Azotobacter

The biosynthesis of cellular polymers of Azotobacter vinelandii N-15 strain using molasses as a carbon source has been optimized. The highest yield of polymer (25.8 % of cell mass) was obtained on a nutrient medium with a molasses concentration of 50 g/l. Using TL-chromatography and IR-spectroscopy the obtained product was identified as polyhydroxybutyrate (PHB), and its properties were investigated. The wetting contact angle was used to characterize the biopolymer film surface properties.

Organic agriculture (OA) is actively developing in Ukraine. The idea of OA is to refuse to use GMO, antibiotics, pesticides and mineral fertilizers, but instead – to use biopreparations for stimulating plant growth, yield increase, preventing and treating plants from diseases, which are caused by mushrooms and bacteria.