Here's the short of it: You can use gelatin to filter cruddy used deep-frying oil until it is crystal clear. The technique is easier than any other method I know, requiring no wire strainers or coffee filters or extensive clean-up.
Both methods just use protein to trap large particles. The difference is that with gelatin, the process is reversible with heat. Magnesium silicate is just really pure talcum powder and it’s widely used in food service to clean oil.
This method makes the oil clearer but it doesn’t remove polar compounds, which are really unhealthy: https://lipidworld.biomedcentral.com/articles/10.1186/s12944-019-0980-0.
Polar compounds can be removed with magnesium silicate.
When you say “this” do you mean the egg whites or the gelatin method? Thanks.
Both methods just use protein to trap large particles. The difference is that with gelatin, the process is reversible with heat. Magnesium silicate is just really pure talcum powder and it’s widely used in food service to clean oil.