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KMID : 1007520110200010283
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Food Science and Biotechnology
2011 Volume.20 No. 1 p.283 ~ p.287
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Enhancement of Antioxidant and Antimicrobial Activities of Dianthus superbus, Polygonum aviculare, Sophora flavescens, and Lygodium japonicum by Pressure-assisted Water Extraction
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Gou Jin-gyu
Zou Yunyun
Ahn Ju-Hee
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Abstract
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The phenol amount of Lygodium japonicum extracted by the pressure-assisted water extraction (PAWE) was noticeably increased to 12.8mg GAE/g when compared to the conventional extraction (9.3 mg GAE/g) (p<0.05). The highest antioxidant activity was observed at Polygonum aviculare extracted by the PAWE, showing the lowest EC50 value of 0.09 mg/mL. The lowest minimum inhibitory concentrations (MIC99) of L. japonicum extracted by the PAWE were 2.59, 3.33, and 7.37 mg/mL, respectively, against Listeria monocytogenes, Salmonella Typhimurium, and Propionibacterium acnes. These results suggest that the PAWE can be an appropriate extraction method for enhancing biological and pharmaceutical properties of medicinal plants.
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KEYWORD
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pressure-assisted water extraction, phenol, flavonoid, medicinal plant
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