不同西洋梨品种果实糖酸组分及含量分析  

Analysis of Components and Content of Sugar and Acid in Fruits of Different Pyrus communis L.Varieties

作　　者：郭可欣 孙志娟 李庆余[2] 韩磊 张勇 王彩虹[1] 田义轲[1] 郑晓东 GUO Kexin;SUN Zhijuan;LI Qingyu;HAN Lei;ZHANG Yong;WANG Caihong;TIAN Yike;ZHENG Xiaodong(College of Horticulture,Qingdao Agricultural University,Qingdao 266109,China;Yantai Academy of Agricultural Sciences,Yantai 265500,China)

机构地区：[1]青岛农业大学园艺学院,山东青岛266109 [2]烟台市农业科学研究院,山东烟台265500

出　　处：《青岛农业大学学报（自然科学版）》2024年第2期79-86,115,共9页Journal of Qingdao Agricultural University(Natural Science)

基　　金：国家自然科学基金(32172542)。

摘　　要：为了给梨果实综合评价及产业品种结构调整提供理论依据,以烟台市十个代表性果园三个西洋梨品种(‘巴梨’‘三季梨’和‘红茄梨’)为研究对象,采用高效液相色谱法(HPLC)测定果实中可溶性糖和有机酸的组分及含量。研究结果表明:在三个西洋梨品种中,总糖含量和甜度值最高的是‘红茄梨’,‘三季梨’次之,‘巴梨’的总糖含量最少;三种西洋梨成熟果实可溶性糖积累以葡萄糖和果糖为主,可溶性糖含量由高到低为葡萄糖>果糖>山梨醇>蔗糖;另外,三种西洋梨果实总酸含量差异不显著,有机酸积累以柠檬酸和苹果酸为主,这两种酸占有机酸总量的90%左右;‘红茄梨’甜酸比和糖酸比最高,显著高于‘巴梨’,与‘三季梨’差异不显著。综上所述,‘红茄梨’糖酸风味优异,可作为烟台地区西洋梨产业结构调整的备选推广品种。In order to provide a theoretical basis for the comprehensive evaluation of pear fruits and the adjustment of industrial variety structure,three Pyrus communis L.varieties('Bartlett''Docteur Jules Guyot'and'Red Clapp Favorite')from ten representative orchards in Yantai City were taken as the research objects.The components and content of soluble sugar and organic acid in fruit were determined by high performance liquid chromatography(HPLC).The results showed that'Red Clapp Favorite'had the highest total sugar content and sweetness value among the three pear varieties,followed by'Docteur Jules Guyot',and'Bartlett'had the least total sugar content.The accumulation of soluble sugar in three kinds of pears was mainly glucose and fructose,and the content of soluble sugar was glucose>fructose>sorbitol>sucrose.In addition,there was no significant difference in the total acid content of the three kinds of pear fruits,and the accumulation of organic acids was mainly citric acid and malic acid,which accounted for about 90%of the total organic acids.The sweet-acid ratio and sugar-acid ratio of'Red Clapp Favorite'were the highest,significantly higher than those of'Bartlett',but no significant difference between'Docteur Jules Guyot'and'Red Clapp Favorite'.Together,'Red Clapp Favorite'has excellent sugar and acid flavor,and can be used as an alternative to promote the industrial structure adjustment of pear in Yantai area.

关 键 词：西洋梨 可溶性糖 有机酸 甜酸比 糖酸比 

分 类 号：S661.2[农业科学—果树学]