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Yeast biocapsules: A new immobilization method and their applications

Paper ID Volume ID Publish Year Pages File Format Full-Text
18213 42714 2006 6 PDF Available
Title
Yeast biocapsules: A new immobilization method and their applications
Abstract

Penicillium has been used to immobilize Saccharomyces cerevisiae in the absence of physico-chemical external supports. The technique consists in reproducing conditions that are adequate for a forced symbiosis: a carbon source (gluconic acid) that can only be used by the filamentous fungus, buffered medium, and constant agitation. In this way, we obtained hollow spheres containing both microorganisms that were named “yeast biocapsules”. Repeated batch fermentation using yeast biocapsules were successfully carried out for at least seven times without any significant loss in ethanol production from molasses. The effects on must fermentation development and concentrations of by-products have been also studied. Only acetaldehyde, isobutanol, ethyl acetate and acetoin showed significant differences (p ≤ 0.05) when free and immobilized cells were compared. Lastly direct fermentation of starch to ethanol using this new immobilization system was also investigated. Additional potential applications of yeast biocapsules for biotechnological processes are proposed in this paper.

Keywords
Flor yeast; Biofilm; Biocapsules; Immobilization; Bioethanol; Wine
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 40, Issue 1, 6 December 2006, Pages 79–84
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