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Gas chromatography-mass spectrometry coupled with pseudo-Sadtler retention indices, for the identification of components in the essential oil of Curcuma longa L.
Authors:R Richmond  E Pombo-Villar
Institution:

a Structural and Analytical Chemistry Group, Preclinical Research Department, Sandoz Pharma AG, CH-4002, Basel, Switzerland

b Central Nervous System Group, Preclinical Research Department, Sandoz Pharma AG, CH-4002, Basel, Switzerland

Abstract:Gas chromatography-mass spectrometry was applied to the cyclohexane extract of Curcuma longa L. The chromatographic conditions generated retention indices very close i.e., greater than 99.9%, to those reported for structures in the Sadtler Standard Gas Chromatography Retention Index Library. In addition to the extensively reported sesquiterpene ketones, this essential oil extract contained a series of saturated and unsaturated fatty acids. Wiley mass spectra library matching for the free fatty acids, their trimethylsilyl esters and methyl esters narrowed their identity down to a few candidates. Combining this information with the retention indices of the fatty acid methyl esters in the Sadtler library allowed the identification of some of the double bond positions.
Keywords:Curcuma longa  Sequiterpene ketones  Fatty acid esters  Fatty acids  Essential oils
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