The biochemical reactions tested with API test are: production of indole; utilization of citrate; production of nitrite; fermentations of glucose, mannitol, inositol, sorbitol, rhamnose, sucrose, melibiose,
amygdaline, and arabinose; production of [H.sub.2]S; activities of beta-galactosidase, tryptophane desaminase, gelatinase, arginine dihydrolase, lysine decarboxylase, and ornithine decorboxylase; formation of acetoin from pyruvate and oxidase (MacDonell et al.