The pGI in wheat or whole wheat flour noodles significantly decreased with the incorporation of hydrocolloids, while pGI values in buckwheat flour-based noodles were negatively affected by hydrocolloids (p < 0.05). Nonetheless, adding hydrocolloids in all noodles positively modified the cooking quality, regardless of thenature of the flour. In particular, the addition of hydrocolloids produced wheat flour-based noodles with improved cooking qualities and texture similar to that of the control noodle. Also, hydrocolloids lowered starch hydrolysis and reduced pGI. As a result, it seems that starch digestibility and noodle quality are affected by the nature of the flours used, the levels and type of hydrocolloids included, and the relationship between the flour and hydrocolloid. In a further study, it will be necessary to optimize the appropriate combination of hydrocolloid-flour blends based on their physical characterization and functionality.