Phytochemical profile, antioxidant and antimicrobial activity of extracts obtained from erva-mate (Ilex paraguariensis) fruit using compressed propane and supercritical CO₂

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• 作者：Ciro E. F. Fernandes ; Jaqueline Scapinello…
• 关键词：Pressurized fluids ; Propane ; Supercritical CO2 ; Antioxidant activity ; Minimum inhibitory concentration
• 刊名：Journal of Food Science and Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：54
• 期：1
• 页码：98-104
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Food Science; Nutrition; Chemistry/Food Science, general;
• 出版者：Springer India
• ISSN：0975-8402
• 卷排序：54

文摘

Traditionally, Ilex paraguariensis leaves are consumed in tea form or as typical drinks like mate and terere, while the fruits are discarded processing and has no commercial value. The aim of this work to evaluate phytochemical properties, total phenolic compounds, antioxidant and antimicrobial activity of extracts of Ilex paraguariensis fruits obtained from supercritical CO₂ and compressed propane extraction. The extraction with compressed propane yielded 2.72 wt%, whereas with supercritical CO₂ 1.51 wt% was obtained. The compound extracted in larger amount by the two extraction solvents was caffeine, 163.28 and 54.17 mg/g by supercritical CO₂ and pressurized propane, respectively. The antioxidant activity was more pronounced for the supercritical CO₂ extract, with no difference found in terms of minimum inhibitory concentration for Staphylococcus aureus for the two extracts and better results observed for Escherichia coli when using supercritical CO₂.