process for enzymatic digestion of proteinreichem material

摘要

Lipid-contg. protein-rich material (A), e.g. cereal proteins, esp. zein, is treated with lipases, pref. of microbial or origin, in aq. suspension before degradation with proteolytic enzymes. Pref. lipases are made to react on aq. suspension of (A) at 20-65 (35-45) degrees C at pH 3-9 (6-8.5). After treatment of (A), lipase-contg. soln. is sepd. mechanically and opt. re-used. Lipid-free protein-rich material is degraded by proteolytic enzymes, esp. alkaline proteases. Treatment of (A) with lipases and proteolytic enzymes may take place simultaneously. Treatment with other enzymes, e.g. amylases and/or cellulases, may take place before, during or after lipase treatment.