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Development of a statistical model for sorbitol production by free and immobilized Zymomonas mobilis in loofa sponge Luffa cylindrica

Paper ID Volume ID Publish Year Pages File Format Full-Text
36304 45127 2006 4 PDF Available
Title
Development of a statistical model for sorbitol production by free and immobilized Zymomonas mobilis in loofa sponge Luffa cylindrica
Abstract

Considering the capacity of Zymomonas mobilis ATCC29191 bacteria to produce sorbitol from fructose sources and the importance of difference factors in the fermentation process, the objective of this study was the development of a mixed modeling matrix to assess the effect of the sucrose concentration, fermentation time and type of process on sorbitol production by Zymomonas mobilis ATCC29191. The experiments were performed in times 12, 24 and 36 h, containing 200, 250 and 300 g/L sucrose. The fermentative process was analysed with free and immobilized cells. The sucrose concentration was not a relevant factor for the process but the fermentation time and the type of process were significant. The use of cells in the immobilized form and the 36 h time period presented maximum sorbitol productions. The production with immobilization was practically twice that obtained with free cells, increasing of 25 g/L with free cells for 50 g/L with immobilized cells. Thus, a model was developed with reasonable predictive capacity for sorbitol production. Zymomonas mobilis ATCC 29191 could be immobilized in Luffa cylindrica after adding chitosan for cell flocculation.

Keywords
Sorbitol; Zymomonasmobilis ATCC29191; Immobilization; Luffa cylindrica; Modeling
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Development of a statistical model for sorbitol production by free and immobilized Zymomonas mobilis in loofa sponge Luffa cylindrica
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 1, January 2006, Pages 240–243
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us