Mikrobiol. Z. 201(1):9-13. Ukrainian.
doi: https://doi.org/10.15407/microbiolj77.01.009

Influence of Vermiculite and Silicon Dioxide on Dehydrogenase Activity of
Bacillus subtilis ІМВ В-7023 and Azotobacter vinelandii ІМВ В-7076

Gerasymenko I.O., Kurdish I.K.

Zabolotny Institute of Microbiology and Virology, NAS of Ukraine
154 Akad. Zabolotny Str., Kyiv, 03143, Ukraine

Culturing of Bacillus subtilis and Azotobacter vinelandii in nutrient media containing 5.0 g/l of vermiculite resulted in increasing of dehydrogenase activity of bacteria to 34-40 % compared with control. When adding in nutrient media 0.5 and 2.5 g/l of silicon dioxide the dehydrogenase activity of B. subtilis increased by 6-7 %. With increasing of its content in the medium to 5.0 g/l the level of dehydrogenase activity decreased. Silicon dioxide did not affect positively dehydrogenase activity of A. vinelandii.

Key words: Bacillus subtilis ІМV В-7023, Azotobacter vinelandii ІМV В-7076, dehydrogenase activity, vermiculite, silicon dioxide.

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