Justification of replacement of pasteurization equipment in dairy

• Autorzy: Janzekovic M. , Mursec B. , Vindis P. , Cus F.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The purpose of this paper is to study the influence of new equipment on the effect of pasteurization in the department for pasteurization. The total bacterial count (TBC) in receiving raw cow milk and after termical treatment-pasteurization has been measured. Design/methodology/approach: The measurements were performed with old Alfa Laval Pasteur from year 1982 and after replacement with new Fischer pasteur 43 year 2006. The line between receiving tank to pasteur in dairy remain the same. The daily sampling and analyses of finale receiving tanks were made on department for receiving milk for October 2005 (93 analysis) and December 2006 (96 analysis). Findings: The raw milk was in October 2005 on average for 10,6% worse quality (calculation of average value of TBC per ml), then in December 2006. The effect of pasteurization was after test, at working old equipment only 32,25%, at working new equipment was 100,00%. Research limitations/implications: The new equipment for pasteurization allows the production of safe milk products in accordance with hazard analyses of critical control points (HACCP). Practical implications: The effect of pasteurization with the new pasteur was perfect. At internal margin 95% this level overreach all 31/31 analysing samples. We get more stable production and reduce expense of steam, which serves for reaching of appropriate temperature of pasteurization. Originality/value: to the use of new equipment allowing 20 second maintaining time of pasteurization the pasteurization temperature has been reduced from 78*C to 76*C and, thus, the profitability of the pasteurization process has been improved.

Słowa kluczowe

EN

technological devices and equipment; dairy; energy saving; effect of pasteurization

PL

energooszczędność; efekt pasteryzacji

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 26, nr 2
• Strony: 191--194
• Opis fizyczny: Bibliogr. 15 poz., il.

Twórcy

autor

Janzekovic M.

autor

Mursec B.

autor

Vindis P.

autor

Cus F.

• Faculty of Agriculture, University of Maribor, Vrbanska 30, 2000 Maribor, Slovenia,

Bibliografia

• [1] A. Maher, The influence of new equipment on microbiological count of milk in dairy Celeia, Graduation thesis, Maribor (2007) 40-52.
• [2] M. Janzekovic, C. Rozman, The Milk quality and feasibility analysis of loose housing dairy cows-a case study. Mljekarstvo 56 (2006) 59-66.
• [3] P. Walstra, T. J. Geurts, A. Nooman, A. Jellema, B. MAJS, Principles of milk properties and processes, Dairy Technology (1999) 727-767.
• [4] M. Janzekovic, B. Mursec, I. Janzekovic, F. Cus, P. Vindis, Applicability of polar sport tester for cattle heart rate measurements, Proceedings of the 12th International Scientific Conference CAM3S'2006, Gliwice-Zakopane, 2006, 5-8, (CD-ROM).
• [5] J. Cleveland, T. J. Montville, I. F. Nes, M. L. Chikindas, Safe natural antimicrobials for food preservation, International Journal of Food Microbiology 71 (2001) 1-20.
• [6] R. Bibek, Fundamental Food Microbiology, 2 nd ed. CRC Press Boca Raton, London, New York, (2001) 29-412.
• [7] P. Vindis, B. Mursec, M. Janzekovic, F. Cus, Processing of soybean meal into concentrates and testing for Genetically Modified Organism (GMO), Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 507-510.
• [8] J. Garbutt, Essentials of food microbiology, London, Sydney, Auckland, Arnold (1997) 251-296.
• [9] J. L. Bergere, J. Lenoir, Cheese manufactoring accidents and cheese defects, Cheesemaking from science to quality assurance (2000) 477-508.
• [10] J. V. Chambers, The microbiology of raw milk, Dairy Microbiology Handbook: The microbiology of milk and milk products (2002) 39-90.
• [11] M. Janzekovic, B. Mursec, F. Cus, A. Ploj, I. Janzekovic, U. Zuperl, Use of machines for liquid manure aerating and mixing, Journal of Materials Processing Technology 162-163 (2005) 744-750.
• [12] B. Mursec, M. Janzekovic, F. Cus, U. Zuperl, Comparison of rollers after sowing of buckwheat, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 269-272.
• [13] C. P. Champagne, R. R. Laing, D. Roy, A. A. Mafu, M. W. Griffiths, Psyhrotrophs in dairy products: their effects and their control, Critical Reviews in Food Science and Nutrition 34 (1994) 1-30.
• [14] H. Singh, O. J. McCarthy, J. A. Lucey, Physico-chemical properties of milk, Advances Dairy Chemistry 3 (1997) 469-518.
• [15] B. Mursec, F. Cus, Integral model of selection of optimal cutting conditions from different databases of tool makers, Journal of Materials Processing Technology 133 (2003) 158-165.