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Analysis of essential oils from different organs of Scutellaria baicalensis
Shuang-hong Song1, Zhe-zhi Wang
1Key Laboratory of Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China.
Objective:
To evaluate the differences among essential oils from the fresh flowers, stem leaves, roots and seeds of Scutellaria baicalensis.
Methods:
The oils was obtained by hydrodistillation and identified by gas chromatography-mass spectrometry (GC-MS) and the Kovats retention index. The relative contents of the components were determined by the peak-area normalization method adopted in gas chromatography.
Results:
Fifty-three compounds constituting 91.16% of flower oil, forty-eight compounds comprising 88.48% of stem-leaf oil, thirty-nine compounds representing 91. 79% of root oil and thirty-two compounds accounting 84.58% of seed oil have been identified.
Conclusion:
The results showed that the components and relative contents of the essential oils among flowers, stem leaves, roots and seeds have significant differences. Each of them had a great range of potential utilities and a prospect of development.
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