• Korean Journal of Medicinal Crop Science
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• v.15 no.3
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• pp.162-169
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• 2007

Immune activities of two different extracts of Kadsura japonica Dunal. by typical extraction processes using water and ethanol at 60 $^{\circ}$C and 100 $^{\circ}$C were compared to them by ultrasofication system and through traditional fermemtation process. The fermented broth Kadsura japonica Dunal. definitely improved the growth of human B and T cell up to 30% and 22%, respectively, compared to the control. The secretion of TNF-${\alpha}$ and IL-60 was also enhanced by the addition of the fermented broth, up to 35%. NK cell activation was significantly improved up to 1.4 times higher than the case of adding other extracts. It was also found that this broth could yield higher nitric oxide production from macrophage than Lipopolysaccharides (LPS). It can be concluded that Kadsura japonica has immune activities and, in general, the culture broth from a conventional fermentation has higher immune activities, possibly by yielding immuno-modulatory compounds, not existed in typcial extraction systems as the result of HPLC analysis.

• The Korean Journal of Pesticide Science
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• v.9 no.2
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• pp.173-180
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• 2005

This study was conducted of Korean native plants to screen herbicidal activity which could be used for the development of new natural herbicides. Eighty-one plants were collected from Wan and Juju islands in Korea and their methanol extracts were obtained. Heibicidal activities of the methanol extracts were determined by seed bioassay using rapeseed (Brassica napus L.) seedlings. Among eighty-one species, eleven plants were highly herbicidal ($GR_{50}$ < 1,000 ${\mu}g\;g^{-1}$): Abies koreana WILS., Anthemis nobilis L., Callicarpa mollis SIEB. et ZUCC., Cirsium setidens, Euonymus maackii RUPR., Euphorbia jolkini BOISS., Kadsura japonica DUNAL, Paeonia aliflora Pall var. tricocarpa BUNGE, Philadelphus tenuifolius RUPR. et MAXIM., Sapium sebiferum, Vicia angustifolia var. segetilis K. KOCH. Fifty plants were shown moderate herbicidal activity (1,000 ${\mu}g\;g^{-1}$ < $GR_{50}$ < 2,000 ${\mu}g\;g^{-1}$), however, twenty plants were not shown any herbicidal activity.