Microcalorimetric Study of the Action of Yb^(3+) Ion on the Growth of Staphylococcus aureus  

作　　者：侯安新 薛智 刘义 屈松生 

机构地区：[1]Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China

出　　处：《Chinese Journal of Chemistry》2003年第9期1146-1149,共4页中国化学（英文版）

基　　金：theNaturalScienceFoundationofHubeiProvince (No .2 0 3130 497) ,theNationalNaturalScienceFoundationofChina (No .30 170 0 10 )andtheTeachingandScientificResearchAwardProgramforOutstandingYoungTeachersinHighEducationIn stituteofChineseEducationalMinist

摘　　要：A microcalorimetric method was used to evaluate the action of Yb 3+ ions onthe growth metabolism of Staphylococcus aureus. The power-time curves of the growth metabolism of Staphylococcus aureus and the action of Yb 3+ ions were obtained by using stopped-flow method at 37 ℃. For evaluation of the action, the growth rate constants (k 1 and k 2) for the log phase 1, log phase 2, and the total heat effect (Q total) for Staphylococcus aureus were determined. The results show that Yb 3+ ions at low concentrations have the stimulatory effect on Staphylococcus aureus and that Yb 3+ions at higher concentration could inhibit its growth.A microcalorimetric method was used to evaluate the action of Yb 3+ ions onthe growth metabolism of Staphylococcus aureus. The power-time curves of the growth metabolism of Staphylococcus aureus and the action of Yb 3+ ions were obtained by using stopped-flow method at 37 ℃. For evaluation of the action, the growth rate constants (k 1 and k 2) for the log phase 1, log phase 2, and the total heat effect (Q total) for Staphylococcus aureus were determined. The results show that Yb 3+ ions at low concentrations have the stimulatory effect on Staphylococcus aureus and that Yb 3+ions at higher concentration could inhibit its growth.

关 键 词：MICROCALORIMETRY Staphylococcus aureus Yb    3+ duplex functions THERMOKINETICS 

分 类 号：Q935[生物学—微生物学]