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Abstract
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Article Information:
Comparison of Chemical and Microbiological Parameters of Charcoal Versus Gas and Solar Energy Treated Milk
M.O.M. Abdalla and M.S. Daffalla
Corresponding Author: Mohamed Osman Mohamed Abdalla
Submitted: 2010 August, 19
Accepted: 2010 September, 13
Published: 2010 September, 25 |
Abstract:
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The effect of heat treatment using different sources of heat on the chemical composition and
microbial quality of milk was studied. Raw cow, goat and sheep milk were heated with charcoal, gas and solar
energy at 99ºC for 12 min, cooled to 20ºC and chemical (fat, protein, total solids, ash (titratable acidity),
vitamin C) composition as well as microbiological examination (total viable bacteria count) were carried out.
Results showed that fat, total solids and ash contents w ere high in cow milk heated with solar energy, while
protein content was high when milk was heated with gas, and the titratable acidity was high in milk heated with
charcoal and gas. The fat, total solids and ash contents of goat milk w ere high when milk was heated with gas,
while the protein content and titratable acidity were high when milk was heated with solar energy. The fat
contents of sheep milk was high when milk was heated with gas, while the protein and total solids content were
high in milk heated with solar energy, and ash content and titratable acidity were high in milk heated with
charcoal. Vitamin C content was high for all milks when heated with solar energy, while the total viable
bacteria count was high in milks of all species when heated with charcoal. Solar energy was shown to be
suitable for heating milk from chemical view point, while heat treatment of milk with gas was found to be better
microbiologically.
Key words: Chemical, charcoal, gas, milk, solar energy, ,
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Cite this Reference:
M.O.M. Abdalla and M.S. Daffalla, . Comparison of Chemical and Microbiological Parameters of Charcoal Versus Gas and Solar Energy Treated Milk. Advance Journal of Food Science and Technology, (5): Page No: 286-290.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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