CHemical Composition of Essential Oils of Berries of Juniperus Macrocarpa Sybth. And SM. And Turkey

The chemical compositions of the hydrodistilled essential oils of ripen and unripen berries of Juniperus macrocarpa Sibth. and Sm. (Jom) were analysed by GC-MS. Thirty eight compounds were identified from unripe berries, accounting for approximately 0.03% oil yield (v/w dried weight) and 16 compounds from ripe berries with 0.003% oil yield (v/w dried weight). While the major compounds in the essential oils of unripe berries were ?-cedrol (30.04%), ?-pinene (18.81%), germacrene-D (14.58%), ?-cadinene (3.80%), ×-cadinene (2.29%), ?-humulene (2.29%), ×-muurolene (2.27%), epi-bicyclosesquiphellandrene (1.69%), transcaryophyllene (1.68%), valencen (1.53 %) and ?-cedrol (49.87%),-caryophyllene (29.57%), ?-cedrene (4.75%), ?-muurolene (2.54%), carvacrol methyl ether (1.4%), trans-pinocarveol (1.2%), ?-pinene (1.13%), ?-muurolene (1.04%) were identified from ripe berries and their mean percentage varied according to their phenological stage. Both qualitative and quantitative differences between ripe and unripe berries of the plant were observed. © 2019 Bangladesh Botanical Society. All rights reserved.