4.6 Article

Essential Oil Profile and Yield of Corolla, Calyx, Leaf, and Whole Flowering Top of Cultivated Lavandula angustifolia Mill. (Lamiaceae) from Utah

Journal

MOLECULES
Volume 26, Issue 8, Pages -

Publisher

MDPI
DOI: 10.3390/molecules26082343

Keywords

Lavandula angustifolia; Lamiaceae; essential oil; Utah; corolla; calyx; leaf; yield

Funding

  1. D. Gary Young Research Institute

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The study analyzed the volatile oil produced through steam distillation of lavender to establish the essential oil yield and aromatic profile from different parts of the plant. The essential oils from the corolla, calyx, leaf, and whole flowering top were analyzed and found to contain similar compounds but in varying relative percentages. The aromatic profiles of the different plant parts provide insight into the influence of the corolla, calyx, and leaf on the overall aromatic profile of the lavender essential oil.
Lavandula angustifolia Mill. (lavender) is an essential-oil-bearing plant in the Lamiaceae family. Volatile oil produced through the steam distillation of lavender was examined to establish the essential oil yield and aromatic profile from each portion of the plant-namely, the corolla, calyx, leaf, and whole flowering top. The resulting essential oils were analyzed by GC-FID and GC-MS. The different plant parts generally shared similar compounds but in varying relative percentages. Aromatic profiles of the whole flowering top and calyx were similar, with prominent compounds being linalool acetate (34.3%, 32.0%), linalool (26.5%, 32.9%), lavandulyl acetate (5.6%, 4.9%), terpinen-4-ol (5.3%, 7.0%), and (Z)-beta-ocimene (4.5%, 5.4%), respectively. Aromatic profiles for the corolla and leaf were unique. Prominent aromatic compounds of the corolla included linalool acetate (18.4%), linalool (10.8%), epi-alpha-cadinol (10.0%), borneol (7.3%), and lavandulyl acetate (6.3%). Prominent aromatic compounds of the leaf included epi-alpha-cadinol (19.8%), gamma-cadinene (11.0%), borneol (6.0%), caryophyllene oxide (4.9%), and bornyl acetate (4.8%). Complete profiles and essential oil yields of corolla, calyx, leaf, and whole flowering top were established. This study establishes the influence the corolla, calyx, and leaf exert on the aromatic profile of the whole flowering top and provides insight into authentication of lavender essential oil.

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