Production process, used in particular for obtaining lecithin from dehydrated egg

摘要

A process for obtaining products from animal raw materials containing protein and fat, and in particular for obtaining lecithin from dehydrated egg, characterized in that: A feedstock comprising lipid, phospholipid (lecithin) and protein constituents is subjected to a supercritical extraction process using a solvent for extracting lipids and flavours to yield a decreased feedstock, the lipids and flavours being extracted from the supercritical solvent by pressure reduction; The degreased feedstock with its proteins and phospholipids is subjected to a further extraction stage using a supercritical solvent and an organic solvent, which is liquid under normal conditions, as the entrainer (cosolvent) to separate the phospholipids from the proteins; The extract comprising the phospholipids and the cosolvent is concentrated and removed from the system with the help of a solvent, the phospholipids produced being obtained as solid matter and being dried by the supercritical medium; and Subsequent to the supercritical extraction process, the lipids and flavours are yielded from the solvents using pressure reduction.