GC-MS Analysis of Volatile Components in Partridge Tea (Mallotus obongifolius)

in HortScience

Partridge tea is one of the famous local herbal teas of Hainan Island, China. In the present study, headspace solid-phase microextraction and gas chromatography-mass spectrometry were combined to determine and analyze the volatile components in the red and green leaves of partridge tea. Seventeen volatile components were identified in the red young leaves. The olefins, alkanes, and alcohols accounted for 71.24%, 1.1%, and 0.54%, among which the main components were caryophyllene (22.50%), humulene (18.73%), and α-guaiene (8.78%), respectively. Twenty volatile components were identified from red mature leaves, including 34.74% olefins, 6.14% esters, and 3.11% acids. Eighteen volatile components were identified from green young leaves, among which olefins (70.52%), alkanes (4.32%), and alcohol (0.89%) were the major components. Nineteen volatile components were identified from green mature leaves, among which the olefins, esters, and acids were the major components with the contents of 46.04%, 6.38%, and 1.37%, respectively. Results showed that the major volatile components of partridge tea were olefins, in which caryophyllene was the most abundant. The contents of volatile components between red leaves and green leaves had notable differences, which might be useful for germplasm identification of partridge tea.

Contributor Notes

This work was funded by the National Natural Science Foundation of China (no. 31560108). JLJ designed and supervised the experiments. SCQ and YW performed data analysis, and SCQ wrote the manuscript. AK and YW revised the manuscript. All the authors read and approved the final manuscript.

Corresponding authors. E-mail: ljl0728@126.com or Elaeis@catas.cn.

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    Varieties of partridge tea. ML = mature leaves; YL = young leaves.

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    Total ion chromatograms of volatile components in (A) red young leaves, (B) red mature leaves, (C) green young leaves, and (D) green mature leaves.

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    Classification diagram of volatile components.

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    The relative proportion of 25 compounds. (A) Red leaves. (B) Green leaves. (C) Young leaves. (D) Mature leaves.

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