UV-A irradiation of WM minor effect on FAAs, GLU, and LYS, with only 10% and 2% degradation respectively at the 838 mJ/cm 2 . There is significant amount of literature on thermal degradation of amino acids. For instance, sterilization of cow's milk did not have a significant effect on TRP, it reduced LYS by 97% (Payne-Botha and Bigwood, 1959). also studied how heat treatment affected all FAA levels and discovered that most FAA concentrations were significantly lowered. Heat treatment at 121 °C induced significant browning of milk and decreased the lysine content by 21%. This essential amino acid LYS was not significantly affected by UV-A irradiation at high exposure doses. At 279 mJ/cm 2 , the FAA concentration reduced (2.16±0.65 µM) considerably (p<0.05), while continued treatment had less influence on total FAAs concentration, indicating proteolysis during treatment at higher dosages . When an insufficient mix of FAAs is supplied in a diet: the rate of protein synthesis, and the FAA metabolic response may be harmed in an individual .