The use of ultrasound in the extraction of Ilex paraguariensis leaves: a comparison with maceration.
Ultrason Sonochem
; 14(1): 6-12, 2007 Jan.
Article
en En
| MEDLINE
| ID: mdl-16439181
The objective of this work is to discuss the main parameters that influence the sonication extraction of Ilex paraguariensis leaves. For this purpose, the extraction time, solvent polarity, solvent volume, sample mass and particle size were evaluated. Results showed that the main variable affecting the extraction process was the solvent polarity. Though in a less extent, temperature and extraction time also demonstrated to be important parameters, while the other variables did not present a significant influence on the extraction yield. The extracts at the optimized condition were compared with those obtained by maceration, in terms of mass yield and chemical composition. The major compounds identified in the extracts were caffeine and palmitic acid. Some saturated hydrocarbons such as fatty acids, fatty acid methyl esters, phytosterols, and theobromine were also identified in the fractions.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sonicación
/
Extractos Vegetales
/
Hojas de la Planta
/
Ilex paraguariensis
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Ultrason Sonochem
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2007
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos