Effects of packaging materials and types on postharvest nutritional quality of mini Pakchoi Brassica chinensis  

作　　者：Wu Shimin Shu Feiya Huang Danfeng 

机构地区：[1]Department of Food Science and Technology,School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China [2]Key Laboratory of Urban Agriculture(South),Ministry of Agriculture,Shanghai 200240,China [3]Department of Plant Science,School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《International Journal of Agricultural and Biological Engineering》2016年第6期207-213,共7页国际农业与生物工程学报（英文）

基　　金：the National High Technology Research and Development Programme(863)of China(No.2013AA103006);the System Construction Project for Green Vegetables from Shanghai Municipal Agricultural Commission,and SJTU Agri-X Funding(No.Agri-X2015007).

摘　　要：The baby leaves of mini Pakchoi Brassica chinensis are gaining popularity due to its pleasant appearance,flavour,tender texture and nutrition.Effects of retail packaging on the nutritional quality of Brassica chinensis at 4℃were studied.Samples were packaged using polyethylene bags(PE-B),polystyrene foam tray covered with polyethylene film(PE-C/PS-T),perforated oriented polypropylene bags(POPP-B)and biaxially oriented polystyrene box(BOPS-B).Weight losses,respiration rate,chlorophyll and carotenoid,vitamin C and nitrate were determined during storage period.After 10 d storage,the weight loss for samples packaged in PE-B was 0.89%,followed by PE-C/PS-T with weight losses of 6%.A significant reduction(>10%)in moisture was observed for the samples packaged in POPP-B and BOPS-B.The variation in respiration rate during storage seemed to form a trend with a sharp decline up to the fourth day.The difference in the reduction of chlorophyll and carotenoid was not significant among the four packages.BOPS-B had a better protective effect on vitamin C loss.The nitrate concentration during storage was within the official limit.

关 键 词：Brassica chinensis PACKAGING vitamin C CHLOROPHYLL CAROTENOID nitrate-nitrogen 

分 类 号：O63[理学—高分子化学]