• Log In
  • New issue alert
  • Submit a manuscript
  • Register
  • Home
  • About
  • Editorial Board
  • Search
  • Archives
  • Current
  • Forthcoming

Share

Article Panel


Vol 27 (2017)
»Table of Contents
Reading Tools
  • About the author
  • How to cite this article
  • Indexing metadata
  • Print version
  • Look up terms
  • Finding References
  • Review policy

Related items
  • Author's work


Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivatives 4.0 International.
Utilization of a waste glycerol fraction using immobilized cell extract from Gluconobacter oxydans ATCC 621 and its possible re-use | Stasiak-Różańska | Electronic Journal of Biotechnology
doi:10.1016/j.ejbt.2017.03.003
Electronic Journal of Biotechnology, Vol 27 (2017)

Utilization of a waste glycerol fraction using immobilized cell extract from Gluconobacter oxydans ATCC 621 and its possible re-use

Lidia Stasiak-Różańska, Stanisław Błażejak, Iwona Gientka, Anna Bzducha-Wróbel, Edyta Lipińska



Abstract

Background: Depletion of petroleum resources has enforced the search for alternative sources of renewable energy. Introduction of biofuels onto the market was expected to become a solution to this disadvantageous situation. Attempts to cover fuel demand have, however, caused another severe problem - a waste glycerol generated during biodiesel production in the quantity of ca. 10% w/w. This, in turn, prompted a global search for effective methods of valorization of the waste fraction of glycerol.

Results: The 48 h utilization of the waste fraction with the initial glycerol concentration of 30 gL-1, proceeding with 62% efficiency, enabled producing dihydroxyacetone with the concentration of 9 gL-1, at 50% substrate consumption. The re-use of the immobilized biocatalyst allowed achieving a similar concentration of dihydroxyacetone (8.7 gL-1) in two-fold shorter time at the efficiency of 85% and lower substrate consumption (35%).

Conclusions: The method proposed in this work is based on conversion of the waste glycerol to dihydroxyacetone in the reaction catalyzed by an immobilized cell extract with the activity of glycerol dehydrogenase, produced from Gluconobacter oxydans bacteria and it could be an effective way to utilize the waste glycerol into a valuable product.




Full Text: | PDF | HTML

ISSN:  0717-3458

Contact: edbiotec@pucv.cl

Pontificia Universidad Católica de Valparaíso
Av. Brasil 2950, Valparaíso, Chile
Copyright © 1997- 2023 by Electronic Journal of Biotechnology