稀土水杨酸8-羟基喹啉三元配合物对大肠杆菌抑制作用的研究  

Study on Antibacterial Effects of the Ternary Complexes of Rare Earth with Salicylic Acid and 8-hydroxylquinoline on E.coli

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作  者:肖航英[1] 肖圣雄[1] 胡吉林[1] 刘浩[1] 尹智伟[1] 李强国[1] 

机构地区:[1]湘南学院化学与生命科学系,湖南郴州423000

出  处:《湘南学院学报》2013年第2期42-45,76,共5页Journal of Xiangnan University

基  金:国家自然科学基金项目(20973145);湖南省教育厅科研项目(11C1171);湖南省湘南稀贵金属配合物及其应用重点实验室开放课题重点项目(NO.2012XGJSZD03);湘南学院大学生研究性学习和创新性实验计划项目(湘南学院院发[2011]122号)

摘  要:为探究稀土水杨酸8-羟基喹啉三元配合物RE(sal)2hq(RE=Pr、Gd)对大肠杆菌的抑菌效果.实验采用杯碟法和二倍稀释法,通过测量抑菌圈直径探讨了两种配合物及其配体的抑菌能力.结果表明:配体8-羟基喹啉、配合物RE(sal)2hq(RE=Pr、Gd)都具有很好的抑菌效果,而配体水杨酸及稀土(RE=Pr、Gd)离子抑菌效果都不明显.配合物Pr(sal)2hq、Gd(sal)2hq和配体8-羟基喹啉的最小抑菌浓度MIC值分别为:0.5 mmo/lL、1 mmo/lL和1 mmo/lL.最小杀菌浓度MBC值分别为:4mmo/lL、5mmo/lL和14mmo/lL.初步推测稀土水杨酸8-羟基喹啉三元配合物可以作为药物运用于有害大肠杆菌的防治中.To study the antibacterial effects of temary rare earth complexes with salicylic acid and 8 - hydroxy- lquinoline on Escherichia coli. This experiment adopted cylinder plate method and double - dilution method to explore the antibacterial effects of the ternary complexes of RE(sal)2hq(RE = Pr, Gd) and their ligand on Escherichia coli, by measuring ACD. The result showed that the ligand of 8 - hydroxylquinoline and complexes of RE(sal)2hq(RE = Pr, Gd) had good antibacterial effect, respectively. But the antibacterial effects of the ligand of salicylic acid and rare earth ions (RE = Pr, Gd) were not obvious. We determined that the minimum inhibitory concentrations (MIC) of RE(sal)2hq (RE = Pr,Gd) and 8 - hydroxylquinoline were 0.5 mmol/L, 1 mmol/L and 1 mmol/L, respectively. The minimum bactericidal concentrations(MBC) were 4 mmol/L, 5 mmol/L and 14 mmol/L, respectively. We preliminarily speculated that RE(sal)2hq (RE = Pr, Gd) can apply in the prevention and control of harmful Escherichia coli.

关 键 词:稀土配合物 大肠杆菌 杯碟法 最小抑菌浓度 最小杀菌浓度 

分 类 号:Q939.92[生物学—微生物学] O614.33[理学—无机化学]

 

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