Effect of some chemical sanitizers on microbial quality of dairy farm milk

الملخص EN

Biofilm formation on milk equipment is a well-known phenomenon and ; has caused pollution, safety hazards and substantial economic loss.

's study was undertaken to examine the efficacy of the sanitizers chiding iodophore, quaternary ammoriium compounds and calcium chlorite against total mesopUlic count (TMC), total psychrophilic unt (TPC), total thermoduric count (TTC) and total coliform count W ml of the examined raw milk samples.

Additionally the sanitizers ere also tested against Escherichia coli strains isolated from the examined milk samples.

The result shows that psychotropic bacteria-were more resistant on sanitizer used than thermoduric bacteria.

Among the three commercially sanitizer tested, quaternary ammonium compound was the most potent against microorganisms after 20 min exposure time using warm water.

However, calcium hypochlorite and iodophore showed a lower effect on the bacterial groups.

The resistance of Escherichia coli strains to the sanitizer was strain dependent.

It was concluded that the resistances of microbes to different sanitizers should be taken into account when planning the cleaning of milking equipment.