Abstract:
The marketing of antibiotics directly to animal owners and the intensification in recent years of the use of these drugs
without the recommendation of a veterinarian has led to the increasingly frequent presence of antibiotic residues in milk
that is intended either for human consumption or for obtaining dairy products. The use by processors of milk with
antibiotic residues is difficult to achieve. According to European Union food safety legislation, milk harvested from
cows treated with antibiotics must be collected separately, and isolated. It cannot be given for processing or human
consumption. Applying thermal treatment, especially pasteurization, to milk with antibiotic residues above the
maximum allowed limit has insignificant effects, processors have been convinced of this over the years. The interest of
the study for the detection of antibiotic residues in milk is very current, even if the waiting period after treating the cows
with antibiotics is recommended, often this period is not respected, the consideration being the significant economic
losses. The rapid strip test method was done with strip tests AuroFlow, which are designed for the simultaneous
detection of beta-lactams and tetracyclines. The working samples were represented by processed milk sold in
supermarkets and raw milk sold in agro-food markets in Iasi. The distribution of processed milk samples was 1 positive
sample each in 2 of the supermarkets where the samples were collected, these being in the percentage of 4%. UHTtreated milk in all 5 supermarkets did not show any positive tests. On the other hand, the sale of raw milk in the agrifood markets showed a percentage of 20% positive samples, out of several 25 samples examined, the rate is much
higher compared to processed milk.
