It is abnormal that lactoferrin 100g contains 500mg. Lactoferrin is a food nutrition fortifier, not a food additive, so the application scope and addition amount need to refer to the use standard of food nutrition fortifier. The highest content stipulated by the state is 100mg/ 100g, so it is not normal for lactoferrin 100g to contain 500mg.

Lactoferrin is an iron-binding glycoprotein with a molecular weight of 80kDa and belongs to the transferrin family.