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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1990-8-2
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pubmed:abstractText |
The effective diffusion coefficient of sucrose in 5% calcium alginate gel containing 41.6 g.d.c. l-1. Saccharomyces cerevisiae was investigated. Both free and immobilized S. cerevisiae in 0.175 cm and 0.3 cm diameter particles were used and the reactions were achieved in a medium containing 100 g l-1 sucrose and 0.05 M CaCl2. With the assumption that the microorganisms did not grow or die in this medium, the results were analyzed according to Michaelis-Menten kinetics and the values of the parameters were determined as: Vm = 0.256 g ml-1 gel h-1, Km0 = 0.097 g ml-1, Km1 = 0.125 g ml-1, and Km2 = 0.165 g ml-1. Using these values, effectiveness factors were calculated as eta 1 = 0.89 and eta 2 = 0.76, and effective diffusion coefficients for sucrose in calcium alginate gel were determined as De1 = 4.1 X 10(-6) cm2 s-1 and De2 = 4.0 X 10(-6) cm2 s-1, for the particle size involved.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
B
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Alginates,
http://linkedlifedata.com/resource/pubmed/chemical/Calcium,
http://linkedlifedata.com/resource/pubmed/chemical/Gels,
http://linkedlifedata.com/resource/pubmed/chemical/Glucuronic Acid,
http://linkedlifedata.com/resource/pubmed/chemical/Hexuronic Acids,
http://linkedlifedata.com/resource/pubmed/chemical/Sucrose,
http://linkedlifedata.com/resource/pubmed/chemical/alginic acid
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pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0141-0229
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
12
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
124-6
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:1366577-Alginates,
pubmed-meshheading:1366577-Calcium,
pubmed-meshheading:1366577-Diffusion,
pubmed-meshheading:1366577-Gels,
pubmed-meshheading:1366577-Glucuronic Acid,
pubmed-meshheading:1366577-Hexuronic Acids,
pubmed-meshheading:1366577-Kinetics,
pubmed-meshheading:1366577-Saccharomyces cerevisiae,
pubmed-meshheading:1366577-Sucrose
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pubmed:year |
1990
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pubmed:articleTitle |
Effective diffusion coefficient of sucrose in calcium alginate gel.
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pubmed:affiliation |
Department of Chemical Engineering, Science Faculty, Ankara University, Tandogan, Turkey.
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pubmed:publicationType |
Journal Article
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