which was successfully applied to the preservation of fresh-cut pears.Thereinto,the fresh-cut pears treated with CS/2%PER-CDs nanocomposite films had minimum weight loss of 3.38%and the best retention of moisture,color,soluble solids and titratable acids after 5 days of storage.Importantly,the fresh-cut pears in the CS/2%PER-CDs treatment group had the lowest relative conductivity(37.53%)and MDA content of 1.94μmol/kg,which could indicate that the CS/2%PER-CDs nanocomposite films maintained good cell membrane integrity of fresh-cut pears.In addition,the CS/2%PER-CDs treatment group effectively reduced the maximum respiration intensity(51.67 mgCO_(2)/Kg⋅h)and ethylene production rate(0.75μg/kg⋅h)of fresh-cut pear.Therefore,PER-CDs can be added into chitosan-based coating film as a functional component to make nanocomposite films and applied in fresh-cut fruits preservation effectively.

关 键 词：Carbon quantum dots Hydrogen-rich water Fresh-cut pear Nanocomposite coating Storage quality 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程] TS206[轻工技术与工程—食品科学与工程]