Supercritical fluid extraction of alkaloids from Ilex paraguariensis St. Hil.

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• 作者：Eduardo Cassel ; Rubem Má ; rio Figueiró ; Vargas ; Gerti Weber Brun ; Diego Erthal Almeida ; Laura Cogoi ; Graciela Ferraro ; Rosana Filip
• 关键词：Supercritical extraction ; Caffeine ; Alkaloids ; Ilex paraguariensis St. Hil. ; Mathematical model
• 刊名：Journal of Food Engineering
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：100
• 期：4
• 页码：656-661
• 全文大小：344 K

文摘

In this work a study about extracts obtained from Ilex paraguariensis St. Hil. leaves with supercritical CO₂ was carried out. Experiments were performed in a pilot-scale extractor with capacity of 1 L at pressure of 120, 150, 170 and 200 bar for four temperature conditions, 313.15, 323.15, 333.15 and 343.15 K. The experimental data were fitted using a mathematical model characterized by the existence of two distinct periods of extraction. Numerical results for the adjusted parameters correlated very well the supercritical extraction experimental data. The confidence of results obtained from mathematical model and experiments was assured through the chi-square test.