Natural Product Research: Formerly Natural Product Letters
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Investigation on phenylpropanoids rich Melaleuca decora (Salisb.) Britt. essential oil Neharica Gupta , N. Manika , Suman Singh , S.C. Singh , V.S. Pragadheesh , Anju Yadav & C.S. Chanotiya a a a a a a a a
Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Lucknow, Uttar Pradesh – 226 015, India Version of record first published: 19 Oct 2011.
To cite this article: Neharica Gupta , N. Manika , Suman Singh , S.C. Singh , V.S. Pragadheesh , Anju Yadav & C.S. Chanotiya (2012): Investigation on phenylpropanoids rich Melaleuca decora (Salisb.) Britt. essential oil, Natural Product Research: Formerly Natural Product Letters, 26:20, 1945-1947 To link to this article: http://dx.doi.org/10.1080/14786419.2011.628175
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Natural Product Research Vol. 26, No. 20, October 2012, 1945–1947
SHORT COMMUNICATION Investigation on phenylpropanoids rich Melaleuca decora (Salisb.) Britt. essential oil Downloaded by [CIMAP Central Institute of Medicinal & Aromatic Plants] at 21:43 07 March 2013 Neharica Gupta, N. Manika, Suman Singh, S.C. Singh, V.S. Pragadheesh, Anju Yadav and C.S. Chanotiya* Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Lucknow, Uttar Pradesh – 226 015, India (Received 24 September 2010; final version received 16 July 2011) The essential oil of Melaleuca decora twigs has been obtained by hydrodistillation and analysed by GC-FID, GC/MS and 1H-, 13C-NMR experiments. The most abundant class of compounds in M. decora twig oil was phenylpropanoids represented by methyl eugenol (92.4%) as the most exclusive constituent. In terms of molecular diversity, phenylpropanoids dominate M. decora essential oil with low terpenoid (3.9%) proportion. Keywords: Melaleuca decora; Myrtaceae; phenylpropanoid; methyl eugenol; molecular diversity.
1. Introduction The genus Melaleuca (Myrtaceae family) comprised of over 100 species that are grown for ornamental purposes. The genus is closely allied to Callistemon differing mainly in the stamens, which are united in five bundles opposite to the petals (Bailey, 1968). Melaleuca decora is about 12 m high, leaves 15–16 mm long, 1–2 mm wide scattered, flat or narrowly elliptic, acute with prominent midrib, 2-veined narrow at the base, shrub to tree like nature and is native to Australia (Bentham, 1866). To date, many publications on oil compositions from different Melaleuca species have been reported (Brophy et al., 1992; Dung et al., 1994; Johns et al., 1992; Southwell et al., 1992; Williams & Lusunzi, 1994). Methyl eugenol was identified as major component of M. bracteata (97.7%) (Aboutabl et al., 1991), M. leucadendra (96.6–99%) (Brophy et...