galactasen.

1898 S. M. Babcock et al. in 15th Ann. Rep. Agric. Exper. Station Univ. Wisconsin 77 Our studies during the past year have been especially concerned with..this ferment, which is allied in some respects to trypsin... On account of its presence in milk we propose for this ferment, the name galactase.

1948 B. L. Herrington Milk & Milk Processing xxi. 285 The milk itself may furnish the enzymes lipase and galactase, although these may be inactivated by pasteurization.

1985 R. Riel in Dairy Sci. & Technol. (Fondation de technol. laitière du Québec) i. 38 Proteases (also called galactases) are enzymes which hydrolyze proteins into simple peptides, or, to the extreme, into amino acids.

1910 E. F. Armstrong Simple Carbohydrates & Glucosides v. 56 The hydrolysis of the β-galactoside is due to a lactase (β-galactase).

1929 R. P. Walton tr. E. Waldschmidt-Leitz Enzyme Actions 236 The assumption by Euler, which postulates a special ‘galactase’ which converts galactose to an active form.

1949 J. H. Northrop in A. K. Parpart Chem. & Physiol. Growth i. 34 Enzymes are sometimes formed as a specific response to the presence of the corresponding substrate or its decomposition products... The production of galactase by yeast is the best known example.

2004 Biogeochemistry 67 236 Other important carbon degrading enzymes are hydrolytic cellulases,..hemicellulases,..galactase, and α-glucosidase.