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Improved Chromatographic Method for the Purification of Phenolic Constituents of the Lichen Parmotrema tinctorum (Nyl.) Hale.

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Title Improved Chromatographic Method for the Purification
of Phenolic Constituents of the Lichen Parmotrema
tinctorum (Nyl.) Hale.
 
Creator Jayaprakasha, G. K.
Jaganmohan Rao, L.
Singh, R. P.
Sakariah, K. K.
 
Subject 06 Chromatography
01 Algae
 
Description A method for the separation and fractionation of the phenolic
compounds atranorin, methyl orsenillate, orsenillic acid, and
lecanoric acid from the lichen Parmotrema tinctorum (Nyl.) Hale
(P. tinctorum) using thin-layer chromatography (TLC) and column
chromatography, respectively, is described. TLC of lichen extract
with an acid-free developing solvent on silica gel G containing 1 %
oxalic acid is carried out, and the compounds are visualized as
yellow spots when sprayed with 10% sulfuric acid in methanol
followed by heating at 110°C. For the fractionation of pure lichen
compounds, column chromatography is carried out using silica gel
impregnated with 1 % oxalic acid. To our knowledge, it is also the
first report on the isolation and characterization of methyl
orsenillate and orsenillic acid from P. tinctorum (Nyl.) Hale.
 
Date 1998
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://ir.cftri.com/4090/1/Journal%20of%20Chromatographic%20Science%2C%20Vol.%2036%2C%20January%201998.pdf
Jayaprakasha, G. K. and Jaganmohan Rao, L. and Singh, R. P. and Sakariah, K. K. (1998) Improved Chromatographic Method for the Purification of Phenolic Constituents of the Lichen Parmotrema tinctorum (Nyl.) Hale. Journal of Chromatographic Science, 36. pp. 8-10. ISSN 0021-9665