Influence of Agronomic Variables on the Composition of Mate Tea Leaves (Ilex paraguariensis) Extracts Obtained from CO2 Extraction at 30 °C and 175 bar

The aim of this work is to assess the influence of light intensity (plants with direct sun exposure and in a controlled light intensity) and age of leaves (6−24 months) on the characteristics of the extracts of mate tea leaves obtained from carbon dioxide at high pressures. Samples of mate were coll...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2004-04, Vol.52 (7), p.1990-1995
Main Authors: Esmelindro, Ângela Aquino, Dos Santos Girardi, Jonathan, Mossi, Altemir, Jacques, Rosângela Assis, Dariva, Cláudio
Format: Article
Language:English
Subjects:
Biological and medical sciences
Food engineering
Food industries
Fundamental and applied biological sciences. Psychology
General aspects
Online Access:Get full text
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Summary:The aim of this work is to assess the influence of light intensity (plants with direct sun exposure and in a controlled light intensity) and age of leaves (6−24 months) on the characteristics of the extracts of mate tea leaves obtained from carbon dioxide at high pressures. Samples of mate were collected in an experiment conducted under agronomic control at Industria e Comercio de Erva-Mate Barão LTDA, Brazil. The content of selected organic compounds of the extracts was evaluated by gas chromatography together with mass spectrometry. Quantitative analysis of caffeine, theobromine, phytol, vitamin E, squalene, and stigmasterol was performed, and the results showed that field variables exert a strong influence on the liquid yield and on the chemical distribution of the extracts. Keywords: Mate tea leaves (Ilex paraguariensis); agronomic variables; drying; supercritical extraction; GC/MSD
ISSN:0021-8561
1520-5118
DOI:10.1021/jf035143u