Eugene L. Barsky

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Quinones caused quenching of Chl a fluorescence in native and model systems. Menadione quenched twofold the fluorescence of Chl a and BChl a in pea chloroplasts, chromatophores of purple bacteria, and liposomes at concentrations of 50-80 microM. To obtain twofold quenching in Triton X-100 micelles and in ethanol, the addition of 1.3 mM and 11 mM menadione(More)
Various aspects and the significance of the dialysis cultivation method for physiology, ecology, and biotechnology are considered. In this method, the cell culture is separated by a semipermeable membrane with a medium volume that is greater by a factor of 5–10. Dialysis cultivation is a promising method for isolating symbiotic components, selecting bionts(More)
The establishment of the steady-state rate of photosynthetic O2 evolution by cells of Anabaena variabilis and other cyanobacteria was found to be preceded by a lag-phase the duration of which depended on the time of cell preincubation in the dark. Electron acceptors (benzoquinone, N,N,N′,N′-tetramethyl-p-phenylenediamine,(More)
Melafen, a synthetic plant growth regulator, stimulates the growth of periodic cultures of cyanobacteria Anacystis nidulans and Anabaena variabilis and green microalgae Chlorella vulgaris by 30–80%, when applied within the concentration range of 10−8–10−6 M. If the melafen concentration lies out of this range, it is either ineffective or inhibits the growth(More)
1. Electric generation by bacteriochlorophyll reaction center complexes from Rhodospirillum rubrum and by photosystem I complexes from pea chloroplasts has been studied. 2. The methods for the proteoliposome reconstitution from azolectin and bacteriochlorophyll- or plant chlorophyll-containing protein complexes have been elaborated. Light-dependent electric(More)
Melafen stimulating effect on cell growth of cyanobacteria Synechococcus sp. PCC 6301 cultures amounted to 30–45% at 1000 lx illumination. The melafen effect decreased when cell cultures were exposed at the illumination of the saturation range (4000 lx). Growth rate and biomass increase of Anabaena variabilis, as well as the observed melafen stimulating(More)
The redox potential dependence of the light-induced absorption changes of bacteriochlorophyll in chromatophores and subchromatophore pigment-protein complexes from Rhodospirillum rubrum has been examined. The highest values of the absorption changes due to the bleaching of P-870 and the blue shift of P-800 in chromatophores and subchromatophore complexes(More)
Five prospective microbial associations for conversion of stillage carbohydrates (sugars and dextrins) to acetate have been isolated from natural and anthropogenic sources. The characteristics of biological treatment of the stillage containing up to 40 g of carbohydrates/L have been studied using the Tambukan Silt association immobilized on the polymer(More)
Uncouplers of photosynthetic phosphorylation, CCCP, TTFB and PCP, inhibited light-induced O2 evolution in the Hill reaction with SiMo (I50 approximately 20, 3 and 45 microM, respectively), but only insignificantly diminished SiMo photoreduction by pea chloroplasts. The same properties were exhibited by the ADRY agent ANT2p. CCCP, TTFB and PCP are oxidizable(More)