EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK
Ghanem, T., Omar, M. (2010). EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK. EKB Journal Management System, 27(2), 737-745. doi: 10.21608/mjae.2010.105941
T.H. Ghanem; M.A.M Omar. "EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK". EKB Journal Management System, 27, 2, 2010, 737-745. doi: 10.21608/mjae.2010.105941
Ghanem, T., Omar, M. (2010). 'EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK', EKB Journal Management System, 27(2), pp. 737-745. doi: 10.21608/mjae.2010.105941
Ghanem, T., Omar, M. EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK. EKB Journal Management System, 2010; 27(2): 737-745. doi: 10.21608/mjae.2010.105941

EFFECT OF MICROWAVE AND SOME TREATMENTS ON MICROBIAL INACTIVATION RATE OF MILK

Misr Journal of Agricultural Engineering
Article 20, Volume 27, Issue 2, April 2010, Page 737-745  XML PDF (418.69 K)
Document Type: Original Article
DOI: 10.21608/mjae.2010.105941
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Authors
T.H. Ghanem1; M.A.M Omar2
1Associate Prof., Agric. Eng.. Fac. of Agric., Al-Azhar Univ. (Cairo), Egypt.
2Associate Prof., Dairy Science Dept. Faculty of Agric.,Al-Azhar Univ.(Cairo), Egypt.
Abstract
The aim of the present work is to study the effect of three different microwave power levels of 285, 385 and 470 W and alternating mixed treatments (20 seconds in microwave and 20 seconds sudden cooling) repeated one, two and three times on the total microbial counts (CFU/g) of milk . It was found that as the microwave power increases the total microbial counts decreases from 3.6x1010 to 2.4x104 CFU/g. Insignificant differences were found between 385 and 470 W for the pure microwave treatments. The decimal reduction time were 10.36 s, 7.87 and 7.49 s for the three power levels respectively. For the mixed alternating treatments the power level of 470 gives the least total bacterial count of 3.3x103 CFU/g compared to 3.5x103 for the power level of 385W at 2450 MHz. The decimal reduction times were 39.23 and 38.90 s for 385 and 470 W for the three times treatments respectively. Semi-logarithmic models were satisfied for the pure microwave and alternating mixed treatments with coefficient of determination of 0.98.
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