- Author: DANG Meile, ZHANG Xu, ZHU Zhenzhen, LIU Junling, GUO Yanping, ZHAO Zhengyang
- Keywords: Apple; Sugar and organic acid; Polyphenols; Mineral substance;
- DOI: 10.13925/j.cnki.gsxb.20190200
- Received date:
- Accepted date:
- Online date:
PDF （） Abstract（）
Abstract:【Objective】‘Ruiyang'‘Ruixue'and their parents‘Qin Guan'‘Fuji'and‘Cripps Pink'were used as experimental materials to analyze the differences in the main nutrients in fruit, and the effects of cold storage on the main nutritional components were studied, in order to improve the evaluation system and popularize new apple varieties.【Methods】The composition and contents of major sugars, organic acids, polyphenols and vitamins in apple fruits were measured by high-performance liquid chromatography(HPLC) and mineral substances were determined by atomic absorption spectrophotometry(AAS).【Results】Our results showed that the compositions of the main sugars, organic acids, polyphenols and minerals in‘Ruiyang'‘Ruixue'and their parents were quite similar, whereas their contents differed significantly. The total amount of polyphenols in‘Ruiyang'peel was significantly higher than in their parents‘Fuji'and‘Qinguan'. In addition, the phloridzin and chlorogenic acid contents in‘Ruiyang'were significantly higher than‘Fuji'; the polyphenols in‘Ruixue'was lower than in‘Cripps Pink'but similar to that of‘Fuji'. Besides, the epicatechin and catechin contents in‘Ruixue'were significantly higher those in‘Fuji'. The contents of K, Ca and Mg in the five cultivars were relatively high, followed by Zn and Fe. The content of Ca in‘Ruiyang'fruit was close to that in‘Fuji',which was significantly higher than that in‘Qinguan', and the contents of Ca and Zn in‘Ruixue'were significantly higher than in‘Fuji'. During cold storage, the changes on sugars, Organic acids, vitamins,minerals and polyphenols were similar, but slightly different among different apple varieties.【Conclusion】The analysis of sugars, Organic acids, vitamins, minerals and polyphenols in the new apple varieties,‘Ruiyang'and‘Ruixue'and their parents‘Qinguan',‘Fuji'and‘Cripps Pink', indicated that the polyphenol and minerals in‘Ruiyang'fruit are obviously higher than those in‘Qinguan'and close to those in‘Fuji', and‘Ruixue'has combined many advantages of‘Cripps Pink'with rich malic acid, vitamin C and mineral Ca. At the same time, during cold storage, the changes in sugars, acids, polyphenols and vitamins in the five varieties were similar with slight difference among different varieties. The optimum palatable period of‘Ruiyang'fruit was about 60 days of cold storage, and that of‘Ruixue'about 90 days.