[Model studies of milk containing inhibitory substances. I. Sensitivity of microbiological tests for detection of inhibitory substances and studies of turbidity changes in milk].
In the present studies use was made of raw milk derived from a model farm in the Olsztyn voivodeship. Washing and washing-disinfecting agents: Mirax, Bis, Radion, Iosan CP, Rudlak and Ixi, as well as crystalline penicillin were added to milk. Their lowest concentrations inhibiting growth of indicator strain (MIC): Bacillus stearothermophilus var. calidolactis C 953, were determined by two microbiological tests. Moreover, the changes in light diffusion by milk, caused by the applied inhibitory substances, were examined. It was found that the microbiological tests for the determination of the lowest inhibitory concentration of the sanitization agents and of penicillin were much more sensitive in the case of milk with a 0.05% fat content, as compared with whole milk.
Wieczorek
J
J
Zakładu Higeny Zywności i Zywienia Instytutu Zywienia Człowieka.
Wieczorek
Z J
ZJ
Smoczyński
S S
SS
D000818:Animals; D001407:Bacillus / Q000187:drug effects*; D004202:Disinfectants / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D008892:Milk / Q000382:microbiology*; D010406:Penicillins / Q000494:pharmacology*; D011044:Poland; D012680:Sensitivity and Specificity
D004202:Disinfectants; D010406:Penicillins
Badania modelowe mleka zawierajacego substancje hamujace. I. Czułość testów mikrobiologicznych w wykrywaniu substancji hamujacych oraz badania zmian zmetnienia mleka.