Accord to *******an increase in inlet drying temperature resulted In a greater loss of lycopene content in tomato powders.similarly,*****observed that a decrease in the lycopene and B-carotene content of spary-dried water lemon powder occurred as a result of increasing the inlet air temperature. The main reason for these findings is due to thermal degradation and oxidation. In addition to the inlet temperature, the loss of carotenoids in the gac fruit powder samples was also dependent on several factors, such as out let temperatures, droplet moisture content, oxygen and exposure to light.These factors are governed by processing condition such as feed rate,initial feed solid concentration, drying and compressed air flow rate. Moreover, the higher moisture content was obtained by powder spray drying at lower inlet air temperatures. Increasing moisture content caused a higher loss of lycopene, however, when moisture content increased, a greater degree of aggregation occurred because of the natural stickiness of the product. This leads to there being lower oxygen exposure resulting in lower lycopene loss **********. Moreover, carotenoids are easily vulnerable to thermal treatment and oxidative processes due to their structure which contains a conjugated double bond system over the entire length of the polyene chain*******.