Enzymatic characterization of Aeromonas hydrophila complex by the API ZYM system

Abstract

Enzymatic characterization of 48 Aeromonas hydrophila complex isolates from various sources was determined with the API ZYM system (Analytab Products, Plainview, N.Y.). all isolates lacked valine and cystine aminopeptidases, chymotrypsin, α-mannosidase, α-fucosidase, α-galactosidase, and β-glucuronidase but possessed caprylate esterase-lipase, leucine aminopeptidase, acid phosphatase, phosphoamidase, and N-acetyl-β-glucosaminidase. Variability was found in the presence of alkaline phosphatase, butyrate esterase, myristate lipase, trypsin, β-galactosidase, α-glucosidase, and β-glucosidase. No significant differences were evident among the enzymatic profiles of isolates from various sources.