CAJ | 학술논문

木兰科植物木莲(Manglietia fordiana)、含笑(Michelia figo)和北美鹅掌楸(Liriodendrontulipifera)是中国的传统药用植物.本文通过对抑菌圈大小和最小抑菌浓度的测定,研究了这3种植物茎、叶的乙醇粗提物的抑菌活性.结果表明,大部分提取物对革兰氏阳性菌有较好的抑制效果,个别提取物(如木莲茎和含笑茎)能抑制革兰氏阴性菌的生长,所有提取物均无抑制病原真菌的作用.
목란과식물목련(Manglietia fordiana)、함소(Michelia figo)화북미아장추(Liriodendrontulipifera)시중국적전통약용식물.본문통과대억균권대소화최소억균농도적측정,연구료저3충식물경、협적을순조제물적억균활성.결과표명,대부분제취물대혁란씨양성균유교호적억제효과,개별제취물(여목련경화함소경)능억제혁란씨음성균적생장,소유제취물균무억제병원진균적작용.
Manglietia fordiana, Michelia figo and Liriodendron tulipifera (Magnoliaceae) are traditional medicines in China. The antibacterial and antifungal activities of crude ethanolic extracts from stems and leaves of the three species were investigated using modified agar diffusion method and minimum inhibitory concentration (MIC) method. The results showed that all stem extracts of the three species were more active than leaf extracts. Most of the leaf extracts except Manglietia fordiana were proved to be active against Gram positive pathogenic bacteria Staphylococcus aureus, Nocardia asteroides and Bacillus subtilis. Gram positive pathogenic bacterium Streptococcus faecalis was only inhibited by the extract of Liriodendron tulipifera stem. Only a few extracts (stems of Manglietia fordiana and Michelia figo) were active against Gram negative bacteria. All the extracts in this study could not inhibit Enterobacter cloacae. Stem extract of Manglietia fordiana was active to B. dysenteriae, Escherichia coli and B. pyocyaneus; Stem and leaf extracts of Michelia figo possessed relatively high antibacterial activity against Escherichia coli.