CHEMISTRY AND BIOEFFICACY OF PARTHENIN AND ITS DERIVATIVES AGAINST Tribolium castaneum (Herbst
KrishiKosh
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Title |
CHEMISTRY AND BIOEFFICACY OF PARTHENIN AND ITS DERIVATIVES AGAINST Tribolium castaneum (Herbst
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Creator |
Yadwinder Singh
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Contributor |
Chahal, K. K.
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Subject |
Chemistry
botany |
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Description |
Extract was obtained by Soxhlet extraction of dried and powdered leaves of Parthenium hysterophorusL.with chloroform as solvent, followed by the column chromatography in chloroform: acetone (5%) as eluent resulted in the isolation of parthenin (1). Parthenin (1) was subjected to reactions with diazomethane, sodium borohydride, methanol and diethanolamine which afforded diazomethane adduct, reduction product, methanol adduct and diethanolamine adductas their respective products (50‐53). Parthenin and its derivatives were characterised on the basis of melting point,TLC,IR, 1H NMR and Mass spectra. Parthenin and its derivatives were tested for their bioefficacy against adults of Tribolium castaneum (Herbst) by releasing them in wheat grains spiked with various concentrations of test compounds viz. 500,1,000, 2,000,4,000, 5,000 and 10,000 μg g‐1 of wheat and calculating their corrected percent mortality using Abbott’s formula. All the compounds exhibited complete mortality at the spiking level of 10,000 μg g‐1. Reduction product was found to be most potent followed by parthenin, diethanolamine adduct, methanol adduct and diazomethane adduct. |
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Date |
2016-11-29T16:02:47Z
2016-11-29T16:02:47Z 2010 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/88200
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Language |
en
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Format |
application/pdf
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