数字农科院2.0

Characterization And Discrimination Of Chinese M.arinated Pork Hocks By V olatile Compound Profiling Using Solid Phase Microextraction Gas Chromatography-Mass Spectrometry/Olfactometry, Electronic Nose And Chemometrics

文献类型： 外文期刊

作者： Han, D; Mi, S; Zhang, CH; Li, J; Song, HL; Fauconnier, ML; Tyteca, E

作者机构：

关键词： characterization; discrimination; Chinese marinated pork hocks; odour activity value; key odour-active compounds; potential flavour markers

期刊名称： MOLECULES

ISSN： 1420-3049

年卷期： 2019 年 24 卷 7 期

页码：

收录情况： JCR（2021版）

摘要： The primary aim of this study was to investigate volatile constituents for the differentiation of Chinese marinated pork hocks from four local brands, Dahongmen (DHM), Daoxiangcun (DXC), Henghuitong (HHT) and Tianfuhao (TFH). To this end the volatile constituents were evaluated by gas chromatography-mass spectrometry/olfactometry (GC-MS/O), electronic nose (E-nose) and chemometrics. A total of 62 volatile compounds were identified and quantified in all pork hocks, and 24 of them were considered as odour-active compounds because their odour activity values (OAVs) were greater than 1. Hexanal (OAV at 3.6-20.3), octanal (OAV at 30.3-47.5), nonanal (OAV at 68.6-166.3), 1,8-cineole (OAV at 36.4-133.3), anethole (OAV at 5.9-28.3) and 2-pentylfuran (OAV at 3.5-29.7) were the key odour-active compounds contributing to the integral flavour of the marinated pork hocks. According to principal component analysis (PCA) and partial least squares-discriminant analysis (PLS-DA) of GC-MS/O and E-nose data, the results showed that the marinated pork hocks were clearly separated into three groups: DHM, HHT, and DXC-TFH. Nine odour-active compounds, heptanal, nonanal, 3-carene, d-limonene, beta-phellandrene, p-cymene, eugenol, 2-ethylfuran and 2-pentylfuran, were determined to represent potential flavour markers for the discrimination of marinated pork hocks. This study indicated the feasibility of using GC-MS/O coupled with the E-nose method for the differentiation of the volatile profile in different brands of marinated pork hocks.

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