The invention provides a process for purifying lactoferrin from milk, the process comprising subjecting the milk to filtration to separate it into a retentate fraction comprising lactoferrin and a permeate fraction comprising growth factors and/or RNAses, wherein prior to and/or during filtration the milk is subjected to salt treatment such that growth factors and/or RNAses flow into the permeate. The invention also provides lactoferrin obtained from the process of the invention and uses thereof.
