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Studies for Component Analysis and Antioxidative Evaluation in Acorn Powders  

Shim, Tae-Heum (Gangwon Research Institute of Health and Environment)
Jin, Ying-Shan (Division of Biotechnology, Kangwon National University)
Sa, Jae-Hoon (Gangwon Research Institute of Health and Environment)
Shin, In-Cheol (Gangwon Research Institute of Health and Environment)
Heo, Seong-Il (Division of Biotechnology, Kangwon National University)
Wang, Myeong-Hyeon (Division of Biotechnology, Kangwon National University)
Publication Information
Korean Journal of Food Science and Technology / v.36, no.5, 2004 , pp. 800-803 More about this Journal
Abstract
Chemical components and physiological activities of acorn powders were investigated to develop functional food. Proximate components were 87.29% crude fiber, 1.18% crude fat, 0.84% crude protein, and 0.12% crude ash. Potassium was most predominant mineral, followed by phosphorus, calcium, magnesium, and sodium. Contents of unsaturated fatty acids, such as oleic, linoleic, and linolenic acids, were higher than those of saturated fatty acids. Water and 75% ethanol extracts of acorn powders showed higher absorbency at 285 nm. Water and 75% ethanol extracts exhibited antioxidative activity with $IC_{50}$ of 19.0 and $21.4\;{\mu}g/mL$, respectively, indicating they are the major biological component in acorn powders. Results suggest water extract of acorn can be used as new material for natural antioxidant and functional food.
Keywords
chemical components; antioxidative activity; physiological activities; water extracts; acorn powders;
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