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Title: Extraction of bioactive principles from Mucuna pruriens seeds
Authors: Misra, Laxminarain
Wagner, Hildebert
Keywords: Mucuna pruriens (L.) DC. Syn. M. prurita Hook
L-DOPA, Extraction procedures
Antioxidant activity
Neuroprotective activity
Anti-Parkinson Activity
Issue Date: Feb-2007
Publisher: CSIR
Abstract: Mucuna pruriens (L.) DC. Syn. M. prurita Hook. (Papiliona-ceae) is used in male impotency, as aphrodisiac, in sexual debility, and as nervine tonic. It also possesses anti-parkinson property, possibly due to the presence of L-DOPA. In the present study, attempts were made to develop the suitable method(s) for extrac-tion of L-DOPA/other active components from the seeds using different solvents. The various extracts were also screened for their neuroprotective and antioxidant activities. In addition, TLC and HPLC fingerprinting of the extracts for amino acid compo-nents were also developed for preliminary and sophisticated analysis. The L-DOPA could be obtained in good yield on extrac-tion with EtOH-H2O mixture (1:1) using ascorbic acid as protec-tor. Interestingly, n-propanol extract, which contained negligible amount of L-DOPA, had shown significant neuroprotective activ-ity, suggesting that some components, other than L-DOPA, might also be responsible for anti-Parkinson property of seeds. The ex-tract (MW-0100) containing mainly amino acids and water-ethanol extract (1:1) (MWEL-1299) showed promising antioxi-dant activity (EC Sub(50) = 2.5 μg) against DPPH radicals. MWEL-1299 also exhibited encouraging results against 1-methyl-4-phenylpyridinium ion (MPP+) toxicity. The TLC fingerprinting may be used to authenticate the plant material in herbal industry.
Page(s): 56-60
ISSN: 0301-1208
Source:IJBB Vol.44(1) [February 2007]

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