Proteolytic activity, antioxidant, and α-Amylase inhibitory activity of yogurt enriched with coriander and cumin seeds

Two types of yogurt (Y) were prepared in the presence of coriander (CO) or cumin seeds (CS) at different concentrations (5, 10, 15, & 20 g/100 mL). The effect of these yogurt samples on post-acidification, proteolysis, α-amylase inhibition activity, total phenolic content, and antioxidant activity (2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, ferric reducing antioxidant potential (FRAP), and ferrous ion chelating (FIC) ability) was studied during 0,7, and 14 days of refrigerated storage at 4 °C. In addition, sensory evaluation of the yogurt was run during the first day of storage. Both COY and CSY at all concentrations showed significant effects on post-acidification, peptide content, and α-amylase inhibition activity as compared to plain yogurt (control). TPC in COY at all concentrations (42.4–165.4 μg GAE/mL) was higher than in CSY (39.0–75.7 μg GAE/mL) during the entire storage period. The radical scavenging activity increased (p