Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/74593
Type: Artigo de periódico
Title: Statistical mixture design investigation of fractionated and total extracts from Erythrina speciosa Andrews leaves
Author: Soares, PK
Bruns, RE
Scarminio, LS
Abstract: The simplex centroid mixture design for the ethanol, dichloromethane, hexane and acetone solvents has been applied to the extraction of crude mass and the fiber, organic, neutral and basic fractions as well as the fractionation residues of Erythrina speciosa Andrews leaves. Binary and ternary synergic solvent interactions are seen to provide dominant contributions to the extraction of both crude mass and all the fractions. Quadratic and special cubic mixture models precisely predict the extracted quantities of each fraction and the residue as a function of the proportions of the four solvents. Different solvent mixtures are found to be the most efficient extractors for the different fractions: binary dichloromethane-hexane mixtures for the fiber fraction, ternary ethanol-dichloromethane-acetone mixtures for the neutral fraction, binary ethanol-dichloromethane mixtures for the organic fraction, crude extract and residue values and ternary ethanol-dichloromethane-hexane mixtures for the basic fraction. Principal component analysis shows that the ethanol-dichloromethane mixtures are important for extracting large quantities of the basic and organic fractions as well as of the residue and crude masses.
Subject: Erythrina speciosa Andrews leaves
Extraction optimization
Mixture modeling
Principal components
Simplex centroid design
Country: Alemanha
Editor: Wiley-v C H Verlag Gmbh
Rights: fechado
Identifier DOI: 10.1002/jssc.200800534
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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