New Polyethylenimine-Based Polycationic Polymers with Plant Additives for Immobilizing Phototrophic Microorganismsстатья
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Дата последнего поиска статьи во внешних источниках: 8 января 2021 г.
Аннотация:The immobilization of the microalgae (MA) of cells on biosorbents based on polyethyleneimineand cellulose-containing plant components is studied. Polyethyleneimine-based polycationic polymers havea high level of affinity for the surface structures of the MA and ensure that the cells are strongly attached tothe surface of the sorbent. The introduction of plant fillers in the composition of such polymers allows us toincrease their biodegradation rate and reduce costs. In the present study, six insoluble porous polymericmaterials obtained by the cryopolymerization of a mixture of polyethyleneimine and various plant componentsusing diethylene glycol diglycidyl ether were synthesized. The lyophilized biomass of plant cell culturesof Ajuga turkestanica and Polyscias fruticosa, as well as the cell-structured material (CSM) obtained from theirbiomass, is used as a bio-filler. Studying the kinetics and evaluating the efficiency of the immobilization ofcells of the model MA culture showed the high sorption ability of the obtained materials: after 24 hours ofcultivation, the efficiency of immobilization was 72–77%. Assessment of the level of the photosyntheticactivity of the MA cells using the method of pulse-simulated fluorimetry demonstrated that the studied biosorbentsdid not have any toxic effect on the cells and did not affect their functional activity. Novel biosorbentscan be effectively used to collect the biomass of microorganisms from natural aquatic environments andindustrial cultivators.