The aim of this study was application of \\\"-amylase termamyl 2-x for maltodextrin production from corn starch and evaluation of its industrial uses. The effective parameters were studied in laboratory and pilot plant scale. This process includes preparation of starch suspension, pH adjustment, addition of enzyme and heating under stirring. Before enzyme inactivation, DE and°Brix were controlled continuously. After separation of soluble sections by centrifuge, maltodextrin liquid was dried by spray drier. In this study, DE values at dry matter, were calculated under three enzyme concentrations (0.2, 0.25 and 0.3 ml of \\\"-amylase termamyl 2-x per Kg of starch) and in three different hydrolysis temperatures (60, 65 and 70°C) at constant pH (6). A completely randomized design with factorial arrangement and 5 replications was conducted. Multiple linear regression was used for relationship between Dextrose Equivalent (DE) and different parameters (enzyme concentration, temperature and hydrolysis time). The results from different enzyme dosage at the same temperature and time of hydrolysis do differ significantly (p = 0.05). Meanwhile the best enzyme concentration and hydrolysis temperature for maltodextrin (DE between 18 and 19) production after 300 minutes were 0.25 ml of enzyme per kg of starch and 70°C, respectively. In these conditions, the least residual starch concentration and \\\"-amylase activity were observed.

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