Serveur d'exploration sur l'opéra

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

The effects of temperature and viscosity on glucose diffusivity through saccharomyces cerevisiae biofilms

Identifieur interne : 002759 ( Main/Merge ); précédent : 002758; suivant : 002760

The effects of temperature and viscosity on glucose diffusivity through saccharomyces cerevisiae biofilms

Auteurs : Attilio Converti [Italie] ; Mario Zilli [Italie] ; Saleh Arni [Italie] ; Renzo Di Felice [Italie] ; Marco Del Borghi [Italie]

Source :

RBID : ISTEX:B895391F350C194C387351CB0C220AF4FA37AE4C

English descriptors

Abstract

The present study helps us to understand the effects of temperature and viscosity on bioprocesses in immobilized cell bioreactors. Glucose diffusivities through Saccharomyces cerevisiae biofilms are experimentally investigated at variable biofilm thickness, temperature, and concentration of carboxymethylcellulose (CMC) used as viscosity‐raising additive. Comparing these experimental values with those for free diffusion of glucose in water shows us that biofilm strongly reduces diffusivity (about 74%), mainly due to a decrease in the effective diffusion area. Only a slight increase in diffusivity is observed when biofilm thickness is increased. In addition, the results obtained in this work demonstrate that the well‐known empirical equations of Wilke and Chang, and of Guzman and Andrade can be combined to a relationship which takes into account the simultaneous effects of temperature and viscosity on the effective glucose diffusivity. This equation appears to be valid in glucose aqueous solutions whether or not biofilm is used, whereas it is not applicable when viscosity‐raising additives, such as CMC, are used.

Url:
DOI: 10.1002/cjce.5450770402

Links toward previous steps (curation, corpus...)


Links to Exploration step

ISTEX:B895391F350C194C387351CB0C220AF4FA37AE4C

Le document en format XML

<record>
<TEI wicri:istexFullTextTei="biblStruct">
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en">The effects of temperature and viscosity on glucose diffusivity through saccharomyces cerevisiae biofilms</title>
<author>
<name sortKey="Converti, Attilio" sort="Converti, Attilio" uniqKey="Converti A" first="Attilio" last="Converti">Attilio Converti</name>
</author>
<author>
<name sortKey="Zilli, Mario" sort="Zilli, Mario" uniqKey="Zilli M" first="Mario" last="Zilli">Mario Zilli</name>
</author>
<author>
<name sortKey="Arni, Saleh" sort="Arni, Saleh" uniqKey="Arni S" first="Saleh" last="Arni">Saleh Arni</name>
</author>
<author>
<name sortKey="Di Felice, Renzo" sort="Di Felice, Renzo" uniqKey="Di Felice R" first="Renzo" last="Di Felice">Renzo Di Felice</name>
</author>
<author>
<name sortKey="Del Borghi, Marco" sort="Del Borghi, Marco" uniqKey="Del Borghi M" first="Marco" last="Del Borghi">Marco Del Borghi</name>
</author>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:B895391F350C194C387351CB0C220AF4FA37AE4C</idno>
<date when="1999" year="1999">1999</date>
<idno type="doi">10.1002/cjce.5450770402</idno>
<idno type="url">https://api.istex.fr/document/B895391F350C194C387351CB0C220AF4FA37AE4C/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001758</idno>
<idno type="wicri:Area/Istex/Curation">001758</idno>
<idno type="wicri:Area/Istex/Checkpoint">000C50</idno>
<idno type="wicri:doubleKey">0008-4034:1999:Converti A:the:effects:of</idno>
<idno type="wicri:Area/Main/Merge">002759</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title level="a" type="main" xml:lang="en">The effects of temperature and viscosity on glucose diffusivity through saccharomyces cerevisiae biofilms</title>
<author>
<name sortKey="Converti, Attilio" sort="Converti, Attilio" uniqKey="Converti A" first="Attilio" last="Converti">Attilio Converti</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Italie</country>
<wicri:regionArea>Dipartimento di Ingegneria Chimica e diProcesso “G.B. Bonino”, Università di Genova, Via Opera Pia 15S, I‐16145 Genoa</wicri:regionArea>
<wicri:noRegion>I‐16145 Genoa</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Zilli, Mario" sort="Zilli, Mario" uniqKey="Zilli M" first="Mario" last="Zilli">Mario Zilli</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Italie</country>
<wicri:regionArea>Dipartimento di Ingegneria Chimica e diProcesso “G.B. Bonino”, Università di Genova, Via Opera Pia 15S, I‐16145 Genoa</wicri:regionArea>
<wicri:noRegion>I‐16145 Genoa</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Arni, Saleh" sort="Arni, Saleh" uniqKey="Arni S" first="Saleh" last="Arni">Saleh Arni</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Italie</country>
<wicri:regionArea>Dipartimento di Ingegneria Chimica e diProcesso “G.B. Bonino”, Università di Genova, Via Opera Pia 15S, I‐16145 Genoa</wicri:regionArea>
<wicri:noRegion>I‐16145 Genoa</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Di Felice, Renzo" sort="Di Felice, Renzo" uniqKey="Di Felice R" first="Renzo" last="Di Felice">Renzo Di Felice</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Italie</country>
<wicri:regionArea>Dipartimento di Ingegneria Chimica e diProcesso “G.B. Bonino”, Università di Genova, Via Opera Pia 15S, I‐16145 Genoa</wicri:regionArea>
<wicri:noRegion>I‐16145 Genoa</wicri:noRegion>
</affiliation>
</author>
<author>
<name sortKey="Del Borghi, Marco" sort="Del Borghi, Marco" uniqKey="Del Borghi M" first="Marco" last="Del Borghi">Marco Del Borghi</name>
<affiliation wicri:level="1">
<country xml:lang="fr">Italie</country>
<wicri:regionArea>Dipartimento di Ingegneria Chimica e diProcesso “G.B. Bonino”, Università di Genova, Via Opera Pia 15S, I‐16145 Genoa</wicri:regionArea>
<wicri:noRegion>I‐16145 Genoa</wicri:noRegion>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series>
<title level="j">The Canadian Journal of Chemical Engineering</title>
<title level="j" type="abbrev">Can. J. Chem. Eng.</title>
<idno type="ISSN">0008-4034</idno>
<idno type="eISSN">1939-019X</idno>
<imprint>
<publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher>
<pubPlace>Hoboken</pubPlace>
<date type="published" when="1999-08">1999-08</date>
<biblScope unit="volume">77</biblScope>
<biblScope unit="issue">4</biblScope>
<biblScope unit="page" from="618">618</biblScope>
<biblScope unit="page" to="626">626</biblScope>
</imprint>
<idno type="ISSN">0008-4034</idno>
</series>
<idno type="istex">B895391F350C194C387351CB0C220AF4FA37AE4C</idno>
<idno type="DOI">10.1002/cjce.5450770402</idno>
<idno type="ArticleID">CJCE5450770402</idno>
</biblStruct>
</sourceDesc>
<seriesStmt>
<idno type="ISSN">0008-4034</idno>
</seriesStmt>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>biofilm thickness</term>
<term>diffusivity</term>
<term>glucose</term>
<term>temperature</term>
<term>viscosity</term>
</keywords>
</textClass>
<langUsage>
<language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">The present study helps us to understand the effects of temperature and viscosity on bioprocesses in immobilized cell bioreactors. Glucose diffusivities through Saccharomyces cerevisiae biofilms are experimentally investigated at variable biofilm thickness, temperature, and concentration of carboxymethylcellulose (CMC) used as viscosity‐raising additive. Comparing these experimental values with those for free diffusion of glucose in water shows us that biofilm strongly reduces diffusivity (about 74%), mainly due to a decrease in the effective diffusion area. Only a slight increase in diffusivity is observed when biofilm thickness is increased. In addition, the results obtained in this work demonstrate that the well‐known empirical equations of Wilke and Chang, and of Guzman and Andrade can be combined to a relationship which takes into account the simultaneous effects of temperature and viscosity on the effective glucose diffusivity. This equation appears to be valid in glucose aqueous solutions whether or not biofilm is used, whereas it is not applicable when viscosity‐raising additives, such as CMC, are used.</div>
</front>
</TEI>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Musique/explor/OperaV1/Data/Main/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 002759 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Main/Merge/biblio.hfd -nk 002759 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Musique
   |area=    OperaV1
   |flux=    Main
   |étape=   Merge
   |type=    RBID
   |clé=     ISTEX:B895391F350C194C387351CB0C220AF4FA37AE4C
   |texte=   The effects of temperature and viscosity on glucose diffusivity through saccharomyces cerevisiae biofilms
}}

Wicri

This area was generated with Dilib version V0.6.21.
Data generation: Thu Apr 14 14:59:05 2016. Site generation: Thu Oct 8 06:48:41 2020