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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1-2
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pubmed:dateCreated |
1997-5-13
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pubmed:abstractText |
A Sulfolobus solfataricus beta-glycosidase expressed in Saccharomyces cerevisiae (S beta gly) was immobilized on chitosan activated with glutaraldehyde. The yield of immobilization was evaluated as 80%. Compared to the free beta-glycosidase, the immobilized enzyme showed a similar pH optimum (pH = 7.0), the same increasing activity up to 80 degrees C, improved thermostability, and no inhibition by glucose. Functional studies pointed out that the kinetic constant values for both enzymes were comparable. A bioreactor, assembled with the immobilized S beta gly, was used for glucose production. The values of cellobiose conversion increased on increasing residence time in the bioreactor, following a nonlinear trend. However, the highest glucose production/min was obtained at a flow of 0.5 mL/min.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Chitin,
http://linkedlifedata.com/resource/pubmed/chemical/Chitosan,
http://linkedlifedata.com/resource/pubmed/chemical/Enzymes, Immobilized,
http://linkedlifedata.com/resource/pubmed/chemical/Glucosidases,
http://linkedlifedata.com/resource/pubmed/chemical/Sulfolobus solfataricus...
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pubmed:status |
MEDLINE
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pubmed:issn |
0273-2289
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
61
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
157-66
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:9100353-Chitin,
pubmed-meshheading:9100353-Chitosan,
pubmed-meshheading:9100353-Enzyme Stability,
pubmed-meshheading:9100353-Enzymes, Immobilized,
pubmed-meshheading:9100353-Glucosidases,
pubmed-meshheading:9100353-Hydrogen-Ion Concentration,
pubmed-meshheading:9100353-Kinetics,
pubmed-meshheading:9100353-Saccharomyces cerevisiae,
pubmed-meshheading:9100353-Temperature
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pubmed:articleTitle |
Immobilization on chitosan of a thermophilic beta-glycosidase expressed in Saccharomyces cerevisiae.
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pubmed:affiliation |
Istituto di Biochimica delle Proteine ed Enzimologia, C. N. R., Naples, Italy.
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pubmed:publicationType |
Journal Article
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