Identification of volatile sulfur-containing compounds and the precursor of dimethyl sulfide in cold-pressed rapeseed oil by GC-SCD and UPLC-MS/MS

被引：42

作者：

Yu, Pei ^{[1
,2
]}

Yang, Yini ^{[1
,2
]}

Sun, Jinyuan ^{[3
]}

Jia, Xiao ^{[1
,2
]}

Zheng, Chang ^{[1
,2
]}

Zhou, Qi ^{[1
,2
]}

Huang, Fenghong ^{[1
,2
]}

机构：

[1] Chinese Acad Agr Sci, Oil Crops Res Inst, Hubei Key Lab Lipid Chem & Nutr, Wuhan 430062, Peoples R China

[2] Minist Agr, Oil Crops & Lipids Proc Technol Natl & Local Join, Key Lab Oilseeds Proc, Wuhan 430062, Peoples R China

[3] Beijing Technol & Business Univ BTBU, Beijing Key Lab Flavor Chem, Beijing 100048, Peoples R China

来源：

FOOD CHEMISTRY | 2022年 / 367卷

基金：

中国国家自然科学基金;

关键词：

Cold-pressed rapeseed oil; Volatile sulfur-containing compounds; Sulfur chemiluminescence detection; Dimethyl sulfide; S-methylmethionine; Ultra-performance liquid chromatography  tandem mass-spectrometry; GAS CHROMATOGRAPHY-OLFACTOMETRY; KEY ODORANTS; S-METHYLMETHIONINE; BRASSICA-NAPUS; OFF-FLAVOR; AROMA; WINE; QUANTITATION;

D O I：

10.1016/j.foodchem.2021.130741

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Volatile sulfur-containing compounds (VSCs) provide an important contribution to foods due to their special odors. In this study, VSCs in 21 cold-pressed rapeseed oils (CROs) from 9 regions in China were extracted and separated by headspace solid-phase microextraction combined with gas chromatography coupled with sulfur chemiluminescence detection. 19 VSCs were identified by authentic standards, and the total concentration of VSCs in all CROs ranged from 49.0 to 18129 mu g/kg. Dimethyl sulfide (DMS), with its high odor activity value (7-14574), was the most significant aroma contributor to the CROs. Furthermore, S-methylmethionine (SMM) in rapeseed was first affirmed by ultra-performance liquid chromatography-tandem mass spectrometry and isotope quantitation. The positive correlation coefficient between DMS and SMM was 0.793 (p < 0.05), which confirmed SMM as a crucial precursor of DMS in CROs. This study provided a theoretical basis for selecting rapeseed materials by the distribution of essential VSCs and the source of DMS.

引用

页数：10

共 39 条

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