PubMed Health⌕ Search

Biomedical subjects

A A Roĭ

Publications and source records attributed to A A Roĭ.

11 recordsLinked to original sources
PubMedDate not supplied

[Characteristics of hemagglutination reaction in methanotrophic bacteria].

The reaction of hemagglutination with trypsin-treated rabbit erythrocytes was used to reveal lectins on the cell surface of methanotrophic bacteria and in their culture liquids. By this method, no lectins were detected on the cell surface of Methylococcus capsulatus IMV B-3001 and Methylomonas rubra IMV B-3075 or in the culture liquid of any of the species studied. With intact cells of Methylocystis parvus IMV B-3491, the positive hemagglutination reaction observed was nonspecific and most probably occurred due to the high cell surface hydrophobicity characteristic of this species.

Animals↗
PubMedDate not supplied

[New strains of soil bacilli which mineralize organic phosphorus compounds].

Microorganisms, which mineralize organophosphates (216 isolates) have been isolated for the chernozem soils of different regions of Ukraine. Sixteen most active strains referred to Bacillus genus have been identified and studied. These microorganisms grow (with different intensity) on the mineral medium with glucose and glycerophosphate or phytin, accumulating phosphate-ions in the medium. The most active strains mineralized glycerophosphate, accumulating about 280 micrograms/ml of PO4(3-) and phytin accumulating up to 130 micrograms/ml of PO4(3-) during 3 days. New strains of bacilli have been chosen for creation of combined bacterial preparations of the complex effect.

Bacillus↗
PubMedDate not supplied

[Physiological activity of mixed cultures of Methylcoccus capsulatus UKM B-3030 with Bacillus megaterium UKM B-5723T and Bacillus subtilis VKPM B-1489 on solid surface colonization].

Physiological activity of monoculture of Methylococcus capsulatus UCM B-3030 and its mixed cultures with two bacilli species distinguished by proteolytical properties--Bacillus megaterium UCM B-5723T and Bacillus subtilis BK[symbol: see text]M B-4189 in terms of long-duration cultivation is investigated. It is shown, that the most active methane consumption by methanotrophic bacteria and their mixed cultures with bacilli under solid surface colonization occurred on the second-eighth day of cultivation. The obtained results permit one to evaluate intensity of CH4 oxidation process by typical microflora of some econiches (depleted coal mines, in particular).

Bacillus megaterium↗
PubMedDate not supplied

[Characteristics of spore-forming bacteria of the genus Bacillus that break down caprolactam].

Five strains of sporeforming bacteria were isolated from sewage of capron industry and their morphological, cultural, as well as physiological and biochemical properties were investigated. Four strains were identified as Bacillus subtilis and one as Bacillus pumilus. The cultures were able to grow in mineral medium with caprolactam as a source of carbon and nitrogen. The influence of growth conditions on the rate of caprolactam decomposition in synthetic medium was studied.

Azepines↗
PubMedDate not supplied

[Microbial contamination in a water-treatment system].

Microorganisms destructors of organic compounds contained in the Kremenchug reservoir and water treatment system of heat power station have been distinguished and identified. This system does not completely remove microflora at all stages of technological process that results in infestation of ion-exchange resins of the 1st stage filters for water desalting with microorganisms. The reasons have been established of the 1st stage desalting filters infestation by the reservoir water microflora. It is necessary to form a complex approach to solution of the problem of preventing the accident situations: microbe infestation of ion-exchange resins of water-desalting filters in the system of chemical water treatment of heat power stations.

Bacteria↗