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Titolo:
EXTRACTION OF LOW-POLARITY COMPOUNDS (WITH EMPHASIS ON COUMARIN AND KAURENOIC ACID) FROM MIKANIA-GLOMERATA (GUACO) LEAVES
Autore:
VILEGAS JHY; DEMARCHI E; LANCAS FM;
Indirizzi:
UNIV SAO PAULO,INST QUIM SAO CARLOS,CAIXA POSTAL 780 BR-13560970 SAO CARLOS SP BRAZIL UNIV SAO PAULO,INST QUIM SAO CARLOS BR-13560970 SAO CARLOS SP BRAZIL
Titolo Testata:
Phytochemical analysis
fascicolo: 5, volume: 8, anno: 1997,
pagine: 266 - 270
SICI:
0958-0344(1997)8:5<266:EOLC(E>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPERCRITICAL-FLUID EXTRACTION; SYSTEM;
Keywords:
MIKANIA GLOMERATA SPRENG.; COMPOSITAE; GUACO; EXTRACTION METHODS; SUPERCRITICAL FLUID EXTRACTION; COUMARIN; KAURENOIC ACID; LUPEOL; LUPEOL ACETATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
J.H.Y. Vilegas et al., "EXTRACTION OF LOW-POLARITY COMPOUNDS (WITH EMPHASIS ON COUMARIN AND KAURENOIC ACID) FROM MIKANIA-GLOMERATA (GUACO) LEAVES", Phytochemical analysis, 8(5), 1997, pp. 266-270

Abstract

Five methods for the extraction of low-polarity compounds from Mikania glomerata Spreng. (Compositae) leaves were compared: conventional maceration, maceration with sonication, Soxhlet, and supercritical fluidextraction using hexane (SFE-hexane) or carbon dioxide (SFE-CO2) as the extraction fluid. Evaluation of these methods by relating extraction yield to extraction time showed that SFE-hexane was the most efficient method. SFE-CO, showed a lower yield, but significantly higher thanconventional methods (maceration and Soxhlet). SFE-hexane and maceration gave the highest yield of coumarin, while maceration under sonication gave the highest yield of kaurenoic acid. Among the further chemical constituents of Mikania glomerata leaves identified by high resolution gas chromatography-mass spectrometry were lupeol and lupeol acetate. (C) 1997 by John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 21:29:52