Development of a regime of disinfection of milking equipment and milk inventory with the acid detergent “Milkodez”
The material for the reseach were the washes that were taken from the milk utensils, portable milking machines, surface of the cooler, milking unit with the UDM 200 “Bratslavchanka” and milking parlor “Yalinka”. Washing of milking equipment and milk equipment was carried out with 0.5% hot solution
(70 ± 5 ℃) of alkaline “Hyprochlor” and acid detergents disinfectant “Milkodez” and “Hypracid”. Processing of milk dishes, portable milking machines and cooler with acidic means was carried out for 2 and 5 minutes, cooler for 5 and 10 minutes, and installations of milking machine with UDM 200 “Bratslavchanka” milking parlor and “Yalinka” milking parlor – for 15 minutes by pumping the solution several times using a vacuum unit. The equipment, sanitary treatment of which was carried out by means of “Hyprochlor” and “Hypracid”, used as control. The disinfectant effect of the investigated agents was evaluated by the number of mesophilic aerobic and optional anaerobic microorganisms (MAOanM) in washings selected after washing and in milk. It was found that for the use of “Milkodez” dairy utensils for sanitary treatment, the amount of MAOanM on the surface of milking buckets and glass jars was smaller compared to their treatment with “Hypracid”, and the difference was for 2 and 5 min respectively 86.5% and 57.7% and 97.3 and 95.7%, respectively. Microbial contamination of fresh milk was reduced by 50.5% and 91.3%, respectively. The smallest amount of MAОanM in washes from milking rubber, milk hose, collector and milking tank of portable milking machines was in 5 minutes of their washing “Hyprochlor” and “Milkodez” and were respectively 0.6, 0.3, 0.5 and 0.2 thousand CFU/sm3, which allowed to obtain milk with the content of microorganisms 26 thousand CFU/sm3. The number of microorganisms per 1 sm3 of flushing from the walls of the cooler for 10 min of sanitary treatment by means of “Hyprochlor” and “Hypracid” was 5.8 thousand CFU/sm3, while for 5 min of exposure of the preparations “Hyprochlor” and “Milkodez” their number was 1.1 thousand CFU/cm3, and for 10 min – 0.4 thousand CFU/cm3. Thus, the number of microbial cells in 1 sm3 of milk was respectively 248000, 41000 and 29000 CFU. It is proved that for the sanitary treatment of UDM 200 “Bratslavchanka” and milking parlor “Yalinka” it is advisable to use the acid detergent disinfectant “Milkodez”, which provided 11.7 and 20.3 times less total amount of microorganisms in the washes from the elements and in 3.6 and 7.1 times in fresh milk, compared to “Hypracid”. The optimal mode of application of 0.5% solution of acid detergent disinfectant “Milkodez” for the effective sanitary treatment of milk utensils is 5 minutes, milking equipment – 10 minutes, and for the treatment of milking installations with milk pipeline and milking parlor – 15 minutes, after the previous washing them with an alkaline agent “Hyprochlor”.
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