Abstract
A simple procedure is described for the rapid assay of beta-lactamases suitable for use in the quantitation of beta-lactamase inhibition in crude culture filtrates of soil microbes. The proposed method is based on measuring the blue reaction product (lambda max 750 nm) formed during reduction of phosphomolybdic acid with reducing products generated from beta-lactam hydrolysis and is not influenced significantly by the metabolites of microbial culture filtrates which often interfere with conventional beta-lactamase assay techniques.
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