[Influence of cryopreservation and lyophilization on exopolysaccharide synthesis and viability of Xanthomonas campestris pv. campestris IMV B-7001].

It is shown, that the producer of exopolysaccharides Xantomonas campestris pv. campestris IMV B-7001 is more sensitive to freeze-drying, than to freezing-thawing and keeps stable morphological properties. Predicted preservation of viability is within the limits of 2-8 years at -70 degrees C and exceeds 30 years at -135 degrees C and freeze-drying.

[The antagonistic properties of bacteria isolated from the digestive tract of female mink housed in the area of the Chernobyl Atomic Electric Power Station].

Differences in species composition, number and level of antagonistic activity of bacteria isolated from the digestive tract of Chernobyl female minks of various age and with different immunological state have been established. Prevalence of anaerobes (bifidobacteria) and microaerophils (lactic acid bacteria) with the increase of microorganisms concentration along the channel: stomach, small and large intestine (10(7)-10(10)/g) was found in all the departments of digestive tract of minks. Among the identified lactic-acid bacteria Lactobacillus helveticus (10(7)-10(8)/g) prevailed in the stomach of the studied female minks, L.

[The antagonistic properties of microaerophilic bacteria isolated from the human and mink digestive tracts].

Study of antagonistic properties of microaerophilic bacteria isolated from human and mink gastroenteric tract have helped to establish differences in species composition, quantity and level of antagonistic activity of the studied microorganisms in respect to pathogenic microflora. It is shown that lactic acid bacteria identified as Lactobacillus fermentum and L. reuteri prevail among the strains isolated from the stomach and thin intestine of minks kept in the 30-km zone of Chernobyl NPP.

[A microflora study of the gastrointestinal tract of mink housed within and outside of the area of the Chernobyl Atomic Electric Power Station].

Quantitative differences in the content of lactic acid bacteria isolated from the content of the stomach, small and large intestine have been established when studying microflora of the gastrointestinal tract of minks kept in the 30-kilometer zone of the Chernobyl NPP (experimental animals) and at the Cherkassy fur farm (control animals). Obligate heterofermentative species of lactic acid bacteria related to Lactobacillus fermentum and L. reuteri prevailed in the stomach of experimental minks.

[The intestinal microflora of persons subjected to a radiation lesion].

The content of large intestine has been studied in persons exposed to radiation injury in consequence of the accident at the Chernobyl Atomic Power Plant. It is stated that bifidobacteria (10(7)-10(10) cells in 1 g of feces) prevailed (as in healthy people), Bifidobacterium indicum being a dominating species. Amount of lactic-acid bacteria in 1 g of defecations of examined patients was within the range of 10(6)-10(9) cells and in certain persons it reached 10(10) cells (primarily fecal Enterococci).