title: Comprehensive Evaluation of Antioxidant Potential of 10 Salvia Species Using High Pressure Methods for the Isolation of Lipophilic and Hydrophilic Plant Fractions.
abstract: Common sage (Salvia officinalis) is a well-known source of antioxidants and other bioactive compounds, while many other species within the Salvia genus have been poorly studied. The total content of phenolic compounds (TPC) and antioxidant capacity indicators were evaluated for the extracts of 10 Salvia spp. consecutively isolated by supercritical carbon dioxide (SFE-CO2) and pressurized liquid extraction with ethanol and water. Antioxidant properties of solid plant material were evaluated by the direct antioxidant capacity measurement by the so-called QUENCHER method. Total antioxidant capacity values were calculated by integrating the results obtained for all extracts and the whole plant material. TPC and antioxidant capacity of the extracts were greatly dependent on the plant species and extraction solvent. Ethanol extracts possessed significantly higher antioxidant capacity and TPC comparing to the extracts isolated with other solvents. In general, all studied Salvia species demonstrated strong antioxidant capacity; however, the antioxidant potential of such species as S. forsskaolii and S. verticillata was the highest and comparable with that of S. officinalis. The majority of studied Salvia species may be considered as promising sources of functional ingredients to be used in human nutrition for functional food and nutraceutical formulations.
authors.affiliation: Department of Food Science and Technology, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas, LT-50254, Lithuania.
authors.forename: Vaida
authors.initials: V
authors.lastname: Šulniūtė
authors.affiliation: Kaunas Botanical Garden, Vytautas Magnus University, Žilibero 6, LT-46324, Kaunas, Lithuania.
authors.forename: Ona
authors.initials: O
authors.lastname: Ragažinskienė
authors.affiliation: Department of Food Science and Technology, Kaunas University of Technology, Radvilėnų pl. 19, Kaunas, LT-50254, Lithuania. rimas.venskutonis@ktu.lt.
authors.forename: Petras Rimantas
authors.initials: PR
authors.lastname: Venskutonis
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000302:isolation & purification*; D005591:Chemical Fractionation; D019587:Dietary Supplements; D055951:Functional Food; D057927:Hydrophobic and Hydrophilic Interactions; D010636:Phenols / Q000032:analysis / Q000302:isolation & purification; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D027544:Salvia / Q000737:chemistry*; D012997:Solvents
chemical_list: D000975:Antioxidants; D010636:Phenols; D010936:Plant Extracts; D012997:Solvents
keywords: Antioxidant capacity; QUENCHER antioxidant assay; Salvia spp.; Total phenolic content