Pressurized liquid extraction of mate tea leaves.
Anal Chim Acta
; 625(1): 70-6, 2008 Sep 05.
Article
en En
| MEDLINE
| ID: mdl-18721542
The objective of this work is to investigate the influence of process parameters on the pressurized liquid extraction (PLE) of Ilex paraguariensis leaves. A factorial 2(6-2) experimental design was employed using responses as the extraction yield and the chromatographic profile of the extracts. The extraction time, polarity of solvent, amount of sample, numbers of PLE cycles, flushing volume and extraction temperature were selected as independent variables (factors). Results obtained indicated that the solvent polarity was the most significant variable in the study, while the amount of sample and extraction temperature also showed significant effect. The other variables did not present significant influence in the yield of extraction. GC/MS analysis of the extract enabled the identification of saturated hydrocarbons, fatty acids, fatty acid methyl esters, phytosterols and theobromine in the extracts. Quantitative analysis of four compounds presented in the extracts (caffeine, phytol, vitamin E and squalene) was performed by the GC/MS in the SIM mode.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bebidas
/
Extractos Vegetales
/
Hojas de la Planta
/
Ilex paraguariensis
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Anal Chim Acta
Año:
2008
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos