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http://dx.doi.org/10.12925/jkocs.2017.34.3.555

Extraction Characteristics and Antioxidant Activity of Ethanol Extract of Rhus javanica Bark  

Noh, Jeong-Sook (Department of Food Science & Nutrition, Tongmyong University)
Park, Sun-Yi (Department of Cosmetology, Changshin University)
Jeong, Kap-Seop (Department of Food Science & Nutrition, Tongmyong University)
Publication Information
Journal of the Korean Applied Science and Technology / v.34, no.3, 2017 , pp. 555-561 More about this Journal
Abstract
This study was conducted to investigate the several physicochemical extraction characteristics and the antioxidant activities of ethanol extract from Rhus javanica bark. The contents of soluble solid and sugar in extract was measured to 73.5 mg/100g dry basis and $17.8^{\circ}Brix$, respectively. The contents of total aromatics, total flavonoids and total phenolic compounds was measured to 0.508 in absorbance, 49.88 mg/100g and 296.6 mg/100g, respectively. The reducing power of extract was about 27.5 % of ascorbic acid with the same soluble solid contents of the extract. But the ferric reducing antioxidant power and the DPPH radical scavenging ability of extract were measured to equivalent to those of ascorbic acid. The metal ion chelating ability of the extract was 81.58 % whereas that of ascorbic acid was 74.73 %. The nitrite scavenging ability of the extract was measured to 51.76 % at pH 2. And the antioxidative effect of the extract on soybean oil was observed with Rancimat test.
Keywords
Rhus javanica; DPPH radical scavenging ability; metal ion chelating ability; ferric reducing power; nitrite scavenging ability; rancimat test;
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Times Cited By KSCI : 7  (Citation Analysis)
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