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KMID : 1134820110400020316
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Journal of the Korean Society of Food Science and Nutrition
2011 Volume.40 No. 2 p.316 ~ p.320
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Antioxidant Component and Activity of Dropwort (Oenanthe javanica) Ethanol Extracts
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Hwang Cho-Rong
Hwang In-Guk
Kim Hyun-Young
Kang Tae-Soo
Kim Yun-Bae
Joo Sung-Soo
Lee Jun-Soo
Jeong Heon-Sang
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Abstract
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This study was conducted to investigate the antioxidant compounds and antioxidant activity on the dropwort (Oenanthe javanica) and its solvent fraction. The dropwort was extracted with 70% (v/v) ethanol, and then partitioned using the solvents of hexane, chloroform, ethyl acetate, butanol, and aqueous. The ethyl acetate fraction contained the highest phenolic and flavonoid of 240.61 ㎎ GA eq/g and 105.57 ㎎ catechin eq/g, followed by ethanol extract of 37.50 ㎎ GA eq/g and 26.50 ㎎ catechin eq/g, respectively. The DPPH radical scavenging activity (IC??) on the solvent fractions increased in the order of ethyl acetate, butanol, ethanol extract, chloroform, aqueous, and hexane with 0.08, 0.58, 1.07, 2.43, 2.47, and 3.31 ㎎/㎖, respectively. The ABTS radical scavenging activity was the highest value of 382 ㎎ AA eq/g in ethyl acetate fraction. Reducing power and chelating effect on the ethanol extracts and its solvent fraction were in range of 0.23~0.75 and 0~32.01%, respectively. Hydroxyl radical scavenging activity (IC??) was the lowest value of 26.71 μg/㎖ in ethyl acetate fraction.
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KEYWORD
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Oenanthe javanica, solvent fractionation, polyphenol, flavonoid, antioxidant activity
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