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

• Tipo: Artigo em Revista Científica Internacional
• Data: 1991

Autores

polonia, maj (Autor) Outra; carneiro, af (Autor) Outra; pinto, mmm (Autor) FFUP

Revista

Título: Journal of Liquid Chromatography and Related Technologies

Vol. 14

Páginas: 1447-1452

ISSN: 1082-6076

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 4 Citações

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6