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  • Title: [Value of some enzyme tests used in practice for identification of enterobacteria].
    Author: Neguţ M, Călin C, Niţulescu A, Potcoavă R.
    Journal: Rev Ig Bacteriol Virusol Parazitol Epidemiol Pneumoftiziol Bacteriol Virusol Parazitol Epidemiol; 1977; 22(2):99-107. PubMed ID: 143713.
    Abstract:
    A restricted biochemical scheme for the identification of enterobacteria, consisting of 12 enzymatic tests, of which 7 performed on the multitest TSI and MIU media (H2S, the production of acid and gas from glucose, fermentation of lactose/saccharose, mobility, urease and indol production) and 5 additional tests performed separately : lysindecarboxylase, phenylalanindeaminase, beta galactosidase, increase on citrate media and splitting of sodium malonate is proposed. Of 7782 coprocultures, 275 were selected on TSI and MIU media as belonging to one of the groups of known pathogenic enterobacteria ; 94.87% of these cultures were correctly identified by using the 5 additional tests alone. Of the 14 cultures that could not be listed taxonomically, 10 gave atypical reactions with at least one of these tests. The current use of this restricted scheme and the use of the more extensive sets only in doubtful cases presents a real advantage by reducing the volume of work and materials under satisfactorily accurate conditions for identification.
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