贮前氯化钙处理对李果实冷害及生理生化的影响  

Effect of prestorage calcium chloride treatment on chilling injury and physiology and biochemistry in plum fruit

作　　者：王艳颖[1,2] 胡文忠[1,2] 田密霞[1,2] 姜爱丽[1,2] 刘程惠[1,2] 

机构地区：[1]大连民族学院生命科学学院,辽宁大连116600 [2]生物化学工程国家民委-教育部重点实验室,辽宁大连116600

出　　处：《食品工业科技》2011年第9期365-368,442,共5页Science and Technology of Food Industry

基　　金：国家科技支撑计划子课题(2006BAD22B02);国家自然科学基金项目(30771508/C02021005;30972038/C110601)

摘　　要：为探索减轻李果实冷害的新途径,以串红李子为试材,研究了不同浓度的氯化钙处理对低温下贮藏的李果实冷害及生理生化的影响。结果表明,对照果在冷藏12d后,a*值、b*值、相对电导率、可溶性固形物含量、呼吸强度都呈现上升趋势,果实硬度、乙烯释放量快速下降,冷害指数逐渐增加,说明此时冷害已经发生。而经氯化钙处理的果实,硬度、外观、冷害指数明显低于对照,呼吸强度、乙烯释放量受到一定的抑制,L*值降低、a*值增大,贮藏初期的着色指数高于对照,但只有2%氯化钙处理的李果实可溶性固形物含量、相对电导率前期较低后期高于其它果,内部冷害指数明显低于对照,说明2%氯化钙处理从外观上明显地抑制了李果实冷害的发生,而综合内外两种冷害指数来看,只有2%氯化钙处理抑制冷害的效果较好,保持了李果实较好的贮藏品质。In order to develop new methods to reduce the occurrence of chilling injury for plum fruit,effect of different concentrations of calcium chloride treatment on chilling injury and the physiology and biochemistry were investigated in plum fruits during low temperature storage.The results showed that a＊,b＊,the relative conductivity,the content of soluble solids and the respiration rate increased,fruit hardness and ethylene production declined rapidly,the index of chilling injury increased gradually when the control fruits stored at low temperature after 12d,it showed that chilling injury had occurred at this time.After plum fruit was treated by calcium chloride,fruit hardness and the out index of chilling injury were lower than the control fruits obviously,the respiration rate and ethylene production were inhibited mostly,L＊ decreased,a＊ increased,the index of pigmentataion was higher than the control fruits during the earlyer storage,but the content of soluble solids and the relative conductivity were lower prophase and higher than the other fruits anaphase,the interior index of chilling injury was lower than the control fruits obviously for 2% calcium chloride treatment,it showed that 2% calcium chloride treatment inhibited chilling injury of plum in appearance,but the 2% calcium chloride treatment inhibited chilling injury effectively and maintained better storage quality of plum fruit in both index of chilling injury.

关 键 词：氯化钙 李子 冷害 生理生化 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]