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Raw material changes and their processing parameters in an extrusion cooking process

Cheng, Hongyuan; Rasmussen, Hanne and Friis, Alan (2009) Raw material changes and their processing parameters in an extrusion cooking process. Poster at: American Association of Cerial Chemists (AACC), Baltimore, USA, 13-16 September 2009.

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In this work, the effects of raw material and process parameters on product expansion in a fish feed extrusion process were investigated. Four different recipes were studied with a pilot-scale twin-screw co-rotating extruder according to a set of pre-defined processing conditions. In the four recipes, wheat and protein contents were adjusted and compared with a reference sample. It has been found that a dimensionless equation can well correlate the process parameters and product bulk density for the four different recipe extrusion. The average deviation of the correlation for bulk density is 2.4%. The experimental data show that product expansion decreases with increase of protein content. Several different methods have been applied to quantitatively correlate the changes of raw material composition with product bulk density.

EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Extrusion, process parameters, expansion, protein,
Subjects: Knowledge management
Research affiliation: Denmark > DARCOF III (2005-2010) > ORAQUA - Organic fish production
Deposited By: Jokumsen, Senior Advisory Scientist Alfred
ID Code:16127
Deposited On:14 Sep 2009 09:08
Last Modified:12 Apr 2010 07:40
Document Language:English
Refereed:Peer-reviewed and accepted

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