Enzymatic profile of Pseudomonas maltophilia

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Abstract
An enzymatic profile of 20 strains of P. maltophilia was undertaken with conventional plate tests, API ZYM and 4-methylumbelliferyl-conjugated substrates. All strains produced DNase, RNase, arbutinase, esterases and lipases, mucinase, acid and alkaline phosphatase, alkaline pyrophosphate diesterase, phosphoamidase, .beta.-glucosidase, leucine arylamidase and acetatase and were hemolytic for horse, sheep and rabbit blood. The majority of strains produced chitinase, hyaluronidase, albuminase, valine arylamidase, trypsin, .alpha.- and .beta.-glucosidases and N-acetyl-.beta.-glucosaminidase. API ZYM and 4-methylumbelliferyl-conjugated substrate assays are rapid, simple, specific and sensitive and may be useful as diagnostic aids in the identification of P. maltophilia and other pseudomonads.