Brazilian Journal of Biological Sciences (ISSN 2358-2731)

Home Archive v. 4, No. 7 (2017) Kotoky


Vol. 4, No. 7, p. 19-23 - Jun. 30, 2017


Chemical compositions of the essential oils of inflorescence and vegetative aerial parts of Elsholtzia blanda (Benth.) Benth. (Lamiales: Lamiaceae) from Meghalaya, North-East India

Rumi Kotoky , Siddhartha Pratim Saikia , Bithika Chaliha and Subhan Chandra Nath

The compositional analysis of essential oil content in inflorescence and vegetative aerial parts of Elsholtzia blanda Benth. (Lamiales: Lamiaceae) growing wild in Meghalaya, North-East India were studied by GC and GC-MS. A total of 30 and 17 components representing 96.9%-98.3% and 92.6%-92.8% of the total oils from the inflorescence and vegetative aerial parts, respectively, were identified. Significant difference in composition of oils were observed between the two plant parts; 15 components detected in the oil of inflorescence were lacking in the oil of vegetative aerial parts, while two components present in the oil of vegetative aerial parts were absent in the inflorescence oil. Linalool was the major component in oils of both inflorescence (77.3%-80.2%) and vegetative aerial parts (57.9%-62.9%). Trans-linalool oxide (8.4%-9.9%), cis-linalool oxide (8.3%-9.3%) and 3,7-dimethyl-1,5-octadiene-3,7-diol (4.7%-5.1%) were however found in higher amount in the oil of vegetative aerial parts compared to inflorescence. For the first time the composition of oil in the inflorescence part has been reported in this communication while the oil from vegetative aerial parts containing linalool as the major component (44.9%) was although reported earlier but comparatively higher percentage of same was observed in vegetative aerial part (57.9%-62.9%) and inflorescence (77.3%-80.2%) in the present investigation with the plants from Meghalaya, India.

Elsholtzia blanda; Lamiaceae; Essential oil composition; Linalool; Trans-linalool oxide; Cis-linalool oxide.


Full text

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