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Biological And Antimicrobial Activity of Portulaca oleracea  

Cho, Young-Je (Department of Food Engineering Kyungpook National University)
Ju, In-Sik (Department of Food Engineering Kyungpook National University)
Kwon, Oh-Jun (Gyeongbuk Regional Innovation Agency)
Chun, Sung-Sook (Department of Food Science & Technology Yeungnam University)
An, Bong-Jeun (Department of Cosmeceutical Science, Daegu Hanny University)
Kim, Jeung-Hoan (NIP Biotech.)
Publication Information
Applied Biological Chemistry / v.51, no.1, 2008 , pp. 49-54 More about this Journal
Abstract
The concentration of total phenolic compounds of the water extracts and 80% ethanol extracts form Portulaca oleracea were 3.05 ${\mu}g/ml$ and 6.33 ${\mu}g/ml$, respectively. The total antioxidant activities of water extracts and 80% ethanol extracts of Portulaca oleracea were 89.2% and 72.9% in DPPH assay, 69.0% and 96.5% in ABTS assay, antioxidant protection factor of the water and 80% ethanol extracts were each 2.73 PF and 3.63 PF. Tyrosinase inhibitory activities were water extracts and 80% ethanol extracts of Portulaca oleracea were 20.2% and 38.7%. Portulaca oleracea showed high antimicrobial activites against Helicobater pylori, Staphylococcus epidermidis, Staphylococcus aureus, Eschericia coli and Streptococcus mutans. Minimum inhibitory concentrations (MICs) on Helicobacter pylori, Staphylococcus epidermidis, Staphylococcus aureus, Escheichia coli and Streptococcus mutans were 200, 50, 100, 100 and 150 ${\mu}g/ml$, respectively. The result suggest that Portulaca oleracea extracts may be useful as potential source as antioxidant and antimicrobials.
Keywords
antioxidant; Escherichia coli; Helicobacter pylori; Portulaca oleracea; Staphylococcus aureus; Staphylococcus epidermidis; Streptococcus mutans; tyrosinase;
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Times Cited By KSCI : 8  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
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