2. Materials and methods
2.1 materials
All-purpose wheat flour and granulated salt were obtained from CJ Co. (Seoul, Korea). Whole wheat flour was purchased from the chung-bori agricultural association (Go-chung, Korea). Alginic acid sodium salt from brown algae (A-2158, low viscosity), guar gum (9000-30-0), and xanthan gum (11138-66-2), Which are widely known for improving noodle quality, were obtained from Sigma-Aldrich (St. Louis, MO, USA). Pancreatin from porcine pancreas (P7545, activity 8XUSP/g) and amyloglucosidase (A9913) were obtained from Sigma-Aldrich (St.Louis, MO, USA). The total starch assay kit (K-TSTA) and glucose oxides-peroxidase