文献类型：期刊文献

英文题名：Comparison analysis of widely-targeted metabolomics revealed the variation of potential astringent ingredients and their dynamic accumulation in the seed coats of both Carya cathayensis and Carya illinoinensis

作者：Li, Yan[1] Wang, Jianhua[1] Wang, Ketao[1] Lyu, Shiheng[1] Ren, Liying[1] Huang, Chunying[1] Pei, Dong[2] Xing, Yulin[1] Wang, Yige[1] Xu, Yifan[1] Li, Peipei[1] Xi, Jianwei[1] Si, Xiaolin[1] Ye, Hongyu[1] Huang, Jianqin[1]

第一作者：Li, Yan

机构：[1] State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Zhejiang, 311300, China; [2] State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China

年份：2022

卷号：374

外文期刊名：Food Chemistry

收录：EI(收录号：20215111332645);Scopus(收录号：2-s2.0-85121150875)

语种：英文

外文关键词：Organic acids - Gene expression - Tannins

摘要：Pecan and hickory nuts are two of consumers’ favorite ones. Pecan seeds can be eaten fresh, while hickory ones must remove astringency before eating. Here, we reported that total phenols, flavonoids and condensed tannins of hickory seeds were reduced after de-astringent treatments. They gradually increased with development, showing higher levels in hickory seed coat at mid-late periods than that in pecan's. Widely-targeted metabonomics analysis of developing testa identified 424 kinds of components, including 101, 38, 58, 27 classes of flavonoids, tannins, phenolic acids, organic acids and others, showing 16 different changing trends. Notably, most kinds of flavonoids, hydrolysable tannins and phenolic acids at maturity were more than that of pecan's, while oligomeric condensed tannins were opposite. Gene expression analysis provided further explanations for their dynamic accumulation. These results unraveled potential astringent components in hickory testa and preliminary molecular mechanisms of their dynamic changes, offering theoretical basis for the targeted de-astringency. ? 2021 Elsevier Ltd