Effect of nitrogen flushing on the oxidative stability of whole goat milk powder during storage

The oxidative status of nitrogen flushing whole goat milk powder was investigated with accelerated oxidation test.The oxidative status of whole goat milk powder was evaluated by determining the acid value, peroxide value, TBA as well as the color during storage.The result showed that the acid value, TBA and the color of nitrogen flushing whole goat milk powder varied slightly and significantly lower than air-stored after 6 weeks, 3weeks, 7weeks respectively (p<0.05) .The peroxide of nitrogen flushing reached the peak value 13.54mmol/kg fat in 7 weeks, the rate of peroxide was significantly lower than air-stored (p<0.01) .Finally the research illustrated that the rate of acid value, peroxide value, TBA and peroxide could be delayed by nitrogen flushing, the stability of whole goat milk powder could be improved by nitrogen flushing.