Effect of Laser Pasteurization on Production of Yoghurt

Abstract

This research was undertaken to compare yogurt produced from unpasteurized milk, laser pasteurized milk and heat pasteurized milk. Milk samples were obtained from SUST farms-Shambat-North Khartoum- Sudan. ND: YAG laser used to pasteurize the first sample, the second sample pasteurized by heat and the third one was left as obtained to be control sample. Yogurt is produced by bacterial fermentation of milk. The results showed that the use of laser in pasteurization is not differ from heat pasteurization, while the production of yogurt from laser pasteurized milk is slightly better than that of heat pasteurized milk.