Continuous digest process for the manufacture of concentrated protein products from animal materials

Abstract From the Canadian patent

A method for the production of concentrated protein products from raw animal materials is disclosed. Raw animal material is reduced to a compact mass combined, with enzymes in a mixing vessel and heated to form a, pre-digestion mixture. The pre-digestion mixture is transferred to a series of individual digester units arranged in uninterrupted succession. After digestion the protein product is deboned. A portion of the deboned protein product is recycled to the mixing vessel. The non-recycled portion of the deboned protein product is pasteurized and evaporated to obtain a concentrated protein product.