The effect of polyphosphates on streptococci isolated from mastitis cases.
The effect of 0.01, 0.02, 0.03, 0.05, 0.6, 0.8 and 0.9% of polyphosphate mixture on 5 strains of Streptococcus agalactiae, 2 strains of Streptococcus dysgalactiae and 3 strains of Steptococcus uberis in blood agar in vitro and in milk was examined. It was found that the growth of all strains of the above mentioned bacteria was completely inhibited by 0.03% phosphate mixture in blood agar. In milk, however, the amount of polyphosphate mixture necessary for total inhibition was, from 0.6 to 0.9%, depending on the strain.
Radkowski
M
M
Chair of Food Hygiene, Division of Veterinary Protection of Public Health, Faculty of Veterinary Medicine, University of Warmia and Mazury, Oczapowskiego 14, 10-957 Olsztyn Kortowo II, Poland. rad@uwm.edu.pl
D000818:Animals; D002417:Cattle; D005260:Female; D008414:Mastitis, Bovine / Q000382:microbiology*; D008826:Microbial Sensitivity Tests; D008892:Milk / Q000382:microbiology; D011122:Polyphosphates / Q000494:pharmacology*; D013290:Streptococcal Infections / Q000382:microbiology / Q000662:veterinary; D013291:Streptococcus / Q000145:classification / Q000187:drug effects* / Q000302:isolation & purification
D011122:Polyphosphates