热带亚热带植物学报2008，Vol.16Issue(3)：236-243,8.
枇杷果肉有机酸组分及有机酸在果实内的分布
Organic Acid Composition in the Pulp of Loquat (Eriobotrya japonica Lindl.) and Distribution in Fruits
摘要
Abstract
Organic acids from the ripe pulp of 18 loquat (Eriobotrya japonica Lindl.) cultivars ('Xiaomaopipa','Jiajiao', 'Zhuonan 1', 'Jiefangzhong', 'Fuyang', 'Moriowase', 'Huabao 2', 'Xiangzhong 10', 'Baihua','Toi', 'Duobao 2', 'Wugongbai', 'Luoyangchin', 'Mogi', 'Zaozhong 6', 'Ba ili', 'Tantou 4', 'Changhong3') and their distribution in the ripe fruit of 2 cultivars ('Jiefangzhong' and 'Zaozhong 6' ) were determined byhigh-performance ion-exchange chromatography (HPIC). Eight organic acids (malic, quinic, citric, iso-citric, α-ketoglutaric, fumaric, oxaloacetic and tartaric acids) were identified in ripe pulp, while trace quantities of ferulic,cis-aconitic and β-coumaric acids were identified in several cultivars. The predominant organic acid of ripe pulp ofmost cultivars was malic acid, with an average content of 4 399 mg kg-1 FW for all cultivars, accounting for62.7% of the total acids. Quinic acid was the second in abundance, with an average content of 2 042 mg kg-1 FW,accounting for 29.1% of the total acids. Other acids ranged from trace to 3.0% of the total acids. Considerablevariations in titratable acidity and organic acid content exist among cultivars. Based on titratable acidity, 18 culti-vars could be separated into 5 groups by clustering analysis: very high acidity ('Xiaomaopipa'), high acidity('Jiajiao', 'Zhuonan 1 ', 'Jiefangzhong' and 'Fuyang' ), medium acidity ('Moriowase', 'Huabao 2', 'Xiang-zhong 10', 'Baihua', 'Toi', 'Duobao 2 '), low acidity ('Wugongbai', 'Luoyangchin ', 'Mogi' and 'Zaozhong 6' ), and very low acidity ('Baili', 'Tantou 4' and 'Changhong 3' ). No significant difference wasfound in the absolute amounts of total acids and titratable acidity between pulp and skins, while the amounts of to-tal acids and titratable acidity in seeds was far lower than those in pulp and skins. The major organic acids identi-fied in skins and seeds were malic and quinic acids. In skins, the content of malic acid was far higher than quinicacid, but in seeds it was slightly lower than quinic acid. In addition, malic acid and quinic acid content in seedswas far lower than those in pulp and skins.关键词
枇杷/果实/苹果酸/有机酸组分/果肉/奎尼酸/种子/果皮Key words
Loquat/Fruit/Malic acid/Organic acid composition/Pulp/Quinic acid/Seed/Skin分类
农业科技引用本文复制引用
陈发兴,刘星辉,陈立松..枇杷果肉有机酸组分及有机酸在果实内的分布[J].热带亚热带植物学报,2008,16(3):236-243,8.基金项目
The National Natural Science Foundation of China (No. 30571292) （No. 30571292）
Fujian Provincial Natural Science Foundation of FujianProvince, China (No. B0310008 ) （No. B0310008 ）
Sciontific Foundation from Fujian Provincial Department of Education, China (No. J.AO5231) （No. J.AO5231）
