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Chemo-enzymatic epoxidation-process options for improving biocatalytic productivity.

Hagström, Anna LU ; Törnvall, Ulrika LU ; Nordblad, Mathias; Hatti-Kaul, Rajni LU and Woodley, John M (2011) In Biotechnology Progress 27(1). p.67-76
Abstract
The reactor choice is crucial when designing a process where inactivation of the biocatalyst is a problem. The main bottleneck for the chemo-enzymatic epoxidation has been found to be enzyme inactivation by the hydrogen peroxide, H(2)O(2), substrate. In the work reported here, the effect of reaction parameters on the reaction performance have been investigated and used to establish suitable operating strategies to minimize the inactivation of the enzyme, using rapeseed methyl ester (RME) as a substrate in a solvent-free system. The use of a controlled fed-batch reactor for maintaining H(2)O(2) concentration at 1.5 M resulted in increased productivity, up to 76 grams of product per gram of biocatalyst with higher retention of enzyme... (More)
The reactor choice is crucial when designing a process where inactivation of the biocatalyst is a problem. The main bottleneck for the chemo-enzymatic epoxidation has been found to be enzyme inactivation by the hydrogen peroxide, H(2)O(2), substrate. In the work reported here, the effect of reaction parameters on the reaction performance have been investigated and used to establish suitable operating strategies to minimize the inactivation of the enzyme, using rapeseed methyl ester (RME) as a substrate in a solvent-free system. The use of a controlled fed-batch reactor for maintaining H(2)O(2) concentration at 1.5 M resulted in increased productivity, up to 76 grams of product per gram of biocatalyst with higher retention of enzyme activity. Further investigation included a multistage design that separated the enzymatic reaction and the saturation of the RME substrate with H(2)O(2) into different vessels. This setup showed that the reaction rate as well as enzyme inactivation is strongly dependent on the H(2)O(2) concentration. A 20-fold improvement in enzymatic efficiency is required for reaching an economically feasible process. This will require a combination of enzyme modification and careful process design. © 2010 American Institute of Chemical Engineers Biotechnol. Prog., 2010. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Biotechnology Progress
volume
27
issue
1
pages
67 - 76
publisher
The American Chemical Society
external identifiers
  • wos:000287213200010
  • pmid:21038345
  • scopus:79851492690
ISSN
1520-6033
DOI
10.1002/btpr.504
language
English
LU publication?
yes
id
4dba9d71-af2a-4d7f-bb2f-9fafa3a406fc (old id 1732510)
date added to LUP
2010-12-16 14:15:02
date last changed
2017-09-10 04:01:36
@article{4dba9d71-af2a-4d7f-bb2f-9fafa3a406fc,
  abstract     = {The reactor choice is crucial when designing a process where inactivation of the biocatalyst is a problem. The main bottleneck for the chemo-enzymatic epoxidation has been found to be enzyme inactivation by the hydrogen peroxide, H(2)O(2), substrate. In the work reported here, the effect of reaction parameters on the reaction performance have been investigated and used to establish suitable operating strategies to minimize the inactivation of the enzyme, using rapeseed methyl ester (RME) as a substrate in a solvent-free system. The use of a controlled fed-batch reactor for maintaining H(2)O(2) concentration at 1.5 M resulted in increased productivity, up to 76 grams of product per gram of biocatalyst with higher retention of enzyme activity. Further investigation included a multistage design that separated the enzymatic reaction and the saturation of the RME substrate with H(2)O(2) into different vessels. This setup showed that the reaction rate as well as enzyme inactivation is strongly dependent on the H(2)O(2) concentration. A 20-fold improvement in enzymatic efficiency is required for reaching an economically feasible process. This will require a combination of enzyme modification and careful process design. © 2010 American Institute of Chemical Engineers Biotechnol. Prog., 2010.},
  author       = {Hagström, Anna and Törnvall, Ulrika and Nordblad, Mathias and Hatti-Kaul, Rajni and Woodley, John M},
  issn         = {1520-6033},
  language     = {eng},
  number       = {1},
  pages        = {67--76},
  publisher    = {The American Chemical Society},
  series       = {Biotechnology Progress},
  title        = {Chemo-enzymatic epoxidation-process options for improving biocatalytic productivity.},
  url          = {http://dx.doi.org/10.1002/btpr.504},
  volume       = {27},
  year         = {2011},
}