Leather products can not reverse the refining of collagen, right?
Because the amount of added is very small, but heavy metal damage to the body great harm. The The So I think the quality of food and safety supervision departments should be strict supervision
So in the unspoken rules: yogurt, capsules and dress are possible (just maybe I did not say must use) with this, but a small amount of food is still not much problem
In general, protein, amino acid nutrition is there, but heavy metals and other harmful substances can not be guaranteed, of course, the price is cheaper than food-grade gelatin
Leather does have collagen, through acid or alkali hydrolysis can be hydrolyzed, with or without filtration and other treatment can be made of powder gelatin,
