QUANTIFICATION OF USNIC ACID IN USNEA-FLORIDA BY DENSITOMETRIC HIGH-PERFORMANCE THIN-LAYER CHROMATOGRAPHY

• Type: Article in International Scientific Journal
• Date: 1991

Authors

polonia, maj (Author) Other; carneiro, af (Author) Other; pinto, mmm (Author) FFUP

Journal

Title: Journal of Liquid Chromatography and Related Technologies

Vol. 14

Pages: 1447-1452

ISSN: 1082-6076

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 6 Citations

Scopus - 4 Citations

Other information

Authenticus ID: P-001-R5H

DOI: 10.1080/01483919108049626

Abstract (EN): A densitometric HPTLC method was developed for the direct quantification of usnic acid in the lichen Usnea florida. The method involved a separation of usnic acid on a HPTLC palte in an appropriate eluent and in situ scanning of samples and standard zones. The percent recoveries for added usnic acid to samples were 102.75 to 106.29 % respectively. Both regression lines and correlation coefficients were used in calculation of usnic acid concentration in chloroform extract and in recovery rates.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6