Preparation of Source Material
The principal raw materials used in halal gelatin production currently are
cattle bones and cattle hides. Noncollagen substances such as minerals
(in the case of bone) and fats and proteins (in the case of hide) are
removed by various treatments to prepare collagen for extraction.
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Bones — fresh bones, also called green bones, from the halalslaughtered
cattle are cleaned, degreased, dried, sorted, and
crushed to a particle size of ca. 1 to 2 cm. The pieces of bone are
then treated with dilute hydrochloric acid to remove mineral salts.
The resulting sponge-like material is called ossein.