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Differential Pulse Polarographic Determination of Flavonoids, I: Total Flavonoids in Forsythia viridissima Lindl
Author(s) -
Temizer Aytekin,
Kir Sedef,
Toker Gülnur,
Baykal Turan,
Sener Bilge
Publication year - 1989
Publication title -
archiv der pharmazie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.468
H-Index - 61
eISSN - 1521-4184
pISSN - 0365-6233
DOI - 10.1002/ardp.19893220205
Subject(s) - polarography , rutin , chemistry , detection limit , forsythia , differential pulse voltammetry , pulse (music) , linear relationship , analytical chemistry (journal) , chromatography , mathematics , cyclic voltammetry , electrode , biochemistry , physics , inorganic chemistry , electrochemistry , antioxidant , detector , optics , alternative medicine , honeysuckle , pathology , traditional chinese medicine , medicine , statistics
A differential pulse polarographic method is described for the determination of total flavonoids expressed in terms of rutin which is obtained from the dried blossoms of Forsythia viridissima Lindl, cultivated in parks. Differential pulse polarograms of rutin show a distinct peak at ‐ 1.83 V (vs Ag/AgCl) at pH 6.0 Sörensen buffer. The detection limit found was 10 ppm and the response was linear up to 100 ppm with a relative standard deviation (at the 20 ppm level) of 0.75%.