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Composition of the essential oil of Hypericum foliosum Aiton from five Azorean islands

✍ Scribed by Pedro A. G. Santos; A. Cristina Figueiredo; José G. Barroso; Luis G. Pedro; Johannes J. C. Scheffer

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
91 KB
Volume
14
Category
Article
ISSN
0882-5734

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✦ Synopsis

Eight collective samples of terminal cymose in¯orescences of Hypericum foliosum Aiton were collected on ®ve islands of the Azores (S. Jorge, S. Miguel, Pico, Terceira and Faial). The essential oils isolated by hydrodistillation to estimate the oil yields, and by distillation±extraction to determine the percentage composition of the oils, were analysed by GC and GC±MS. The oil yield varied between 0.10% and 0.25% and the main components (45%) were n-nonane (29±73%), limonene (7±46%), terpinolene (1±19%), b±caryophyllene (1±7%) and b-pinene (0.3±6%). With the exception of one oil sample from S. Jorge, cluster analysis showed a high degree of similarity between the populations studied.

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