套袋对翠冠梨果实外观色泽及糖、酸含量的影响  

Effects of Bagging on the Appearance Color and Quality of ‘Cuiguan’Pear

作　　者：盛宝龙[1] 蔺经[1] 程进[2] 杨青松[1] 李晓刚[1] 李慧[1] 王中华[1] 付蓉[1] 

机构地区：[1]江苏省农业科学院园艺研究所,江苏南京210014 [2]江苏省海安县大公镇农业技术推广站,江苏海安226623

出　　处：《江西农业大学学报》2010年第4期705-709,728,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家农业科技成果转化项目(2008GB2C100100);国家948项目(2009-Z18);江苏省自主创新项目(CX(09)611);江苏省农业三项工程(SX(2009)044)

摘　　要：以‘翠冠’梨为试材,采用CIELAB表色系统和液相色谱测定,比较了套蜡质双层袋(B-1)、防水胶双层袋(B-2)、纸+膜双层袋(B-3)、腊质+防水胶双层袋(B-4)和普通双层袋(B-5)和未套袋(CK)的果实外观色泽和糖、酸含量的变化。结果表明,套袋使果皮的L值和a值增大,b值减小,颜色变浅。套袋能明显减小果锈指数,5种纸袋处理效果为B-1>B-2>B-3>B-4>B-5。套袋果实糖含量降低,果实中的糖以蔗糖和山梨醇为主,其次为果糖和葡萄糖。各套袋处理总糖含量大小顺序为B-1>B-3>B-4>B-2>B-5;套袋果实酸度比未套袋增加,果实中酸含量以苹果酸和柠檬酸为主,其次草酸和奎尼酸。各套袋处理总酸含量大小顺序为B-4>B-3>B-5>B-2>B-1。综合比较外观及品质分析可以得出,要生产外观优良的‘翠冠’梨,外观色差△Eab指标应大于3.0,5种纸袋果实品质以套B-1纸袋的最好,其次为B-4>B-2>B-3>B-5。The fruit of ‘Cuiguan’pear were treated by five different bagging methods,namely,stencil double-layer bag（B-1） ,waterproof glue double-layer bag（B-2） ,plastic pellicleout double-layer bag（B-3） ,stencil and waterproof glue double-layer bag（B-4） ,general double-layer bag（B-5） and non-bagging （CK） ,and the fruit color,the Brix,and acid content changes were studied using CIELAB color variables and liquid chromatography.The result showed that bagging treatment improved L and a value,decreased b value of peels,made the color shallow and it also decreased the fruit rust index,the order of the effect of decreasing of the index of fruit rust of the five kinds of bags was B-1 B-2 B-3 B-4 B-5.Bagging reduced the fruit Brix and increased acid.In fruit sugar,sucrose and sorbitol were principal,followed by fructose and glucose;the order of the contents of the total sugars treated with the five kinds of bags was B-1 B-3 B-4 B-2 B-5;in the fruit acids,malic acid and citric acid were principal,followed by oxalic acid and quinic acid;the order of the contents of the total acids treated with the five kinds of bags was B-4 B-3 B-5 B-2 B-1.In general,to produce good appearance‘Cuiguan’pears,the color △Eab indicators should be more than 3.0,the order of the indexes of fruit appearance quality treated with the five kinds of bags was B-1 B-4 B-2 B-3 B-5.

关 键 词：翠冠梨 套袋 外观 糖 酸 品质 

分 类 号：S661.2[农业科学—果树学]