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http://dx.doi.org/10.5658/WOOD.2010.38.6.579

Studies on Antimicrobial and Antioxidative Activities of Extracts from Magnoliaceae  

Lee, Sung-Suk (Korea Forest Research Institute)
Lee, Hak-Ju (Korea Forest Research Institute)
Publication Information
Journal of the Korean Wood Science and Technology / v.38, no.6, 2010 , pp. 579-586 More about this Journal
Abstract
This study was carried out to evaluate the antifungal and antioxidative activities of ethanol extracts from Magnoliaceae to investigate the possibility for the natural fungicides and food preservatives. The antifungal activities of ethanol extracts were evaluated as a hyphal growth inhibition rate using four plant pathogenic and five wood rot fungi. The high inhibition activity on the growth of fungi was shown in bark of Magnolia obovata that indicated more than 50% hyphal growth inhibition rate except Trametes versicolor, one of the white rot fungi. The antifungal activity was the highest in the ethanol extracts from M. obovata and the following was in order of M. kobus and M. sieboldii. The extract from bark in M. obovata showed higher antifungal activity than that from wood in the same species. Especially, the extracts from flower of M. denudata and M. liliflora indicated the high antifungal activities, while the other portions of same plants showed the low activities. On the other hand, a free radical scavenging method was adopted with 1,1-diphenyl-2-picrylhydrohydrazyl (DPPH) in order to test the antioxidative activities of ethanol extracts. The free radical scavenging activity was very high in the extracts from branch of Schizandra nigra and Kadsura japonica that showed more than 90% at the concentration of 100 ${\mu}g/m{\ell}$. It also turned out that the antioxidative activity of branch of S. nigra and K. japonica was similar to ${\alpha}$-tocopherol and butylated hydroxytoluene, one of the effective synthetic antioxidants. From these results, it can be suggested that the branches of S. nigra and K. japonica have the positive antioxidative activities and can be applied for the food preservatives and cosmetic ingredient.
Keywords
Magnoliaceae; antifungal activity; antioxidative activity; Magnolia obovata; Schizandra nigra; Kadsura japonica;
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Times Cited By KSCI : 9  (Citation Analysis)
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