Zanieczyszczenie mikrobiologiczne oraz substancje hamujace w mleku spozywczym z rejonu Olsztyna

Samples of milk were examined for the presence of microbiological contaminations and antibiotic residues and other inhibitory substances. Out of 281 samples under study aerobic bacteria were found in 40 samples and E. coli titers were higher than those which are commonly accepted in 56. The presence of antibiotic residues and other infibitory substances was tested by means of two methods, i.e. Delvotest-SP and Petri dish test produced by Biolacty. In 51 samples inhibitory substances were found by Delvotest but they were not revealed by the Petri dish test. The examinations showed a poor quality of milk and frequent occurrence of antibiotic residues and other inhibitory substances.