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http://dx.doi.org/10.5338/KJEA.2017.36.4.40

Antioxidant and Metalloproteinase Inhibitory Activities of Ethanol Extracts from Lespedeza cuneata G. Don  

Shin, Yong Ha (Department of Agriculture, Graduate School of Jeju National University)
Song, Chang-Khil (Department of Agriculture, Graduate School of Jeju National University)
Publication Information
Korean Journal of Environmental Agriculture / v.36, no.4, 2017 , pp. 263-268 More about this Journal
Abstract
BACKGROUND: Lespedeza cuneata G. Don is a well-known medicinal plant. In this study, the biological activities of L. cuneata extracts were investigated. METHODS AND RESULTS: L. cuneata shoot was extracted with 30% ethanol and further fractionated with organic solvents. Total phenolic and flavonoid content, antioxidant activity, and matrix metalloproteinase inhibition effect of the extract and fractions were measured. Among the tested extract and fractions, the highest contents of total phenolic and flavonoids were found in ethyl acetate fraction (117.8 mg GAE/g and 35.9 mg QE/g, respectively). Ethyl acetate fraction showed the highest DPPH and ABTS radical scavenging activity, and the antioxidant activity of the other fractions followed the order n-hexane fraction>ethanol extract>methyl chloroform>n-butanol fraction. Inhibitory effect on the expression of matrix metalloproteinases (MMP1 and MMP3) was highest in the fraction of ethyl acetate, and n-butanol fraction also significantly inhibited the expression of MMP3. Antioxidant activities of L. cuneata extracts were significantly positively related to their phenolic and flavonoid content. CONCLUSION: Ethyl acetate fraction of L. cuneata ethanol extract showed potent antioxidant and matrix metalloproteinases inhibitory activities. Those activities might be related to the high total phenolic and flavonoid content of the extract.
Keywords
Antioxidant; Flavonoid; Lespedeza cuneata; Matrix metalloproteinase; Phenol;
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Times Cited By KSCI : 7  (Citation Analysis)
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