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Studies on the Composition and Antioxidative Effect of Leaves form Korean Rosa davurica Pall.  

김준범 (강원대학교 바이오산업공학부)
최승필 (강원대학교 바이오산업공학부)
이득식 (동해대학교 외식산업학과)
함승시 (강원대학교 바이오산업공학부)
Publication Information
Food Science and Preservation / v.11, no.1, 2004 , pp. 106-110 More about this Journal
Abstract
The objective of this study was carried out to investigate nutritional characteristics and biological activities effects of Korean leaf of Rosa davurica Pall. in vitro. They were extracted with methanol and then further fractionated to n-hexane, chloroform, ethyl-acetate, n-butanol and water from methanol extracts. Methods of the antigenotoxic used in this experiment were UVA/UVB absorption property and DPPH radical scavenge. The proximate compositions of leaves of Rosa dauvrica Pall were 67.5％ of crude Moisture, 0.7％ of crude fat, 6.8％ of crude protein, 6.1％ of crude ash, and 20.8％ of crude fiber. The major minerals were K (1637.2 mg％), Ca (219.5 mg％), P (182.1 mg％), and Mg (135.1 mg％). Most of the fractions of methanol extract which leaves of Rosa dauvrica Pall. have strong absorbency at UVB region (308 nm) and UV A region (350nm). These fractions have a good absorbency property as synthetic filter and could be served as substitutes for synthetic UV sunscreen agents. All fractions (n-hexane, ethyl-acetate, n-butanol and water) from methanol extracts except chloroform fraction exhibited DPPH radical scavenging activity with IC$\_$50/ of 35.3, 6.0, 14.0, and 18.0 $\mu\textrm{g}$/mL.
Keywords
Rosa davurica Pall; analysis; antioxidative effect;
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