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

Abstract
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.

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

DOI
10.21472/bjbs.040703

Full text
PDF

References
Bestman, H. J.; Rauscher, J.; Vostrowsky, O.; Pant, A. K.; Dev, V.; Parihar, R.; Mathela, C. S. Constituent of the essential oil of Elsholtzia blanda Benth. (Labiatae). Journal of Essential Oil Research, v. 4, p. 121-124, 1992.

Cheng, B.; Xinxiang, M.; Xuejian, Yu.; Jingkai, D. A preliminary analysis of the acclimatization and essential oil components of Elsholtzia blanda. Acta Metallurgica Sinica, v. 11, No. 1, p. 1-3, 1989.

Clark, G. S. A profile: an aroma chemical - Linalool. Perfumer Flav., v. 13, No. 8/9, p. 49-54, 1988.

Devi, A. D.; Devi, O. I.; Singh, T. C.; Singh, E. J. A study of aromatic plant species especially in Thoubal District, Manipur, North-East India. International Journal of Scientific and Research Publications, v. 4, No. 6 , p. 1-12, 2014.

Fang, H. J.; Xu, Y. O.; Lin, J. T. Studies on the chemical components of essential oil of Elsholtzia blanda Benth. Proceedings of the 11th International Congress of Essential Oils, Fragrances and Flavours, New Delhi, India, November, 1990. (v. 4, Chemistry Analysis and Structure). p. 49-53.

Lazaro, M. L. Distribution and biological activities of the flavonoid luteolin. Mid Review in Medicinal Chemistry, v. 9, p. 31-59, 2009.

Lesueur, D.; Bighelli, A.; Thitam, N.; Viet Than, N.; Thi Kim Dung, P.; Casanova, J. Composition and chemical variability of the essential oils of three Elsholtzia species from Vietnam: Elsholtzia blanda, Elsholtzia penduliflora and Elsholtzia winitiana. Natural Product Commun, v. 2, p. 857-861, 2007.

Lu, J. S.; Chen. T.; Guo, Z. The Chemical constituents of Elsholtzia blanda. Acta Bot. Sin., v. 43, p. 515-550, 2001.

Lv, J. S.; Shen, T.; Guo, Z.; Shen, X. W.; Zheng, S. Z. Chemical constituent of Elsoltzia blanda. Acta Bot. Sin., v. 43, p. 45-550, 2001.

Nath, S. C. Plant folk-medicines & Medicinal Plants of North-East India. Jorhat, Assam: CSIR - North East Institute of Science and Technology, 2011.

Rana, V. S.; Devi, R. L.; Verdeguer, M.; Blazquez, M. A. Elsholtzia blanda Bennth: new citral-rich chemotypes from India. Journal of Herbs Spices & Medicinal Plants, v. 18, No. 2, p. 132-139, 2012.

Singh, H. B.; Singh, R. S.; Sandhu, J. S. Herbal medicine of Manipur. Delhi: Daya Publishing House, 2003.

Singh, T. T.; Sharma, H. M.; Devi, A. R.; Rajanikanta, H. Plant used in the treatment of piles by the scheduled Caste Community of Andro Village in Imphal East District, Manipur (India). Journal of Plant Sciences, v. 2, No. 3, p. 113-119, 2014.

Thapp, R. K.; Agarwal, S. G.; Kapahi, B. K.; Srivastava, T. N. Chemodystematics of Himalayan Elsholtzia. J. Essential Oil Research, v. 11, p. 97-103, 1999.

Yonzong, G. S.; Yonzong, A.; Bhujel, R. B. Contribution to the ethnobotany of Darjeeling District, India. In: Jain, S. K. (Ed.). Ethnobotany and human welfare. New Delhi: Deep Publications, 1996. p. 388-389.