Abstract This study aimed to investigate in situ exopolysaccharides (EPSs) production by Bacillus coagulans IBRC‐M 10807 under different fermentation conditions improve the technical‐functional properties of whole wheat flour sourdough and obtain high‐quality products. For this purpose, effectiveness four efficient factors including B. (8 Log CFU/g), FOS (0%, 2.5%, 5% based on weight), temperat...