Model studies of milk containing inhibitory substances. Pt. 1. Sensitivity of microbiological tests for detection of inhibitory substances, and studies of turbidity changes in milk
1993
Wieczorek, J. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Inst. Zywienia Czlowieka) | Wieczorek, Z. | Smoczynski, S.
Washing and washing-disinfecting agents: Mirax, Bis, Radion, Iosan CP, Rudlak and Ixi, as well as crystaline penicillin were added to raw milk brought from a model farm in the Olsztyn voivodeship. 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 percent fat content, as compared with whole milk
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