Seasonal impact on oxidative stability and antioxidant potential of clarified milk fat of cow, buffalo and goat

To assess the seasonal impact on oxidative stability and antioxidant potential, clarified milk fat (CMF) of Gir cow, Banni buffalo and Gohilwadi goat milk during different seasons was evaluated. The induction period (h) at 130 and 140°C was significantly (P<0.05) highest (9.34 and 4.64) in Gir cow CMF during post-monsoon season and lowest in Gohilwadi goat CMF (2.75 and 1.34) during monsoon season, respectively. The radical scavenging activity (2, 2-diphenyl-1-picrylhydrazyl), 2, 2-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid and total phenolic content (μG GAE/ml) was higher during winter season in Gir cow CMF (10.54±0.23, 5.81±0.11 and 13.05±0.23, respectively). Gohilwadi goat milk fat exhibited a higher (18.3%) content of TAGs (C26 to C36) compared to cow milk fat (13.6%). It was inferred that Gir cow CMF contains highest antioxidant potential in winter and Bunni buffalo and Gohilwadi goats in summer.