Journal of the Serbian Chemical Society 2015 Volume 80, Issue 4, Pages: 465-473
https://doi.org/10.2298/JSC140425082S
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Chemical constituents of essential oils of Tephrosia purpurea and Ipomoea carnea and their repellent activity against Odoiporus longicollis
Sahayaraj Kitherian (Crop Protection Research Centre, St. Xavier’s College (Autonomous), Palayamkottai, Tamil Nadu, India)
Kombiah Poolpandi (Crop Protection Research Centre, St. Xavier’s College (Autonomous), Palayamkottai, Tamil Nadu, India)
Dikshit Anand K. (Division of Agrochemicals, Indian Agricultural Research Institute, New Delhi, India)
Rathi Martin J. (Department of Chemistry, St. Mary’s College, Thoothukudi, Tamil Nadu, India)
Chemical constituents of essential oils (EOs) obtained from stem and root of
Tephrosia purpurea (Linn.) Pers. and Ipomoea carnea Jacq. were investigated
by Gas Chromatography-Mass Spectrometry (GC-MS). Total lipid and oil content
was high in the stem than the root of T. purpurea and I. carnea. Essential
oils extracted from the stem and root of T. purpurea and I. carnea showed 9
and 8 compounds respectively. Hexadecanoic acid was found to be the principal
constituent of stem (69.61%) and root (46.97%) of T. purpurea while 70.61and
88.89% for stem and root, respectively in the case of I. carnea. The findings
of the present study suggest that T. purpurea and I. carnea EOs can be used
as a source of hexadecanoic acid which could be used for industrial purposes.
The essential oils of T. purpurea and I. carnea showed strong repellent
activity for males (-0.73 and -0.70 for T. purpurea and I. carnea stem EO
respectively) than females (-0.63 and -0.59 for T. purpurea and I. carnea
stem EO respectively) against banana pseudostem weevil Odoiporus longicollis.
The results indicated that the active compounds of essential oils from stems
of T. purpurea and I. carnea can be explored as natural repellents for
control of Odoiporus longicollis.
Keywords: Tephrosia purpurea, Ipomoea carnea, essential oils, hexadecanoic acid, repellent activity