Mohammed Elimam Ahamed Mohammed1 , Ali Alsakti2 , Ahmed Showeal2 , Aed Alasidi2 , Akram Ibrahim3 , Ali M Alshehri3 , Hamed A Ghrmah4,5,6 and Eid I. Brima1,7 1 Department of Chemistry, 2 Fourth year- Department of Chemistry, 3 Department of Physics, 4 Research Centre for Advanced Materials Science (RCAMS), 5 Unit of Bee Research and Honey Production, 6 Department of Biology, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia 7 School of Allied Health Science, Faculty of Health and Life Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK
ABSTRACT
This article investigated the effect of altitude on milk of camel, goat and sheep with regard to their laser induced fluorescence spectra, pH, conductivity, moisture, Total Dissolved Solids (TDS), specific gravity and ash percentage. The altitude significantly affected the specific gravity and the ash percentage of all the studied milk’s samples while it with the altitude significantly affected the pH and conductivity of the camel and goat milk samples. The high altitude sheep and goat milk samples were characterised by the highest fluorescence intensity compared to their low altitude milk while the low altitude camel milk had the highest fluorescence intensity compared to the high altitude camel milk. The laser induced fluorescence (LIF) technique was very useful in differentiating between the altitude and animal source of the studied milk samples.
Key words: Altitude effect, ash, camel, conductivity, laser induced fluorescence, milk
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