Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality
Norway is the world largest producer of Atlantic salmon (Salmo salar). In 2013 the Norwegian aquaculture industry produced 1.2 million metric tons salmon with the use of 1.5 million metric tons of commercial feeds. The feeds are delivered to the farms in big bags or in bulk and are conveyed pneumati...
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Language: | English |
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The University of Bergen
2015
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ftunivbergen:oai:bora.uib.no:1956/10080 2023-05-15T15:32:59+02:00 Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality Samuelsen, Tor Andreas 2015-06-19 application/pdf https://hdl.handle.net/1956/10080 eng eng The University of Bergen Paper I: Samuelsen, T.A., Mjøs, S.A. & Oterhals, Å. (2013) Impact of variability in fishmeal physicochemical properties on the extrusion process, starch gelatinization and pellet durability and hardness. Animal Feed Science and Technology, 179, 77-84. Full text not available in BORA due to publisher restrictions. The article is available at: http://dx.doi.org/10.1016/j.anifeedsci.2012.10.009 . Paper II: Samuelsen, T.A., Mjøs, S.A. & Oterhals, Å. (2014) Influence of type of raw material on fishmeal physicochemical properties, the extrusion process, starch gelatinization and physical quality of fish feed. Aquaculture Nutrition, 20, 410-420. The article is available at: http://dx.doi.org/10.1111/anu.12093 . Paper III: Samuelsen, T.A. & Oterhals, Å. (2015) Water-soluble protein level in fishmeal affects extrusion behaviour, phase transitions and physical quality of feed. Aquaculture Nutrition, published online 27.01.2015. The article is available at: http://dx.doi.org/10.1111/anu.12235 . Paper IV: Oterhals, Å. & Samuelsen, T.A. (2015) Plasticization effect of solubles in fishmeal. Food Research International, 69, 313-321. The article is available at: http://dx.doi.org/10.1016/j.foodres.2014.12.028 . https://hdl.handle.net/1956/10080 cristin:1246956 Copyright the author. All rights reserved. Doctoral thesis 2015 ftunivbergen 2023-03-14T17:43:45Z Norway is the world largest producer of Atlantic salmon (Salmo salar). In 2013 the Norwegian aquaculture industry produced 1.2 million metric tons salmon with the use of 1.5 million metric tons of commercial feeds. The feeds are delivered to the farms in big bags or in bulk and are conveyed pneumatically to the sea cages. Such harsh treatments expose pellets to stress that may give product loss due to abrasion and fragmentation. Feed loss in pneumatic feeding systems is estimated to be in the range of 0.3% to 1.5%. This equals a yearly additional expense of around 40 to 200 million NOK for the Norwegian salmon industry. To minimize product loss the feed has to be of a consistent and high physical quality. Extrusion processing is a technology that enables production of such feed quality. Physical pellet quality is normally improved by the addition of starch and other binders, but recent research has shown that the protein ingredients in the feed mix also impact the physical quality of extruded feed products. During the last decade several new plant derived protein ingredients has been introduced and partly replaced fishmeal. This has introduced new challenges in fish feed extrusion and stressed the importance to improve the knowledge related to the technical properties of the individual ingredients. The main objectives of this work have been to quantify fishmeal physicochemical properties with significant effects on the extrusion cooking process and physical pellet quality, and to study the plasticization effect of water solubles in fishmeal. Various multivariate analytical techniques have been applied in the studies, such as principal component analysis, partial least squares -and multiple linear regression. In Paper I and II, the impact of variation in fishmeal physicochemical properties were assessed based on standardized extrusion, drying and coating conditions. In Paper III the effect of water-soluble protein level and moisture content on the extrusion process, extrudate phase transitions and physical ... Doctoral or Postdoctoral Thesis Atlantic salmon Salmo salar University of Bergen: Bergen Open Research Archive (BORA-UiB) Norway Animal Feed Science and Technology 179 1-4 77 84 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Norway is the world largest producer of Atlantic salmon (Salmo salar). In 2013 the Norwegian aquaculture industry produced 1.2 million metric tons salmon with the use of 1.5 million metric tons of commercial feeds. The feeds are delivered to the farms in big bags or in bulk and are conveyed pneumatically to the sea cages. Such harsh treatments expose pellets to stress that may give product loss due to abrasion and fragmentation. Feed loss in pneumatic feeding systems is estimated to be in the range of 0.3% to 1.5%. This equals a yearly additional expense of around 40 to 200 million NOK for the Norwegian salmon industry. To minimize product loss the feed has to be of a consistent and high physical quality. Extrusion processing is a technology that enables production of such feed quality. Physical pellet quality is normally improved by the addition of starch and other binders, but recent research has shown that the protein ingredients in the feed mix also impact the physical quality of extruded feed products. During the last decade several new plant derived protein ingredients has been introduced and partly replaced fishmeal. This has introduced new challenges in fish feed extrusion and stressed the importance to improve the knowledge related to the technical properties of the individual ingredients. The main objectives of this work have been to quantify fishmeal physicochemical properties with significant effects on the extrusion cooking process and physical pellet quality, and to study the plasticization effect of water solubles in fishmeal. Various multivariate analytical techniques have been applied in the studies, such as principal component analysis, partial least squares -and multiple linear regression. In Paper I and II, the impact of variation in fishmeal physicochemical properties were assessed based on standardized extrusion, drying and coating conditions. In Paper III the effect of water-soluble protein level and moisture content on the extrusion process, extrudate phase transitions and physical ... |
format |
Doctoral or Postdoctoral Thesis |
author |
Samuelsen, Tor Andreas |
spellingShingle |
Samuelsen, Tor Andreas Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
author_facet |
Samuelsen, Tor Andreas |
author_sort |
Samuelsen, Tor Andreas |
title |
Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
title_short |
Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
title_full |
Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
title_fullStr |
Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
title_full_unstemmed |
Fishmeal physicochemical properties. Impact on the fish feed extrusion process, phase transitions and physical pellet quality |
title_sort |
fishmeal physicochemical properties. impact on the fish feed extrusion process, phase transitions and physical pellet quality |
publisher |
The University of Bergen |
publishDate |
2015 |
url |
https://hdl.handle.net/1956/10080 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
Paper I: Samuelsen, T.A., Mjøs, S.A. & Oterhals, Å. (2013) Impact of variability in fishmeal physicochemical properties on the extrusion process, starch gelatinization and pellet durability and hardness. Animal Feed Science and Technology, 179, 77-84. Full text not available in BORA due to publisher restrictions. The article is available at: http://dx.doi.org/10.1016/j.anifeedsci.2012.10.009 . Paper II: Samuelsen, T.A., Mjøs, S.A. & Oterhals, Å. (2014) Influence of type of raw material on fishmeal physicochemical properties, the extrusion process, starch gelatinization and physical quality of fish feed. Aquaculture Nutrition, 20, 410-420. The article is available at: http://dx.doi.org/10.1111/anu.12093 . Paper III: Samuelsen, T.A. & Oterhals, Å. (2015) Water-soluble protein level in fishmeal affects extrusion behaviour, phase transitions and physical quality of feed. Aquaculture Nutrition, published online 27.01.2015. The article is available at: http://dx.doi.org/10.1111/anu.12235 . Paper IV: Oterhals, Å. & Samuelsen, T.A. (2015) Plasticization effect of solubles in fishmeal. Food Research International, 69, 313-321. The article is available at: http://dx.doi.org/10.1016/j.foodres.2014.12.028 . https://hdl.handle.net/1956/10080 cristin:1246956 |
op_rights |
Copyright the author. All rights reserved. |
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Animal Feed Science and Technology |
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179 |
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