Journal
CHROMATOGRAPHIA
Volume 75, Issue 7-8, Pages 387-395Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10337-012-2211-y
Keywords
Thermochemolysis; Gas chromatography/mass spectrometry; Alkylphenols; Ginkgo biloba sarcotesta; TMSH
Funding
- Natural Science Foundation of Zhejiang Province [Y307602]
- Key Science and Technology Innovation Team of Zhejiang Province [2011R09002-11]
- Zhejiang University of Technology [1002]
- Opening Foundation of Zhejiang Provincial Top Key Discipline [200908]
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A method to determine alkylphenols in Ginkgo biloba sarcotesta, especially focusing on polyunsaturated ginkgolic acid components, was developed on the basis of thermochemolysis-gas chromatography/mass spectrometry with a DB-23 column in the presence of trimethylsulfonium hydroxide [(CH3)(3)SOH]. By using this technique, powder sample of Ginkgo biloba sarcotesta can be directly analyzed without any tedious and time-consuming pretreatment. On the resulting chromatograms, seven kinds of ginkgolic acids including polyunsaturated ginkgolic acid GA17:2 and two kinds of ginkgols were clearly observed as their methyl derivative. Based on the peak areas, the ginkgolic acid compositions are in good agreement with these obtained by a high-performance liquid chromatography method dedicated to analysis of ginkgolic acid.
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