Kinetika biotransformace glycerolu na dihydroxyaceton pomocí imobilizovaných Gluconobacter Oxydans a vliv reakčních podmínek.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F07%3A00006082" target="_blank" >RIV/00216275:25310/07:00006082 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Kinetics of Glycerol Biotransformation to Dihydroxyacetone by Immobilized Gluconobacter Oxydans and Effect of Reaction Conditions

Popis výsledku v původním jazyce

Biotransformation of glycerol to 1,3-dihydroxyacetone was carried out in a batch isothermal isochoric reactor with Gluconobacter oxydans immobilized in capsules of poly(vinyl alcohol) gel. The reaction course was described with a three-step kinetic model. Two reaction schemes were proposed and compared with 8 kinetic experiments at 25 0C. The experimental dependences concentration of glycerol and dihydroxyacetone vs. reaction time were simulated very well by the Autocatalytic model. The effect of reaction temperature and initial concentrations of yeast extract and glycerol was studied. Temperature 25 - 30 oC, initial yeast extract concentration 2 - 4 g l-1 and initial glycerol concentration 20 - 50 g l-1 were found as optimal. The determined rate constants can be to advantage used for industrial production of dihydroxyacetone from glycerol.

Název v anglickém jazyce

Kinetics of Glycerol Biotransformation to Dihydroxyacetone by Immobilized Gluconobacter Oxydans and Effect of Reaction Conditions

Popis výsledku anglicky

Biotransformation of glycerol to 1,3-dihydroxyacetone was carried out in a batch isothermal isochoric reactor with Gluconobacter oxydans immobilized in capsules of poly(vinyl alcohol) gel. The reaction course was described with a three-step kinetic model. Two reaction schemes were proposed and compared with 8 kinetic experiments at 25 0C. The experimental dependences concentration of glycerol and dihydroxyacetone vs. reaction time were simulated very well by the Autocatalytic model. The effect of reaction temperature and initial concentrations of yeast extract and glycerol was studied. Temperature 25 - 30 oC, initial yeast extract concentration 2 - 4 g l-1 and initial glycerol concentration 20 - 50 g l-1 were found as optimal. The determined rate constants can be to advantage used for industrial production of dihydroxyacetone from glycerol.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Collection of Czechoslovak Chemical Cimmunications

ISSN

0010-0765

e-ISSN

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Svazek periodika

72

Číslo periodika v rámci svazku

N

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

15

Strana od-do

1269-1283

Kód UT WoS článku

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EID výsledku v databázi Scopus

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