NOTE - DIFFUSE-REFLECTANCE PROFILES OF GOATS MILK DURING COAGULATION BY VARIOUS ENZYMES

The behaviour of different coagulant enzymes during the coagulation of goat's milk was studied by diffuse reflectance. During the first 5 mi n a decrease was observed in the diffuse reflectance profile which cor related with the recorded decrease in viscosity measurements; this dec rease was followed by a continuous increase in the reflectance value. The milk clotting time for all the enzymes studied can be calculated f rom a plot of the first derivative of the diffuse reflectance value vs time by assuming the maximum value of the first derivative. There wer e no significant differences (p less than or equal to 0.05) between th e milk clotting time determined by diffuse reflectance and the value o btained using the Berridge method.