Abstract
Roots and rhizomes of Asparagus stipularis Forssk were separately extracted using supercritical CO2 extraction (SCCO2) and pressurized liquid extraction (PLE) and their Total Phenols Content and antioxidant potential was investigated. The results indicated that the roots and rhizomes are a potential source of natural antioxidants. The PLE method gave better extraction yields than SFE and its fractions present the highest antioxidant activity. Direct evaluation of antioxidant capacity using the QUENCHER procedure showed that also the solid residue of the plant material remaining after the SCCO2 and PLE may be of interest as a source of valuable phytochemicals.
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