Analysis and correlationship of chemical components of various walnut ( Juglans regia L.) cultivars

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ORIGINAL PAPER

Analysis and correlationship of chemical components of various walnut (Juglans regia L.) cultivars Yuewen Zheng1 · Shutian Wu1 · Ruohui Wang1 · Yanxia Wu2 · Weizhong Zhang2 · Yongxiang Han1 · Fubin Tang1 · Danyu Shen1 · Yihua Liu1  Received: 12 April 2020 / Accepted: 10 August 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020

Abstract Cultivar is one of the key factors to that influences the nutritional and commercial values of walnuts. However, differences in the comprehensive chemical components among walnut cultivars and their internal formation mechanism are rarely reported. In this study, 49 chemical components of 10 main walnut cultivars from Shanxi Province, China were investigated. Polyphenols, flavonoids and vitamin E were especially rich with the contents of 32.20 mg/g, 16.25 mg/g and 42.37 mg/g, respectively. Highly positive correlations existed among amino acids (r > 0.77, p