The thermokinetic properties of the action of two kinds of lanthanum complexes [La(Hsal)2·(tch)]·2H2O and La(Hsal)2·(hq)(Hsal= C7H5O3,tch= C4H6NO2S,hq =C9H6NO)on growth metabolism of Escherichia coli we...The thermokinetic properties of the action of two kinds of lanthanum complexes [La(Hsal)2·(tch)]·2H2O and La(Hsal)2·(hq)(Hsal= C7H5O3,tch= C4H6NO2S,hq =C9H6NO)on growth metabolism of Escherichia coli were studied by a TAM air isothermal calorimeter at 37.00℃.The maximum heat output power Pmax,growth rate constant k,generation timestG,inhibitive ratio I(%) and half inhibition concentration cI,50,were obtained respectively.The results showed that complex[La(Hsal)2·(tch)]·2H2O possessed the bi-directional biological effect.It inhibited the growth of the E.coli at lower concentration but stimulated the growth at higher concentration.The complexes La(Hsal)2·(hq) possessed inhibitory effect.Inhibitory effect of La(Hsal)2·(hq)(cI,50=1.81 mg·L-1) was stronger than that of [La(Hsal)2·(tch)]·2H2O(CI,50=9.78mg·L-1).展开更多
By using the stopped flow experimental method of LKB 2277 Bioactivity Monitor, thermograms of sever species of anaerobes have been measured under anaerobic condition. According to the thermokinetic model of the growth...By using the stopped flow experimental method of LKB 2277 Bioactivity Monitor, thermograms of sever species of anaerobes have been measured under anaerobic condition. According to the thermokinetic model of the growth of bacteria, the thermokinetic properties of Bacteroides distasonis: multiplication rate constants, activation energy,the entropy of activation, Gibbs function of activation have been calculated.展开更多
文摘The thermokinetic properties of the action of two kinds of lanthanum complexes [La(Hsal)2·(tch)]·2H2O and La(Hsal)2·(hq)(Hsal= C7H5O3,tch= C4H6NO2S,hq =C9H6NO)on growth metabolism of Escherichia coli were studied by a TAM air isothermal calorimeter at 37.00℃.The maximum heat output power Pmax,growth rate constant k,generation timestG,inhibitive ratio I(%) and half inhibition concentration cI,50,were obtained respectively.The results showed that complex[La(Hsal)2·(tch)]·2H2O possessed the bi-directional biological effect.It inhibited the growth of the E.coli at lower concentration but stimulated the growth at higher concentration.The complexes La(Hsal)2·(hq) possessed inhibitory effect.Inhibitory effect of La(Hsal)2·(hq)(cI,50=1.81 mg·L-1) was stronger than that of [La(Hsal)2·(tch)]·2H2O(CI,50=9.78mg·L-1).
文摘By using the stopped flow experimental method of LKB 2277 Bioactivity Monitor, thermograms of sever species of anaerobes have been measured under anaerobic condition. According to the thermokinetic model of the growth of bacteria, the thermokinetic properties of Bacteroides distasonis: multiplication rate constants, activation energy,the entropy of activation, Gibbs function of activation have been calculated.
