Research Progress of Yak Milk and Fermented Yak Milk and Their Nutritional Value

Yak milk is produced by yak,a special species living in high attitude,and can be fermented by lactic acid bacteria into yoghurt.Yak milk has a high nutritional value and is rich in amino acids,Ca,Fe,Zn,vitamins,and so on.Yak milk is more abundant in functional fatty acids and proteins compared to common bovine milk and has aroused growing attention.This paper provides a review of various nutrients in yak milk and yoghurt and the probiotic effect of lactic acid bacteria.However,the nutritional value of yak milk products has not been developed and utilized in depth yet.Therefore,further research and development is needed.