| Autor: |
Fernandes CEF; Environmental Sciences Area, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC Brazil., Scapinello J; Environmental Sciences Area, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC Brazil., Bohn A; Environmental Sciences Area, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC Brazil., Boligon AA; Environmental Sciences Area, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC Brazil., Athayde ML; Phytochemical Research Laboratory, Department of Industrial Pharmacy, Federal University of Santa Maria, Build 26, Room 1115, Santa Maria, CEP 97105-900 Brazil., Magro JD; Phytochemical Research Laboratory, Department of Industrial Pharmacy, Federal University of Santa Maria, Build 26, Room 1115, Santa Maria, CEP 97105-900 Brazil., Palliga M; Environmental Sciences Area, Universidade Comunitária da Região de Chapecó (Unochapecó), P.O. Box 1141, Chapecó, SC Brazil., Oliveira JV; Department of Chemical and Food Engineering, UFSC, Florianópolis, SC Brazil., Tres MV; Federal University of Santa Maria, UFSM, Cachoeira do Sul, RS Brazil. |
| Abstrakt: |
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 CO 2 and compressed propane extraction. The extraction with compressed propane yielded 2.72 wt%, whereas with supercritical CO 2 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 CO 2 and pressurized propane, respectively. The antioxidant activity was more pronounced for the supercritical CO 2 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 CO 2 . |
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