Determination of free steroidal compounds in vegetable oils by comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry

文献类型： 外文期刊

第一作者： Xu, Baocheng

作者： Xu, Baocheng;Zhang, Liangxiao;Ma, Fei;Zhang, Wen;Wang, Xiupin;Zhang, Qi;Li, Peiwu;Xu, Baocheng;Luo, Denglin;Ma, Hongyan;Zhang, Qi;Zhang, Qi;Li, Peiwu;Zhang, Liangxiao;Ma, Fei;Zhang, Wen;Wang, Xiupin;Li, Peiwu;Zhang, Liangxiao;Ma, Fei;Zhang, Wen;Wang, Xiupin;Li, Peiwu

作者机构：

关键词： Free steroidal compounds;Vegetable oils;GC x GC-TOF/MS;Analysis

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2018 年 245 卷

页码：

收录情况： SCI

摘要： A method based on comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometry (GC x GC-TOF/MS) was developed to analyze steroidal compounds in vegetable oils, which could provide better separation and higher sensitivity than conventional one dimensional gas chromatography, and allowed determination of 31 sterols and triterpene alcohols in one injection. Furthermore, the approach also permitted separation and detection of small amounts of other compounds (may be steroidal compounds whose molecular structures have not been confirmed), which were obscured in the lower-resolution single-column technique. With the help of the GC x GC system, a more elaborate and complete information regarding the distributions and concentrations of free phytosterols and triterpene alcohols in safflower seed oil, soybean oil, rapeseed oil, sunflower seed oil and peanut oil were obtained. The proposed method could potentially open a new opportunity for the more in-depth knowledge of the steroidal compounds of vegetable oils.

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