Nontargeted Metabolomics for Phenolic and Polyhydroxy Compounds Profile of Pepper ( L.) Products Based on LC-MS/MS Analysis

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2018 Aug 12

PMID 30096911

Citations 3

Authors

Fenglin Gu

Guiping Wu

Yiming Fang

Hongying Zhu

Affiliations

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Abstract

In the present study, nontargeted metabolomics was used to screen the phenolic and polyhydroxy compounds in pepper products. A total of 186 phenolic and polyhydroxy compounds, including anthocyanins, proanthocyanidins, catechin derivatives, flavanones, flavones, flavonols, isoflavones and 3---coumaroyl quinic acid -hexoside, quinic acid (polyhydroxy compounds), etc. For the selected 50 types of phenolic compound, except malvidin 3,5-diglucoside (malvin), l-epicatechin and 4'-hydroxy-5,7-dimethoxyflavanone, other compound contents were present in high contents in freeze-dried pepper berries, and pinocembrin was relatively abundant in two kinds of pepper products. The score plots of principal component analysis indicated that the pepper samples can be classified into four groups on the basis of the type pepper processing. This study provided a comprehensive profile of the phenolic and polyhydroxy compounds of different pepper products and partly clarified the factors responsible for different metabolite profiles in ongoing studies and the changes of phenolic compounds for the browning mechanism of black pepper.

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