Title: Analysis of fruit sugar and acid compositions in the aril of different longan cultivars
Abstract: Fruits of 12 longan (Dimocarpus longan Lour.) cultivars grown in Guangdong and Fujian provinces were used as materials for studying the fruit quality and sugar and acid compositions in aril. Results showed that the fruit weight, content of total soluble solids and edible pulp rate of tested cultivars ranged from 6.1 to 15.1 g, 12.2 to 23.0% and 56.2 to 71.4% respectively. Fructose, glucose and sucrose were the predominant sugars in the aril. Different cultivars showed remarkable difference in the sugar compositions. They could be classified into 3 types based on their sugar composition: 1) Sucrose prevalent type, including cvs. Shuangmamu, Zihuamu, Chuliang and Shalimu, contained more sucrose than monosaccharides (fructose and glucose); 2) Monosaccharide prevalent type, including cvs. Hualuguangyan and Luosanmu, accumulated more monosaccharides than sucrose; and 3) Intermediate type, including cvs. Shixia, Dongbi, Shuiyan, Honghe, Jimaoyan and Zaoshu1hao. The organic acids in the aril ranged from 1.46 to 3.46 mg/g and the main acids were malic acid, oxaloacetic acid, α-ketoglutaric acid, oxalic acid, citric acid, tartaric acid and quinic acid. There was a relative high content of reduced ascorbic acid (vitamin C)(12.4% of total acids) in the aril. It was the lowest in cultivar Chuliang (0.13 mg/g) and highest in Luosanmu (0.65 mg/g).
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 4
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot