壳聚糖和噻苯咪唑处理对晋枣鲜果贮藏品质的影响  

Effects of chitosan and thiabendazole on the storage quality of fresh Jin jujube

作　　者：杨涛 原双进 张润光[1] 戚登斐 韩海涛 张有林[1] YANG Tao;YUAN Shuangjin;ZHANG Runguang;QI Dengfei;HAN Haitao;ZHANG Youlin(College of Food Engineering and Nutritional Science,Shaanxi Normal University,Xi'an 710119,China;Shaanxi Forestry Technology Extension Station,Xi'an 710082,China)

机构地区：[1]陕西师范大学食品工程与营养科学学院,陕西西安710119 [2]陕西省林业技术推广总站,陕西西安710082

出　　处：《食品与发酵工业》2019年第8期109-114,共6页Food and Fermentation Industries

基　　金：国家林业局项目"冬枣鲜果保藏技术示范与推广";陕西省农业专项资金项目"陕西特色果品贮藏保鲜关键技术集成与示"

摘　　要：研究壳聚糖(chitosan,CTS)涂膜处理和噻苯咪唑(thiabendazole,TBZ)熏蒸处理对晋枣鲜果采后贮藏品质的影响。将具有果面3/4红色成熟度的新鲜晋枣分别用质量浓度2. 0 g/L的壳聚糖溶液进行涂膜和含噻苯咪唑4. 5%(质量分数)的烟剂以5 g/m3熏蒸3 h,后置于-1～0℃冷库中贮藏,定期测量相对电导率、果实硬度、丙二醛、叶绿素、可滴定酸、抗坏血酸含量和失重率、好果率,贮后进行感官评价。结果表明,壳聚糖涂膜和噻苯咪唑熏蒸处理均能够降低果实细胞膜相对渗透率,抑制丙二醛的积累,维持较高的果实硬度,保持可滴定酸和抗坏血酸含量,减缓叶绿素含量的下降,减少果实失重和腐烂,壳聚糖涂膜处理保鲜效果优于噻苯咪唑熏蒸处理。贮藏100 d时,壳聚糖涂膜处理好果率为94. 6%,果实色泽鲜艳,口感俱佳。The effects of chitosan coating and thiabendazole fumigation on postharvest storage quality of fresh Jin jujube were studied.Fresh and ripe Jin jujube with 3/4 of the fruit surface appeared red were either coated with 2 g/L chitosan solution or fumigated with smoke agents with 4.5% thiabendazole at 5 g/m^3 for 3 h.Samples were stored at -1-0 ℃.Their relative conductivity,hardness,contents of malondialdehyde,chlorophyll,titratable acid,and ascorbic acid,weight loss rate,and good fruit rate were measured regularly.Sensory evaluation was carried out after storage.The results showed that both chitosan coating and thiabendazole fumigation could reduce the relative permeability of cell membrane,inhibit malondialdehyde accumulation,maintain relatively high hardness of the fruit,maintain titratable acid and ascorbic acid contents in the fruit,retarding the decline of chlorophyll content,and reduce the weight loss of the fruit as well as rotten fruits.Chitosan coating had better fresh-keeping effects than thiabendazole fumigation.After 100 days of storage,94.6% fruit treated with chitosan coating were good,and the fruit had bright color and delicious taste.

关 键 词：晋枣鲜果 壳聚糖 噻苯咪唑 贮藏保鲜 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]