Characteristic Volatile Fingerprints and Odor Activity Values in Different Citrus-Tea by HS-GC-IMS and HS-SPME-GC-MS

文献类型： 外文期刊

第一作者： Qi, Heting

作者： Qi, Heting;Ding, Shenghua;Pan, Zhaoping;Li, Xiang;Fu, Fuhua;Qi, Heting;Ding, Shenghua;Pan, Zhaoping;Li, Xiang;Fu, Fuhua;Qi, Heting;Ding, Shenghua;Pan, Zhaoping;Li, Xiang;Fu, Fuhua

作者机构：

关键词： citrus-tea; volatile components; HS-GC-IMS; HS-SPME-GC-MS; orthogonal partial least squares discrimination analysis; OAV

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN：

年卷期： 2020 年 25 卷 24 期

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收录情况： SCI

摘要： Citrus tea is an emerging tea drink produced from tea and the pericarp of citrus, which consumers have increasingly favored due to its potential health effects and unique flavor. This study aimed to simultaneously combine the characteristic volatile fingerprints with the odor activity values (OAVs) of different citrus teas for the first time by headspace gas chromatography-ion mobility spectrometry (HS-GC-IMS) and headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS). Results showed that the establishment of a citrus tea flavor fingerprint based on HS-GC-IMS data can provide an effective means for the rapid identification and traceability of different citrus varieties. Moreover, 68 volatile compounds (OAV > 1) were identified by HS-SPME-GC-MS, which reflected the contribution of aroma compounds to the characteristic flavor of samples. Amongst them, the contribution of linalool with sweet flower fragrance was the highest. Odorants such as decanal, beta-lonone, beta-ionone, beta-myrcene and D-limonene also contributed significantly to all samples. According to principal component analysis, the samples from different citrus teas were significantly separated. Visualization analysis based on Pearson correlation coefficients suggested that the correlation between key compounds was clarified. A comprehensive evaluation of the aroma of citrus tea will guide citrus tea flavor quality control and mass production.

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