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KMID : 0665420050200060703
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Korean Journal of Food Culture
2005 Volume.20 No. 6 p.703 ~ p.708
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The Antioxidant Activities of Three Solvent(Ether, Butanol, Water) Extrats from Chestnut Inner Shell in Soybean Oil
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Oh Seung-Hee
Kim Yong-Wook
Kim Myoung-Ae
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Abstract
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This study was carried out to compare the antioxidant activities of the ether, butanol, water extracts from chestnut inner shell(Castanea crenata Sieb. et Zucc.) with those of tocopherol and BHA in soybean oil. All additives were added to soybean oil on the quantities of 0.02%. Comparing the antioxidant activities under autooxidation condition at 45.0±0.5 for 42days of the extracts were recorded in the order of butanol>ether>control>BHA>tocopherol depending on the solvent. Under the condition at 60.0±0.5°C for 32days, the butanol extracts represented the high antioxidation effect, however, there was no significant differences between the ether extracts and control. Under thermal oxidation condition, the ether extract showed stronger antioxidant activity than those of the butanol extract. In the results of polyphenol compound analysis, ellagic acid, quercetin, morin, naringenin, flavanol were included in the ether extracts and ellagic acid, naringenin, gallic acid, flavanol were included in the butanol extracts, respectively. Among them, ellagic acid in ether extract and gallic acid and naringenin in butanol extracts seed to increase the antioxidant activities in the substrate oil.
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KEYWORD
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chestnut inner shell, ether extract, butanol extract, antioxidant activity, soybean oil
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