Produção Nacional
Revisado por pares
Influence of Agronomic Variables on the Composition of Mate Tea Leaves ( Ilex paraguariensis ) Extracts Obtained from CO 2 Extraction at 30 °C and 175 bar
2004; American Chemical Society; Volume: 52; Issue: 7 Linguagem: Inglês
10.1021/jf035143u
ISSN1520-5118
AutoresÂngela Aquino Esmelindro, Jonathan G. dos Santos, Altemir José Mossi, Rosângela Assis Jacques, Cláudio Dariva,
Tópico(s)Agricultural and Food Sciences
ResumoThe 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.
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