title: Preparation of nanoparticles by electrocoagulation from soluble exopolysaccharide produced by Claviceps viridis.
abstract: Electrocoagulation is an evolving technology that has been effectively applied for wastewater treatment but its applications in biotechnology and nanotechnology are very limited. This method was applied for the preparation of nanoparticles from soluble exopolysaccharide (EPS) produced by Claviceps viridis in a submerged batch culture. A cathode/anode pair electrode (Al or Fe) system was used for determination of the separation rates of electrocoagulation and the yields of EPS nanoparticles production. The separation rates of 0.170 +/- 0.003 mg EPS/sec (Fe electrodes) and 0.250 +/- 0.003 mg EPS/sec (Al electrodes) were calculated for voltage gradient 1 V/1 cm of electrodes distance and were constant during experiments. The specific yield of EPS nanoparticles production based on the consumed electric power was dependent on the material of the electrodes and its value was determined as 0.71 +/- 0.01 mg EPS/W for Fe electrodes and 0.91 +/- 0.01 mg EPS/W for Al electrodes, respectively.
authors.affiliation: Institute of Microbiology, Academy of Sciences of the Czech Republic, Vídenská 1083, Prague 4, Csech Republic CZ-142 20. flieger@biomed.cas.cz
authors.forename: M
authors.initials: M
authors.lastname: Flieger
authors.forename: M
authors.initials: M
authors.lastname: Kantorová
authors.forename: O
authors.initials: O
authors.lastname: Benada
authors.forename: O
authors.initials: O
authors.lastname: Kofronová
authors.forename: M
authors.initials: M
authors.lastname: Sobotka
authors.forename: J
authors.initials: J
authors.lastname: Cvak
authors.forename: J
authors.initials: J
authors.lastname: Votruba
mesh_terms: D011232:Chemical Precipitation; D002967:Claviceps / Q000378:metabolism*; D004563:Electrochemistry / Q000379:methods*; D004566:Electrodes; D004574:Electromagnetic Fields; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects*; D010316:Particle Size; D011134:Polysaccharides / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism / Q000528:radiation effects*; D012995:Solubility
chemical_list: D011134:Polysaccharides