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Essential oil analysis of Nepeta teydea Webb. & Berth

✍ Scribed by Arturo Velasco-Negueruela; Maria Jose Perez-Alonso; Ana Buades Rodriquez

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
227 KB
Volume
4
Category
Article
ISSN
0882-5734

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✦ Synopsis

The volatile oil of Nepeta teydea Webb. & Berth., has been analysed by gas chromatography (GC) and infrared spectroscopy (IR). The essential oil derived from the leaves of Nepeta teydea harvested prior to flowering is characterized by a high content of 4acu,7~~,7acu-nepetalactone (89.54%) and by a much lower percentage of other components. Whereas oil extracted from the leaves and flowers collected once flowering had commenced contains as main components: P-pinene (7.87%), 1,8-cineole + limonene (14.67%), camphor (5.94%), cu-terpineol (12.64%) and smaller amounts of nepatalactone diasteroisomers as well as nepetalic acid and 5,9dehydronepetalactone. The tendency of nepetalactone to hydrolyse is also mentioned.

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