Detection of cow's milk admixture to buffalo's milk

✍ Scribed by Farag, R. S. ;Hewedi, M. M. ;Abo-Raya, S. H. ;Khalifa, H. H.

• Publisher: John Wiley and Sons
• Year: 1986
• Weight: 364 KB
• Volume: 88
• Category: Article
• ISSN: 0931-5985
• DOI: 10.1002/lipi.19860880310

✦ Synopsis

Gas chromatography was used for the qualitative and quantitative determination of fatty acids of authentic buffalo's milk, cow's milk and buffalo's milk adulterated with cow's milk. The milk fat was separated by fractional crystallization at -200C into two distinct fractions, i.e., semi-solid and motherliquocThe concentrationof the fatty acids in the motherliquorchanged significantly for 14 : 0.16 : 0 and 18 : 1 as adulteration levels were increased. The fatty acids of the semi-solid fractions changes in the proportion of 16 : 0, 18 : 0 and 18 : 1 when cow's milk is mixed with buffalo's milk. By applying a simple regression equation for these acids, adulteration of buffalo's milk with 5% cow's milk could be distinguished.

M a t e r i a l s a n d M e t h o d s Milk samples

Milk samples were collected at winter from herd belonging to the Experimental Station, Faculty of Agnculture, Cairo University, Giza. The herd comprising of Egyptian buffaloes and Balady cows (20 each) of 4-6 years old and rmlked twice daily. The animals were mainly fed on Egyptian clover and concentrate mixtures during the winter season.