Physicochemical Characteristics of Various Milk Samples

Hadohum M. Musallam, Hend M. Almozogai, Somia S. Amkabis, Marowa A. Aoag, Tark M. Hassan, Esam A. Elhefian, Fathi M. Asseid


Background: Milk is a complex colloidal dispersion composed of fats, proteins, lactose, minerals and other minor compounds. The quality of milk can be monitored by evaluating its physicochemical properties and characteristics.                                                               Materials and methods: This work was carried out to evaluate some physicochemical properties, including acidity, density and viscosity of milk samples collected from goat, cow, camel and human (human breast milk based on a baby's sex).                                                  

Results: Results showed that the highest value of density was recorded for goat milk and cow milk (1.02 and 1.03 g/cm3 respectively) while the highest value of viscosity was recorded for human breast milk for a boy (1.770 cP). It was also found that the acidity of the milk samples increased with increasing time as expected. Studying the composition of the milk samples in terms of carbohydrates (lactose) and proteins showed that the highest percentage of lactose was found in the human breast milk for a boy (6.51%) and the highest percentage of protein was exhibited by goat milk (4.93%). Interestingly, it was observed that the physicochemical properties of human milk depend on the infant's gender.                

Conclusion: Variations in physicochemical properties are observed in animal milk samples analyzed in this work, which could be helpful for monitoring the quality of the milk for consumption. It is observed also, that variations in human milk depend on the infant' sex, which encourages more studies to be conducted on this topic.                                                                       

Keywords: milk, physicochemical properties, animals, human


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DOI Prefix: 10.20286