alexa Leaf Essential Oil of Cultivated Pimenta Racemosa (Mill.) J.W. Moore from North India: Distribution of Phenylpropanoids and Chiral Terpenoids
ISSN: 2167-0412

Medicinal & Aromatic Plants
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Research Article

Leaf Essential Oil of Cultivated Pimenta Racemosa (Mill.) J.W. Moore from North India: Distribution of Phenylpropanoids and Chiral Terpenoids

VS Pragadheesh1, Anju Yadav1,2, SC Singh3, Namita Gupta2 and CS Chanotiya1,2*
1Laboratory of Aromatic Plants and Chiral Separation, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow - 226 015, India
2Central Instrument Facility, Chemical Sciences, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow - 226 015, India
3Taxonomy and Pharmacognosy, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow - 226015, India
Corresponding Author : CS Chanotiya
Laboratory of Aromatic Plants and Chiral Separation and
Central Instrument Facility
Chemical Sciences
CSIR-Central Institute of Medicinal and Aromatic Plants
Lucknow -226 015, India
Tel: +91-522-2718607
E-mail: [email protected], [email protected]
Received October 25, 2012; Accepted November 12, 2012; Published November 16, 2012
Citation:Pragadheesh VS, Yadav A, Singh SC, Gupta N, Chanotiya CS (2013) Leaf Essential Oil of Cultivated Pimenta Racemosa (Mill.) J.W. Moore from North India: Distribution of Phenylpropanoids and Chiral Terpenoids. Med Aromat Plants 2:118. doi: 10.4172/2167-0412.1000118
Copyright: © 2012 Pragadheesh VS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

In this work, cultivated Pimenta racemosa from North Indian plains was studied for its leaf volatile composition twice in year at two distinct seasons (spring and autumn) using GC-FID, enantio-GC-FID, GC/MS and 1H-, 13C-NMR and DEPT experiments. Phenylpropanoid was the abundant class of compounds represented by eugenol (72.9%) followed by chavicol (7.7%) whereas myrcene (9.6%) and limonene (3.8%) were identified as the most exclusive terpene constituents in spring collection. The autumn sample was recorded with highest eugenol (92.9%) proportion. Notably, presence of chavicol differentiates this oil from Pimenta dioica. An enantiomeric excess for (S)-(-)-limonene (41.1-45.3%) and (R)-(-)-linalool (86.7-89.9%) was recorded over (R)-(+)-limonene and (S)-(+)-linalool, respectively when separated on 6-tert-butyldimethylsilyl-2,3-diethyl-β-cyclodextrin chiral phase. Moreover, both the monoterpene derivatives occur as enantiomeric mixture in P. racemosa leaf essential oil.

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