Recovery of antioxidants from boldo (<i>Peumus boldus</i> M.) by conventional and supercritical CO<sub>2</sub> extraction

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dc.contributor.authordel Valle, JM
dc.contributor.authorGodoy, C
dc.contributor.authorAsencio, M
dc.contributor.authorAguilera, JM
dc.date.accessioned2025-01-21T01:08:27Z
dc.date.available2025-01-21T01:08:27Z
dc.date.issued2004
dc.description.abstractBoldo (Peumus boldus M.) is a native plant from Chile that has been used is traditional medicine to treat digestive and/or hepatobiliary disorders. An attempt was made in this work to extract antioxidant compounds from boldo using conventional solvents and supercritical carbon dioxide (SCCO2). Yield of soluble solids (SS), boldine, and compounds with antioxidant activity varied depending on part plant, solvent and extraction conditions. Following 24 h extraction, the highest yield was 33.4% (w/w, dry basis) of SS with 70:30 ethanol/water (v/v) mixture at 70 degreesC. Yield of alcoholic extractions increased as the temperature was raised from 20 to 70 degreesC, but the total antioxidant activity (free radical DPPH method) was maximal in boldo leaf extracts with aqueous ethanol at 50 degreesC (1648 TEAC/g dry leaf). Boldine concentration was maximal (12%) in boldo bark extracted with acidulated water, and decreased with extraction time when methanol or ethanol/water mixtures were used. No boldine was detected in boldo leaf extracts. The contribution of boldine to the antioxidant activity of boldo extracts was low, specially when using aqueous ethanol as solvent, and/or boldo leaf instead of boldo bark as substrate. Yield Of SCCO2 extraction was approximate to3% SS. Only non-polar compounds with limited antioxidant activity (0.08 TEAC/g extract) were extracted by SCCO2. (C) 2004 Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.foodres.2003.03.001
dc.identifier.issn0963-9969
dc.identifier.urihttps://doi.org/10.1016/j.foodres.2003.03.001
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96470
dc.identifier.wosidWOS:000222650300007
dc.issue.numero7
dc.language.isoen
dc.pagina.final702
dc.pagina.inicio695
dc.revistaFood research international
dc.rightsacceso restringido
dc.subjectboldine
dc.subjectboldo
dc.subjectnatural antioxidants
dc.subjectsupercritical CO2 extraction
dc.subjectTEAC
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleRecovery of antioxidants from boldo (<i>Peumus boldus</i> M.) by conventional and supercritical CO<sub>2</sub> extraction
dc.typeartículo
dc.volumen37
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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