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Določanje kritične koncentracije kisika v bioprocesu proizvodnje ergotamina : diplomska naloga = The influence of critical oxygen concentration in the bioprocess of ergotamine production : graduation thesisStojković, Saša, 1974-Znano je, da ogljikov dioksid pri določenih mejnih koncentracijah negativno vpliva na hitrost respiracije, s tem zavira rast in produktivnost proizvodnega seva. Namen naloge je bil odkriti razloge za ... različna optimalna režima aeracije v pilotnem in proizvodnem sistemu aerobnega bioprocesa produkcije alkaloida ergotamina. Razlogi za razlike med sistemoma so bili iskani v primerjavi kritične koncentracije kisika in hitrosti respiracije pri dveh različnih hitrostih mešanja v obeh sistemih. Vse meritve so bile opravljane ločeno za pilotni in proizvodni sistem. Kritična koncentracija kisika je bila določena v respirometru, in sicer kot točka začetka padanja prvega odvoda krivulje odvisnosti parcialnega tlaka kisika raztopljenega v bioprocesni brozgi od časa po nacepitvi inokuluma. Hitrost respiracije je bila določena preko bilance kisika in ogljikovega dioksida v vstopnem in izstopnem zraku ali pa v respirometru kot hitrost porabe kisika v odvisnosti od časa. Ugotovljeno je bilo, da so rezultati kritične koncentracije kisika in respiracije pri različnih hitrostih mešanja istega reda velikosti v pilotnem in proizvodnem sistemu. Torej ta parametra ne vplivata na odstopanja med sistemoma. Ob določanju hitrosti respiracije preko bilance ogljikovega dioksida je bilo ugotovljeno, da so vrednosti parcialnih tlakov ogljikovega dioksida v izstopnem zraku proizvodnega sistema veliko večje od istih v pilotnem sistemu. Razlike so bile še bolj izrazite pri večjih hitrostih mešanja in nižjih pretokih vstopnega zraka. Ogljikov dioksid, ki se je pri nizkih pretokih vstopnega zraka zadrževal v bioprocesni broygi, bi lahko pogojeval razlike v koncentracijah kisika pri uporabljenima režimoma kisika v pilotnem in proizvodnem sistemu.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [BF, Oddelek za živilstvo] : [S. Stojković], 1998Language - slovenianCOBISS.SI-ID - 2133112
Author
Stojković, Saša, 1974-
Other authors
Raspor, Peter |
Klofutar, Cveto
Topics
ergot alkaloidi |
ergotamin |
Claviceps purpurea |
respiracija |
kritična koncentracija kisika |
kritična koncentracija kisika |
ergot alkaloids |
ergotamine |
Claviceps purpurea |
critical oxygen concentration |
critical oxygen concentration
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Library/institution |
City | Acronym | For loan | Other holdings |
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BF, Department of Food Science and Technology, Lj. | Ljubljana | BFZIV |
outside loan 2 cop.
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DRS, in which the journal is indexed
Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Stojković, Saša, 1974- | 21439 |
Raspor, Peter | 04001 |
Klofutar, Cveto | 00177 |
Source: Personal bibliographies
and: SICRIS
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