Acid hydrolysis of CM was an effective method to decrease hydration properties of CM. The modified CM had lower SC and WRC and higher BD compared to the untreated one. Acid hydrolysis modified CM metric structure which increased compactness of the metric structure and decreased the sites of water to bind the modified CM. The use of modified CM in bread and cookies improved the product qualities significantly. With development of the food formulations, the qualities of foods incorporated with the modified CM could be further improved. RSM showed that HCl concentration, hydrolysis temperature and time influenced hydrolysis yield, SC, WRC and BD of the modified CM. Depending on the properties of fiber desired to be incorporated into food formulations, we can use the models generated from this method to predict properties of the modified CM. Acid hydrolysis is a simple method for lowering hydration properties of food fiber and may be used in other kinds of fibers possessed high water holding capacity similarly to CM to improve their properties and utilization as source of food fibers or low-calories bulk ingredients.