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IMMOBILIZED BIOCATALYST [5 records]
Record 1 - internal organization data 2013-07-10
Record 1, English
Record 1, Subject field(s)
- Biochemistry
Record 1, Main entry term, English
- inherent kinetics
1, record 1, English, inherent%20kinetics
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The kinetics of the immobilized biocatalyst in the absence of... modifying factors. 1, record 1, English, - inherent%20kinetics
Record 1, French
Record 1, Domaine(s)
- Biochimie
Record 1, Main entry term, French
- cinétique intrinsèque
1, record 1, French, cin%C3%A9tique%20intrins%C3%A8que
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-08-09
Record 2, English
Record 2, Subject field(s)
- Biological Sciences
Record 2, Main entry term, English
- Thiele modulus
1, record 2, English, Thiele%20modulus
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The Thiele modulus is proportional to the molecular centre activity of the enzyme in question, that is, the number of molecules of substrate transformed per molecule per second, to the diffusion path presented to the substrate molecules by the support and to the affinity of the enzyme for the substrate, provided of course that the enzyme is evenly distributed within the support particles. When [phi] is large the effectiveness factor for the immobilized biocatalyst is low, and when [phi] approaches zero the effectiveness factor tends to unity. 1, record 2, English, - Thiele%20modulus
Record number: 2, Textual support number: 1 OBS
[phi] is a symbol used to denote the Thiele modulus. 2, record 2, English, - Thiele%20modulus
Record 2, French
Record 2, Domaine(s)
- Sciences biologiques
Record 2, Main entry term, French
- module de Thiele
1, record 2, French, module%20de%20Thiele
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Nombre adimensionnel permettant de déterminer le facteur d'efficacité d'une enzyme immobilisée sur un support donné et le régime limitant la réaction, pour les phénomènes diffusionnels. 2, record 2, French, - module%20de%20Thiele
Record number: 2, Textual support number: 1 CONT
Selon que les enzymes seront fixées près de la surface du support ou dans un pore, leur efficacité pourra varier dans de larges proportions. [...] Les valeurs du module de Thiele caractérisent la nature de la limitation de la réaction. En effet, si [phi] < 0,5, le facteur d'efficacité est égal à 1 et la cinétique de la réaction n'est pas affectée par la présence du support. Lorsque [phi] augmente, le facteur d'efficacité diminue et ce, plus rapidement pour un plan que pour un cylindre et que pour une sphère. 2, record 2, French, - module%20de%20Thiele
Record number: 2, Textual support number: 1 OBS
Le module de Thiele est désigné par [phi]. 2, record 2, French, - module%20de%20Thiele
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2010-12-22
Record 3, English
Record 3, Subject field(s)
- Biological Sciences
Record 3, Main entry term, English
- enzyme column
1, record 3, English, enzyme%20column
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- packed-bed column 2, record 3, English, packed%2Dbed%20column
correct
- packed column 2, record 3, English, packed%20column
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Columns can be operated in an expanded bed form at higher flow rates, so preventing fouling and compression and improving mass transfer. Alternatively packed biocatalyst particles can be used in a trickle-flow mode as in some waste-water processes employing microbial flocs.... Packed columns allow a high concentration of biocatalyst to be used. The product molecules or other inhibitors produced during the reaction are constantly swept out of the reactor so that the concentration of products are minimized-so less product inhibition occurs.... The decay of enzyme columns packed with immobilized enzyme or immobilized microbial cells generally proceeds in an exponential pattern related to operating time. 2, record 3, English, - enzyme%20column
Record number: 3, Textual support number: 1 OBS
Devices for continuous analysis using enzyme columns or enzyme-coated tubes have been developed to the stage where they can be commercialized. In order to scale up an enzyme column for industrial purposes, the following factors must be suitably selected; appropriate materials for the column, shape of the column, and a flow pump suitable for the pressure drop. 3, record 3, English, - enzyme%20column
Record 3, French
Record 3, Domaine(s)
- Sciences biologiques
Record 3, Main entry term, French
- colonne d'enzyme
1, record 3, French, colonne%20d%27enzyme
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Dans un premier type de réacteur, les enzymes insolubilisées, attachées à des particules, sont brassées dans le substrat. Cette technologie primitive, utilisée dans les industries agro-alimentaires, est simplement dérivée de celles utilisées pour les enzymes solubles. La récupération de l'enzyme insoluble reste délicate et s'opère au prix de grandes pertes. Aussi cette technique est-elle peu utilisée. Les autres types de réacteurs reposent sur le passage lent du substrat, à une vitesse déterminée par l'expérience, au travers d'une colonne d'enzyme immobilisée. Essentiellement, le produit de réaction circule X fois à travers la même colonne, jusqu'à l'obtention du rendement adéquat. De ce fait, le problème de la couche non agitée le long du support solide est atténué. 1, record 3, French, - colonne%20d%27enzyme
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1985-05-09
Record 4, English
Record 4, Subject field(s)
- Biochemistry
Record 4, Main entry term, English
- immobilized biocatalyst reactor 1, record 4, English, immobilized%20biocatalyst%20reactor
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Immobilized Biocatalyst Reactors.... The cost of most enzymes is such that they only become economic if they can be released. This has led to the development of immobilization techniques, which involve converting the water-soluble enzyme protein into a solid form of catalyst, either by entrapping the enzyme within a cross-linked matrix of a water-insoluble polymer or by binding the enzyme conically or covalently to the surface of a solid supporting material. 1, record 4, English, - immobilized%20biocatalyst%20reactor
Record 4, French
Record 4, Domaine(s)
- Biochimie
Record 4, Main entry term, French
- réacteur à catalyseur biologique immobilisé
1, record 4, French, r%C3%A9acteur%20%C3%A0%20catalyseur%20biologique%20immobilis%C3%A9
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Réacteurs à catalyseur biologique immobilisé. [...] Le coût de la plupart des enzymes est tel que leur emploi ne devient rentable que s'il est possible de les réutiliser. C'est pourquoi on a mis au point des techniques d'immobilisation, qui consistent à transformer la protéine enzymatique soluble dans l'eau en un catalyseur à l'état solide, en piégeant l'enzyme dans une matrice réticulée formée d'un polymère insoluble dans l'eau ou en l'attachant par une liaison conique ou covalente à la surface d'un support solide. 1, record 4, French, - r%C3%A9acteur%20%C3%A0%20catalyseur%20biologique%20immobilis%C3%A9
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1985-05-09
Record 5, English
Record 5, Subject field(s)
- Biochemistry
Record 5, Main entry term, English
- immobilized biocatalyst 1, record 5, English, immobilized%20biocatalyst
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Immobilized biocatalysts (enzymes, viable or non-viable microorganisms or other cells) ... are attractive in several ways: sense, or use over long periods of time; continuous processing; higher product yields; and simple recovery of products. 1, record 5, English, - immobilized%20biocatalyst
Record 5, French
Record 5, Domaine(s)
- Biochimie
Record 5, Main entry term, French
- biocatalyseur immobilisé
1, record 5, French, biocatalyseur%20immobilis%C3%A9
masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
les biocatalyseurs immobilisés (enzymes, micro-organismes viables ou non viables ou autres cellules) (...) sont avantageux à plusieurs égards : réemploi ou utilisation pendant de longues période; fabrication en continu; rendements plus élevés en produits; et facilité de récupération des produits. 1, record 5, French, - biocatalyseur%20immobilis%C3%A9
Record 5, Spanish
Record 5, Textual support, Spanish
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