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KMID : 0380619930250060677
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Korean Journal of Food Science and Technology
1993 Volume.25 No. 6 p.677 ~ p.682
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Antioxidative Effect of us javanica Linne Extract by Various Solvents
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장영상/Chang, Young Sang
신동화/강우석/이연재/Shin, Dong Hwa/Kang, Woo Suk/Lee, Yun Jae
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Abstract
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Hexane(Hx), ethyl acetate(EtoAc) methanol(MeOH) and 99% ethanol(EtOH) extract of Rhus javanicus Lines with synergists e.g. ascorbic acid(AA), citric acid(CA) and 8-tocopherol(TO) were tested their antioxidative effect on palm oil and lard by Rancimat. The methanol showed the highest extraction yield as 14.53%(w/w). When each 600 ppm of Hx, EtOAc, MeOH and EtOH extract with 200 ppm of AA was added to palm oil, the antioxidative index(AI: induction time of oil containing of each extract/induction time of test oil) were 1.83, 2.25, 2.81 and 2.85 respectively which were higher than other treatments and 600 ppm of each extract with 200 ppm of TO to lard, the AI were 3.64, 7.83, 7.34 and 9.30 respectively. Each solvent fractionate of EtOH and EtOAc extracts resulted no higher antioxidative effect than crude whole extract. Palm oil and lard containing 600 ppm of methanol extract were very stable comparing with the control by POV and TBA at oven test(60℃).
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