Undeodorized oil preparation — Preparation of the oil before deodorization has
a significant effect upon the finished deodorized product; therefore, the first process
control requirement is to assure that the processing steps prior to deodorization
have been performed properly as specified. For example, deodorization of highperoxide
oils will thermally decompose the peroxides, but the rate of peroxide
formation in the oil during subsequent storage will probably increase and the
flavor stability will be compromised. Proper handling of the oil would be to
rebleach it prior to deodorization. Steam distillation does not remove secondary
oxidation products, soap, or phosphatides, which are adsorbed in bleaching