Amylase treatment is an essential and efficient method to reduce the viscosity of oatmeal, increasing its liquidity for spraydrying and for use in drinks (Shi et al., 2012). The normal maize starches modified using partial maltogenic alpha-amylolysis produced new, fine structures with slow digestion characteristics(Miao et al., 2014). Raheem (1995) found that amylase addition increased the flow ability of cooked, fermented oat bran porridge.
However, a long heating process is normally used in these enzymatic treatments, potentially causing decreases in the final content of thermally sensitive compounds in oat flour, such as phenolic compounds.