文献类型：期刊文献

英文题名：Characterization of iron walnut in different regions of China based on phytochemical composition

作者：Shen, Danyu[1,2] Wu, Shutian[1,2] Zheng, Yuewen[1] Han, Yongxiang[1] Ni, Zhanglin[1] Li, Shiliang[1] Tang, Fubin[1] Mo, Runhong[1] Liu, Yihua[1]

第一作者：Shen, Danyu;沈丹玉

通信作者：Mo, RH[1];Liu, YH[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Peoples R China;[2]Nanjing Forestry Univ, Nanjing 210037, Peoples R China

年份：2021

卷号：58

期号：4

起止页码：1358-1367

外文期刊名：JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE

收录：;EI(收录号：20202908953616);Scopus(收录号：2-s2.0-85087934052);WOS:【SCI-EXPANDED(收录号:WOS:000555503200003)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2017QC002).

语种：英文

外文关键词：Iron walnut; Phytochemical fingerprint; Geographical origin; Random forests

摘要：Little is known about the phytochemical composition of iron walnuts. Differences in the geographical origin of iron walnuts associated with economic benefits should also be examined. In this study, the phytochemical composition (fatty acids, Vitamin E, total polyphenols and flavonoids, amino acids, and minerals) of iron walnuts in China was investigated. The results showed that there were significant differences (p < 0.05) in the phytochemical composition of iron walnut oils and flours from different regions. Positive (r > 0.5,p < 0.05) and negative (r < - 0.5,p < 0.05) correlations were found between amino acids/minerals and amino acids/oleic acid, with the highest correlation coefficient (r = 0.742,p < 0.05) between Cu and tyrosine. In addition, based on the 12 phytochemical fingerprints selected by random forest, a geographical-origin identification model for iron walnuts was established, with a corresponding correct classification rate of 96.6%. The top three phytochemical fingerprints for the geographical-origin identification of iron walnut were microelements, macroelements, and antioxidant composition, with contribution rates of 61.7%, 18.1%, and 9.9%, respectively.