[Detection of bacteria of the genus Erwinia in sanitary- microbiological control of dry milk products for infants]

Abstract

The possibility of identification of Erwinia bacteria was established during the microbiological analysis of child nutrition products, containing vegetable components, for the presence of coliform bacteria. Biochemical and cultural-physiological properties differentiating Erwinia herbicola from Enterobacter agglomerans were studied, and the most significant differential-diagnostic tests for bacteria identification were determined. To identify Erwinia bacteria that do not belong to coliform bacteria the following additional tests are recommended for practical use at the sanitary-bacteriological laboratories: the presence of yellow or brown pigment during the growth in Endo medium; inoculation into nutrient agar medium with saccharose; inoculation into gelatin -containing medium.