From Big Medical Encyclopedia

SELENITOVY ENVIRONMENTS — the fluid mediums of enrichment intended for accumulation in the studied material of pathogenic bacteriums this. Enterobacteriaceae, preferential salmonellas.

Villages of the village are offered in 1936 to Lifsonom (E. Leifson). The main the page operating with the beginning S. is sodium acid selenite, in strictly certain concentration the stimulating growth of pathogenic bacteriums and at the same time overwhelming growth of the accompanying flora. Also the phosphates providing buffer properties are S.'s part of page lactose (see), influencing reaction of the environment, and peptone (see. Peptones ), being nutritious substrate. Distinguish the selenitovy F-environment (from English feces of an excrement) used for allocation salmonellas (see) and shigellas (see), preferential Zonne's shigellas, from excrements, urine, water, drain waters, foodstuff, and also the selenitovy M-environment (from English milk milk) for allocation of salmonellas from milk.

Are a part of the selenitovy F-environment: sodium acid selenite anhydrous without impurity of tellurium (4 g), peptone (5 g), disubstituted sodium phosphate anhydrous (7 g), monosubstituted sodium phosphate anhydrous (3 g), lactose (4 g), the water distilled (1 l). F-Wednesday has pH 7,0 — 7,2. The Selenitovy M-environment differs from the selenitovy F-environment in the lowered content of sodium acid selenite anhydrous (2 g) and the increased content of peptone (10 g).

See also Mediums .

Bibliography: Zharikova M. S. Use of enrichment medium with selenit at bacteriological diagnosis of a salmonellosis and dysentery, Zhurn. mikr., epid. and immun., No. 8, page 108, 1963; To and l e with with about V. A., etc. About improvement of laboratory diagnosis of salmonelloses, in the same place, No. 1, page 65, 1967; L e i f son E. New selenite enrichment media for isolation of typhoid and paratyphoid (Salmonella) bacilli, Amer. J. Hyg., v. 24, p. 423, 1936; Shrift A. Boulette R. P. Form of selenium in selenite enrichment media for isolation of salmonellae, Appl. Microbiol., v. 27,

p. 814, 1974.

V. A. Kilesso.