CLASSIFICATION OF ENZYMES 181 



B. Acid amides (urea): amidases general term, to 



form : 

 1. Ammonium carbonate: urease specific term. 



III. Oxidizing enzymes: oxidases general term, of: 



A. Ethyl alcohol: alcoholase (alcoholoxidase, vinegar- 



oxidase) specific term. 



B. Organic acids: 



1. Lactic acid: lactacidase specific term. 



2. Acetic acid: acetaddase specific term. 



C. Tyrosin: tyrosinase specific term. 



IV. Reducing enzymes: reductases general term, of: 



A. Hydrogen peroxide: 



1. Catalase specific term, free oxygen liberated. 



2. Peroxidase specific term, transference of oxygen. 



B. Organic dyes to leuco-compounds. 



1. Methylen blue, litmus, azolitmin, indigo, etc.: 



methylen-blue reductase, etc. specific term. 



2. Methylen blue in the presence of formaldehyde 



(Schardinger's reaction) : perhydridase spe- 

 cific term. 



C. Sulphur to [28 : sulphur reductase specific. term. 



D. Nitrates to nitrites, nitrates to NHs, etc. : nitrate-, 



nitrite-reductase, etc. 



V. Coagulating enzymes. 



A . Protein-coagulating. 



1. Casein: 



a. Of cow's milk: caseinase (rennin, rennet, 



chymosin) specific term. 

 6. Of human milk: parachymosin specific term. 



2. Fibrin of blood: thrombase (thrombin) specific 



term. 



B. Carbohydrate-coagulating. 



1. Pectin : pectinase specific term. 



