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Electrochemical Determination of L ‐Dopa in Mucuna pruriens Seeds, Leaves and Commercial Siddha Product Using Gold Modified Pencil Graphite Electrode
Author(s) -
Kalachar H. C. B.,
Viswanatha R.,
Naik Y. Arthoba,
Raj D. Ananda,
Sudha P. N.
Publication year - 2011
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000558
Subject(s) - mucuna pruriens , ascorbic acid , aqueous solution , electrochemistry , nuclear chemistry , chemistry , detection limit , electrode , chromatography , organic chemistry , botany , food science , biology
In the present work a gold modified pencil graphite electrode (GPGE) was used for the determination of L ‐dopa present in the aqueous extracts of Mucuna pruriens seeds (MPS), Mucuna pruriens leaves (MPL) and Commercial Siddha Product (CSP). The GPGE shows excellent electrocatalytic activity towards the oxidation of both L ‐dopa and ascorbic acid (AA), with the separation of peak potential of 98 mV. The differential pulse voltammetric (DPV) results indicated that the detection limit for L ‐dopa was 1.54 µM ( S / N =3). This method can be successfully applied for the determination of L ‐dopa in real samples.