The national acido-lactic product in Caucasus is Matsoon, representing a huge source and biotechnological potential for obtaining unique, century-old selected lactic-acid bacteria and yeast. Matsoon reveals evident Fe-dependent antioxidant activity initiated mainly by rodshaped lactobacilli. Its microbiota is rich in proteaseresistant bacteriocins producing lactobacteria, which have been isolated and characterized with creation of the Culture Collection and Databases. Treatment and dietary acidolactic product ''Narine'' obtained in Armenia is a valuable preparation for correction and restoration of intestinal microbiota of patients damaged by radiation disease. A novel technology for production from raw starch the lactates and food-grade lactic acid with the use of Streptococcus bovis is presented.

A technique is described for observing bacterial colony growth. Bacillus cereus, B. subtilis, and B. cereus var. mycoides were grown on strips of dialysis membrane layered on nutrient agar. Microcolonies of the organisms on strips were fixed in Formalin vapor in situ; the strips then were removed from the agar and secured to scanning microscope specimen stubs without markedly disturbing the cellular arrangement. Scanning electron micrographs clearly depict morphology of individual cells, as well as the spatial orientation of cells within the colony. This technique is reproducible, adaptable, and simple.

No abstract

A technique is described for observing bacterial colony growth. Bacillus cereus, B. subtilis , and B. cereus var. mycoides were grown on strips of dialysis membrane layered on nutrient agar. Microcolonies of the organisms on strips were fixed in Formalin vapor in situ; the strips then were removed from the agar and secured to scanning microscope specimen stubs without markedly disturbing the cellular arrangement. Scanning electron micrographs clearly depict morphology of individual cells, as well as the spatial orientation of cells within the colony. This technique is reproducible, adaptable, and simple.