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도동선,민병선,배기환 충남대학교 약학대학 의약품개발연구소 1996 藥學論文集 Vol.12 No.-
Two constituents were isolated as the antibacterial principles from the methanolic extract of Crassirhizomae Rhizoma against Streptococcus mutans OMZ176 which is known to be a strong cariogenic bacterium. They were identified as flavaspidic acid PB and flavaspidic acid AB by means of physicochemical methods. They exhibited strong antibacterial activity and the minimal inhibitory concentration (MIC) value was 6.3 ㎍/㎖.
충치원생세균 Streptococcus mutans OMZ 176에 대한 약용식물 추출물의 항균활성
도동선,이상명,나민균,배기환 한국생약학회 2002 생약학회지 Vol.33 No.4
This study was carried out to develop anticariogenic agents from natural products, the methanol and ethyl acetate extracts of 105 medicinal plants were tested for the antimicrobial activity against a cariogenic bacterium, Streptococcus mutans OMZ 176. Among them, the Aristolochia contorta, Dryopteris crassirhizoma, Eugenia caryophyllata, Hemerocallis fulva, Pinellia ternata, Pyrola japonica, and Scrophularia buergeriana showed significant antimicrobial activity.
도동선(Dong Sun Do),민병선(Byung Sun Min),배기환(Ki Hwan Bae) 대한약학회 1996 약학회지 Vol.40 No.4
Two constituents were isolated as the antibacterial principles from the methanolic extract of Crassirhizomae Rhizoma against Streptococcus mutans OMZ176 which is known to be a strong cariogenic bacterium. They were identified as flavaspidic acid PB and flavaspidic acid AB by means of physicochemical methods. They exhibited strong antibacterial activity and the minimal inhibitory concentration(MIC) value was 6.3mcg/ml
배기환,민병선,도동선,김남수,양기종,안병준 충남대학교 약학대학 의약품개발연구소 1992 藥學論文集 Vol.8 No.-
For the research of cytotoxic natural products, 50 medicinal plants were extracted with benzene and methanol, separately, and screened against L1210 cells. From the results(Table I), 6 samples showed cytotoxicity both in benzene and methanol extracts of 17 samples in benzene extracts and 3 samples in methanol extracts, respectively. Generally, the cytotoxicity exhibited high frequency (34%) in benzene extract but low frequency in methanol extract(6%), it meant that active cytotoxic components had less polarity. ED_50 values less than 10 ㎍/㎖ were observed in 17 medicinal plants.
배기환(Ki Hwan Bae),민병선(Byung Sun Min),도동선(Dong Sun Do),김남수(Nam Soo Kim),양기종(Gi Jong Yang),안병준(Byung Zun Ahn) 대한약학회 1992 약학회지 Vol.36 No.5
For the research of cytotoxic natural products, 50 medicinal plants were extracted with benzene and methanol, separately, and screened against L1210 cells. From the results(Table I), 6 samples showed cytotoxicity both in benzene and methanol extracts of 17 samples in benzene extracts and 3 samples in methanol extracts, respectively. Generally, the cytotoxicity exhibited high frequency (34%) in benzene extract but low frequency in methanol extract (6%), it meant that active cytotoxic components had less polarity. ED50 values less than 10mcg/ml were observed in 17 medicinal plants.