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dc.contributor.author
Manzo, Ricardo Martín
dc.contributor.author
de Sousa, Marylane
dc.contributor.author
Fenoglio, Cecilia Lorena
dc.contributor.author
Gonçalves, Luciana Rocha Barro
dc.contributor.author
Mammarella, Enrique José
dc.date.available
2019-04-02T19:36:04Z
dc.date.issued
2015-10
dc.identifier.citation
Manzo, Ricardo Martín; de Sousa, Marylane; Fenoglio, Cecilia Lorena; Gonçalves, Luciana Rocha Barro; Mammarella, Enrique José; Chemical improvement of chitosan-modified beads for the immobilization of Enterococcus faecium DBFIQ E36 l-arabinose isomerase through multipoint covalent attachment approach; Springer Heidelberg; Journal of Industrial Microbiology & Biotechnology; 42; 10; 10-2015; 1325-1340
dc.identifier.issn
1367-5435
dc.identifier.uri
http://hdl.handle.net/11336/73016
dc.description.abstract
d-tagatose is produced from d-galactose by the enzyme l-arabinose isomerase (L-AI) in a commercially viable bioprocess. An active and stable biocatalyst was obtained by modifying chitosan gel structure through reaction with TNBS, d-fructose or DMF, among others. This led to a significant improvement in L-AI immobilization via multipoint covalent attachment approach. Synthetized derivatives were compared with commercial supports such as Eupergit® C250L and glyoxal-agarose. The best chitosan derivative for L-AI immobilization was achieved by reacting 4 % (w/v) d-fructose with 3 % (w/v) chitosan at 50 °C for 4 h. When compared to the free enzyme, the glutaraldehyde-activated chitosan biocatalyst showed an apparent activity of 88.4 U ggel −1 with a 211-fold stabilization factor while the glyoxal-agarose biocatalyst gave an apparent activity of 161.8 U ggel −1 with an 85-fold stabilization factor. Hence, chitosan derivatives were comparable to commercial resins, thus becoming a viable low-cost strategy to obtain high active L-AI insolubilized derivatives.d-tagatose is produced from d-galactose by the enzyme l-arabinose isomerase (L-AI) in a commercially viable bioprocess. An active and stable biocatalyst was obtained by modifying chitosan gel structure through reaction with TNBS, d-fructose or DMF, among others. This led to a significant improvement in L-AI immobilization via multipoint covalent attachment approach. Synthetized derivatives were compared with commercial supports such as Eupergit® C250L and glyoxal-agarose. The best chitosan derivative for L-AI immobilization was achieved by reacting 4 % (w/v) d-fructose with 3 % (w/v) chitosan at 50 °C for 4 h. When compared to the free enzyme, the glutaraldehyde-activated chitosan biocatalyst showed an apparent activity of 88.4 U ggel −1 with a 211-fold stabilization factor while the glyoxal-agarose biocatalyst gave an apparent activity of 161.8 U ggel −1 with an 85-fold stabilization factor. Hence, chitosan derivatives were comparable to commercial resins, thus becoming a viable low-cost strategy to obtain high active L-AI insolubilized derivatives.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer Heidelberg
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Chitosan
dc.subject
D-Galactose
dc.subject
D-Tagatose
dc.subject
Immobilization
dc.subject
L-Arabinose Isomerase
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Multipoint Covalent Attachment
dc.subject.classification
Biotecnología Industrial
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Biotecnología Industrial
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Chemical improvement of chitosan-modified beads for the immobilization of Enterococcus faecium DBFIQ E36 l-arabinose isomerase through multipoint covalent attachment approach
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-04-01T16:02:23Z
dc.journal.volume
42
dc.journal.number
10
dc.journal.pagination
1325-1340
dc.journal.pais
Alemania
dc.journal.ciudad
HEIDELBERG
dc.description.fil
Fil: Manzo, Ricardo Martín. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: de Sousa, Marylane. Universidade Estadual do Ceará; Brasil
dc.description.fil
Fil: Fenoglio, Cecilia Lorena. Universidad Nacional del Litoral; Argentina
dc.description.fil
Fil: Gonçalves, Luciana Rocha Barro. Universidade Estadual do Ceará; Brasil
dc.description.fil
Fil: Mammarella, Enrique José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title
Journal of Industrial Microbiology & Biotechnology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs10295-015-1662-1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10295-015-1662-1
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