The effect of neomycin and streptomycin on the electrical polarisability of aqueous suspensions of Escherichia coli.

摘要: Abstract Aqueous suspensions of bacteria scatter light strongly. In addition, the exhibit strong induced dipole moments in an electric field. this note we report how, by measuring intensity scattered light, polarisability (α) Escherichia coli could be monitored as small quantities antibiotics were added to suspensions. The effect presence quite antibiotic on electrical polarisability, which gave rise dipole, was dramatic. From hypothesis that α had its origins bacteria-solvent interface, a theory is presented adequately accounts for both and changes these antibiotics. study taken suggest molecules adsorbed bacterial surface thereby reducing charge. This turn reduces number counterions apparent moment. Because electric-field scatterign method quick sensitive α, it may prove valuable if action cell microorganism surfaces.