Health  Vol.6 No.16 , September 2014
An Empirical Study on Microbial Load and Acidity in Raw Milk Produced in Malayer and Nahavand Cities, Iran 2012
Abstract: Milk is very susceptible for growth and development of many microorganisms because it is rich in nutrients and has suitable condition. Thus, it is very vital to respect sanitary conditions at all stages of production and transport of raw milk. The objective of the present investigation was to determine the total bacterial, and acidity in raw milk from milk collection centers in Malayer and Nahavand cities. 52 milk samples were collected from 13 centers in summer 2012 and were analyzed according to standard methods. None of the raw milk samples under investigation, had superior or grade 1 quality. Only 7.7% of the samples were classified as raw milk with grade 2 quality and 92.3% were non-standard. The mean of microbial total count in base was 3.8 × 107 CFU/ml and average acidity in the samples was 0.163. The city of Tochqhaz and Aliabade-Damagh has the lowest and the highest microbial total count. In general the result of this study showed unsatisfactory conditions of milk in the milk collection centers of the Malayer and Nahavand cities.
Cite this paper: Rezaei, M. , Behzadi, A. , Malekirad, A. , Fattahi, A. , Farahzadi, M. , Sarmadi, M. , Aghamirlou, H. and Fallahzadeh, R. (2014) An Empirical Study on Microbial Load and Acidity in Raw Milk Produced in Malayer and Nahavand Cities, Iran 2012. Health, 6, 2184-2189. doi: 10.4236/health.2014.616253.

[1]   Yarahmadi, B., Eslami, M., Mahdavi, H. and Moayedi nejad, A. (2006) The Survey of Bacteriological Quality Raw Milk and Seasonal Affecting factors in Lorestan province. Animal Sciences Journal, 70, 28-33.

[2]   Yarahmadi, B., Mahdavi, H. and Moayedi nejad, A. (2008) Evaluation of Total Microbial Contamination, Coliforms and Escherichia coli of Raw Milk from Milking until Delivered to the Factory in Lorestan Province. Lorestan Medical University Journal, 10, 67-87.

[3]   Kamal zade, L., Kamal zade, A. and Heydar nejad, A. (2010) Total Bacterial, Coliforms and the Staphylococcus Aureus Bacteria Count of Raw Milk (from Farms to the Processing Factory), and Pasteurized Milk in Khozestan Province. The Fourth Congress on Animal Science, Karaj, 15-16 September 2010, 282-288.

[4]   Aleksieva, V. and Krushev, B. (1981) Quality of Raw Cow’s Milk. Veterinarno-Meditsinski Nauki, 18, 65-71.

[5]   Imami meybodi, M.A., Mahdavi adali, H.R., Shokohmand, M., Karimi, A. and Mophidi, M.R. (2010) The Survey of Microbial Load and Raw Milk Additives in Yazd Province. The Fourth Congress on Animal Science, Karaj, 15-16 September 2010, 204-209.

[6]   ISIRI (2008) Microbiology of Milk and Its Products. Institute of Standards and Industrial Research of Iran, 2406.

[7]   Hashemi, M. and Shekarforosh, M.S.H. (2007) The Survey of Microbial and Chemical Changes of Raw Milk from Different Stages of Production until Dairy Factory in the Fars Province. Iranian Journal of Veterinary Medicine, 3, 81-87.

[8]   Khosravi, M. and Ghaznavi, A. (2008) The Survey of Microbial Load and PH Traditional Animal Husbandry Milk Collected from Kashmar City in Different Seasons. Journal of Modern Agricultural, 4, 34-37.

[9]   Ebrahimi, M.K. (2012) Evaluate the Microbial Quality of Raw Milk in Dairy Cattle Units and Milk Collection Centers in Mahabad City. The First National Congress of Dairy and Related Industries, Qom, 17 February 2012, 79-84.

[10]   Desai, P. and Natarajan, A. (1981) Bacteriological Quality of Raw Milk Collected from Societies for Transportation to Chilling Centres. Cheiron, 10, 149-150.

[11]   Holm, C., Mathiasen, T. and Jespersen, L. (2004) A Flow Cytometric Technique for Quantification and Differentiation of Bacteria in Bulk Tank Milk. Journal of Applied Microbiology, 97, 935-941.

[12]   Van Schaik, G., Green, L.E., Guzman, D., Esparza, H. and Tadich, N. (2004) Risk Factors for Bulk Milk Somatic Cell Counts and Total Bacterial Counts in Smallholder Dairy Farms in the 10th Region of Chile. Preventive Veterinary Medicine, 67, 1-17.

[13]   Godefay, B. and Molla, B. (2000) Bacteriological Quality of Raw Cow’s Milk from Four Dairy Farms and a Milk Collection Centre in and around Addis Ababa. Berliner und Münchener tierarztliche Wochenschrift, 113, 276-278.

[14]   Rezaei, M., Karimi, F., Yahyaei, M., Javdani, H., Shahabi, A. and Farahi, A. (2013) A Survey of Microbial Total Count and Prevalence of Escherichia coli in Raw Milk in Markazi Province, Iran. Research Opinions in Animal and Veterinary Sciences, 3, 474-477.

[15]   Fani, A., Rezaei, M., Moini, A., Fani, P., Mirzajani, P., Malekirad, A.A., et al. (2013) Aflatoxin Occurrence in Nuts Consumed in Arak, Iran. International Journal of Food Safety, 4, 91-97.

[16]   Rezaei, M., Shariatifar, N., Jahed Khaniki, G. and Javadzadeh, M. (2013) Nitrite in Hamburgers in Arak, Iran. Food Additives & Contaminants: Part B, 6, 285-288.

[17]   Rezaei, M., Dastjerdi, H.A., Jafari, H., Farahi, A., Shahabi, A., Javdani, H., et al. (2014) Assessment of Dairy Products Consumed on the Arak Market as Determined by Heavy Metal Residues. Health, 6, 323-327.

[18]   Rezaei, M., Karimi, F., Parviz, M., Behzadi, A.A., Javadzadeh, M., Mohammadpourfard, I., Fallahzadeh. R.A., et al. (2014) An Empirical Study on Aflatoxin Occurrence in Nuts Consumed in Tehran, Iran 2013. Health, 6, 649-653.

[19]   Rezaei, M., Mohammadpourfard, I., Malekirad, A.A., Ghasemikhah, R. and Sayadi, M. (2014) Aflatoxin Contamination of Feed Materials in Qom Province, Iran. Iranian Journal of Toxicology, 8, 1025-1027.

[20]   Ombui, J.N., Kaburia, H.F., Macharia, J.K. and Nduhiu, G. (1994) Coliform Counts and Escherichia coli in Raw Commercial Milk from Dairy Farmers in Kiambu District, Kenya. East African Medical Journal, 71, 635-639.

[21]   Arab ameri, M., Zolfaghari, M., Nazarian, A., Norian, A. and Jalali, A. (2009) Study of Bacterial Contamination of Raw and Pasteurized Milk in the Shahrod City in 2008. Journal of Applied Microbiology, 97, 935-943.

[22]   Lopes, A.C. and Stamford, T.L. (1997) Critical Control Points in the Pasteurized Milk Processing Fluxogram. Archivos Latinoamericanos de Nutrición, 47, 367-371.

[23]   Francis, A.J., Nimmo, G.R., Efstratiou, A., Galanis, V. and Nuttall, N. (1993) Investigation of Milk-Borne Streptococcus zooepidemicus Infection Associated with Glomerulonephritis in Australia. Journal of Infection, 27, 317-323.