Techniques for the rapid and sensitive detection of penicillinase.
Practical problems in the detection of penicillinase are discussed. A membrane technique for this purpose is described, with various modifications, suitable for screening large numbers of organisms and yet more sensitive than most methods.A one-stage membrane technique is adequate for detecting hydrolysis of penicillin G but a two-stage technique is required to demonstrate hydrolysis of some other penicillins. A gradient adaptation can be used for quantitative purposes.Staphylococci, coliforms, Proteus, and other organisms can be tested in this way for penicillinase formation; the method is also suitable for testing lysates, filtrates, and dialysates, provided independent provision is made for enzyme inducement.
D001431:Bacteriological Techniques; D010400:Penicillin G; D010405:Penicillinase; D010406:Penicillins; D011511:Proteus; D013210:Staphylococcus
D010406:Penicillins; D010405:Penicillinase; D010400:Penicillin G
BACTERIOLOGICAL TECHNICS; PENICILLIN; PENICILLINASE; STAPHYLOCOCCUS