Abstract: A process for purification of proteolytic enzymes which comprises a biospecific sorption on a sorbent comprising a product of interaction of a solid carrier which is an aminoderivative of a siliceous material, a ligand and a condensation agent; elution of the sorbed enzymes by salt buffers and/or organic solvents.

Abstract: Production of optically pure N-acyl-D-phenylalanine ester by reacting a racemic mixture of N-acyl-D,L-phenylalanine ester with a proteolytic enzyme and separating the resulting N-acyl-D-phenylalanine ester from the solution with subsequent removal of the N-acyl and ester groups to provide D-phenylalanine.

Abstract: This invention involves a process for the preparation of spray dried enzymes.

Abstract: A first cylindrical drum member has an inlet portion for receiving a supply of agglomerative materials, such as preheated coal and char. The first drum member has a longitudinal axis and an outlet portion through which the agglomerated product is discharged into the inlet end portion of a second cylindrical drum member. A second drum member is supported for rotation independently of the first drum member in tandem relation therewith and has a longitudinal axis copolanarly aligned with and intersecting the longitudinal axis of the first drum member. A rotary scraper is rotatably positioned within the first drum member in spaced relation to the inner cylindrical wall thereof and has a longitudinal axis spaced from the longitudinal axis of the first drum member. The scraper has a tubular body portion that is rotatably supported adjacent the inlet and outlet portions of the first drum member.