This description shows the great change it undertakes and the new name it takes. On considering part of the Qur'anic verse of chapter 161 quoted earlier, it is clear this process is like or similar to the process of obtaining milk out of the dirt inside the belly of the animal which Allah described as wholesome, palatable and pure. In fact, most of the new products which are containing such chemical elements are obtained by chemical processes. These processes are not a mere mixing up of what is Haram with what is Halal. It is a real change.
Protein is different from gelatine.
As such it is pure and can be used in products which are allowed. Vinegar, milk and salt are all examples of products extracted from impure substances. In fact the Hanafi view in this connection is much more advanced and liberal. To hasten to say Haram without considering the process of change, to look into the original without considering the new product shows the inability to understand the world of science and chemistry advanced as it is nowadays and ignoring the needs of the Muslim communities in their new environment. May Allah guide us on the right way.