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The addition of transglutaminase improves the physical quality of extruded fish feed

Wolska, Julia LU ; Jonkers, Jan; Holst, Olle LU and Adlercreutz, Patrick LU (2015) In Biotechnology Letters 37(11). p.2265-2270
Abstract
The possibility of improving the physical quality of extruded fish feed using transglutaminase (TGase) treatment at different stages of the production process was investigated. The addition of TGase to the raw material mix and processing under high and medium moisture conditions significantly increased (p > 0.05) the durability, hardness and elasticity of fish feed pellets. However, the water stability of feeds was only improved when the TGase was applied in the vacuum coater; when it was mixed with the dry raw materials, the water stability of the product decreased. By further optimization of the enzyme dose when added to the vacuum coater, an increase in pellet durability was observed at enzyme dosages between 2.5 and 5 g kg(-1).... (More)
The possibility of improving the physical quality of extruded fish feed using transglutaminase (TGase) treatment at different stages of the production process was investigated. The addition of TGase to the raw material mix and processing under high and medium moisture conditions significantly increased (p > 0.05) the durability, hardness and elasticity of fish feed pellets. However, the water stability of feeds was only improved when the TGase was applied in the vacuum coater; when it was mixed with the dry raw materials, the water stability of the product decreased. By further optimization of the enzyme dose when added to the vacuum coater, an increase in pellet durability was observed at enzyme dosages between 2.5 and 5 g kg(-1). Application of TGase in the coating step allowed an 87.5 % decrease in the dose of enzyme in feed produced under high moisture conditions. TGase treatment improves the physical quality of extruded fish feed, and the importance of optimization of enzyme dosage and processing conditions was demonstrated. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Durability, Fish feed, Physical quality, Transglutaminase, Water, stability
in
Biotechnology Letters
volume
37
issue
11
pages
2265 - 2270
publisher
Springer
external identifiers
  • wos:000361825200019
  • scopus:84942502946
ISSN
1573-6776
DOI
10.1007/s10529-015-1911-4
language
English
LU publication?
yes
id
d19201cc-5588-49e7-801b-b6d92a3c406f (old id 8058436)
date added to LUP
2015-10-20 15:30:28
date last changed
2017-01-01 05:54:04
@article{d19201cc-5588-49e7-801b-b6d92a3c406f,
  abstract     = {The possibility of improving the physical quality of extruded fish feed using transglutaminase (TGase) treatment at different stages of the production process was investigated. The addition of TGase to the raw material mix and processing under high and medium moisture conditions significantly increased (p > 0.05) the durability, hardness and elasticity of fish feed pellets. However, the water stability of feeds was only improved when the TGase was applied in the vacuum coater; when it was mixed with the dry raw materials, the water stability of the product decreased. By further optimization of the enzyme dose when added to the vacuum coater, an increase in pellet durability was observed at enzyme dosages between 2.5 and 5 g kg(-1). Application of TGase in the coating step allowed an 87.5 % decrease in the dose of enzyme in feed produced under high moisture conditions. TGase treatment improves the physical quality of extruded fish feed, and the importance of optimization of enzyme dosage and processing conditions was demonstrated.},
  author       = {Wolska, Julia and Jonkers, Jan and Holst, Olle and Adlercreutz, Patrick},
  issn         = {1573-6776},
  keyword      = {Durability,Fish feed,Physical quality,Transglutaminase,Water,stability},
  language     = {eng},
  number       = {11},
  pages        = {2265--2270},
  publisher    = {Springer},
  series       = {Biotechnology Letters},
  title        = {The addition of transglutaminase improves the physical quality of extruded fish feed},
  url          = {http://dx.doi.org/10.1007/s10529-015-1911-4},
  volume       = {37},
  year         = {2015},
}