At higher temperatures, a plot of brown pigment versus time will curve upwards as in a first-order reaction (Hutchings, 1994). Due to the fact that a deep-fat frying process usually has a very short period with a surface temperature lower than 60 C, a first-order kinetics analysis for browning during frying is expected. Marquezand A~non (1986) studied the influence of reducing sugars and amino acids in the color development of fried potatoes ending with a first-order reaction analysis.