less acidic conditions (pH > 5), the reactive cyclic compounds (Hydroxymethylfurfural (HMF) and others) are polymerized quickly to dark-colored, insoluble material containing nitrogen. It is generally difficult to ascertain whether the mechanism is enzymatic or non-enzymatic unless the enzyme is first inactivated. However, very few studies have been done to determine the contribution of either enzymatic or non-enzymatic browning to the overall browning. Nimmol et al.[15] studied the effects of using a combination of low-pressure super-heated steam - far infrared radiation (LPSSD-FIR) and vacuum - far infrared radiation (VACUUM-FIR) to determine the drying characteristics of bananas. Although the banana slices were dried in a shorter time than with convective drying, their color was dark. They attributed the cause of browning to only non-enzymatic browning but did not consider enzymatic browning; neither did they specify the type of non-enzymatic browning.