Noodles substituted with 30% BF showed lower carbohydrate digestibility rate than did the control and had a lower GI. However,
compared to the noodle with substituted 30% BF and added oat b-glucan, it showed greater effect in retarding the rate of carbohydrate digestibility and reducing the GI of noodles. Addition of 10% oat b-glucan resulted in a pronounced increment of soluble fibre content and significantly reduced the GI of noodles. Oat b-glucan also contributed certain amounts of protein, crude fibre, crude fat, ash, amylose and total starch to noodles.