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Susceptibility of faecal Streptococcus group to some surface-active agents
Zentralblatt Fur Bakteriologie, Parasitenkunde, Infektionskrankheiten Und Hygiene. Zweite Naturwissenschaftliche Abteilung: Mikrobiologie Der Landwirtschaft Der Technologie Und Des Umweltschutzes
|January 1, 1980
Summary
Hyamine 2389 demonstrated the highest antimicrobial activity against Streptococcus strains, with 96% susceptibility in liquid medium. Most strains were resistant to Nonidit P 42, highlighting varying disinfectant efficacies.
Area of Science:
- Microbiology
- Antimicrobial Susceptibility Testing
Background:
- The Streptococcus group is a common target for antimicrobial agents.
- Understanding the efficacy of surface-active agents is crucial for disinfection protocols.
Purpose of the Study:
- To evaluate the susceptibility of 75 Streptococcus strains to three surface-active agents.
- To compare the antimicrobial activity of Hyamine 2389, Teepol 610, and Nonidit P 42.
Main Methods:
- Antimicrobial susceptibility testing of 75 Streptococcus strains.
- Incorporation of surface-active agents into solid (nutrient agar) and liquid media.
- Determination of minimum inhibitory concentrations (MICs) or effective concentrations.
Main Results:
- Hyamine 2389 showed the highest activity, with 96% of strains affected at 24 ppm in liquid medium.
- Teepol 610 demonstrated activity, with a critical concentration of 360 ppm.
- Nearly all strains exhibited high resistance to Nonidit P 42, regardless of medium type.
Conclusions:
- Hyamine 2389 is a potent agent against a broad spectrum of Streptococcus strains.
- Nonidit P 42 is largely ineffective against the tested Streptococcus group.
- Susceptibility varies among Streptococcus species, with implications for disinfectant selection.