Stavreva Veselinovska, Snezana and Zivanovic, Jordan and Todorovska, Aleksandra (2013) The number of somatic cells and microorganisms – indicators of the quality of raw cow milk in the Republic of Macedonia. Proceedings of Seminar of Ecology 2013. pp. 197-203. ISSN 978-954-2961-75-8
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Abstract
Aim: The number of somatic cells and the number of microorganisms are the criteria for assessing whether raw milk is in accordance with the Regulation on specific requirements for safety and hygiene and manner for performing official controls on milk and dairy products - Official Gazette of the Republic of Macedonia 157/2007.
Material and methods: In order to determine the NMO, 2065 samples were used, and for determining the NSC 1625 samples were taken from farms all over the territory of the Republic of Macedonia. The samples were delivered in sterile plastic sealed cups with a capacity of 50 ml in which previously there was preservative added Azidiol (Sigma – Aldrich) in the dose of 0,25 ml, and then they were transported at a temperature of +4.0 degrees Celsius. For counting of the total number of microorganisms Bactoscan 8000 was used. The procedure for counting the NSC was carried out in accordance with the accredited method ISO 17025-FVM-SOP-398 with references from ISO 13366-2:2006/.
Results: Only 704 samples, i.e. 42,79% of the samples meet the criteria of the European Union (Directive 92/46 EEC) in relation to the maximum number of somatic cells in the milk. From the results of counting the somatic cells we can conclude that 682, i.e. 41,45% of the samples have over 600,001 somatic cells per ml, meaning that they do not meet the criteria of the Rulebook from 2008. 936 samples, i.e. 58,54% meet the criteria for raw milk for 2008.
Conclusions: NMO directly depends on the initial contamination of milk with microorganisms from the milk gland and microorganisms (contaminants) from the surroundings (afterbirth, urine, feces) that can populate the surfaces of the milking equipment and surfaces that milk comes into contactwithin a considerable number. Minimizing the milk contamination level from these sources would significantly prevent the level of psychrophilic microorganisms.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | somatic cells, microorganisms, milk, contamination. |
| Subjects: | Natural sciences > Earth and related environmental sciences |
| Divisions: | Faculty of Educational Science |
| Depositing User: | Snezana Stavrova Veselinova |
| Date Deposited: | 10 Feb 2014 12:29 |
| Last Modified: | 14 May 2014 06:43 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/9158 |
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