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A new engineering method for understanding extrusion cooking process

Cheng, Hongyuan and Friis, Alan (2009) A new engineering method for understanding extrusion cooking process. Poster at: American Association of Cerial Chemists (AACC), Baltimore, USA, 13-16 September 2009.

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Summary

A new engineering method is proposed to understand extrudate expansion and extrusion operation parameters for starch based food extrusion cooking process through dimensional analysis principle, i.e. Buckingham pi theorem. Three dimensionless groups, i.e. pump efficiency, water content and temperature, are suggested to describe the extrudate expansion. Using the three dimensionless groups, an equation is derived to express the extrudate expansion. The model has been used to correlate the experimental data for whole wheat flour and fish feed extrusion cooking. The average deviations of the correlation are respectively 5.9% and 9% for the whole wheat flour and the fish feed extrusion. An alternative 4-coefficient equation is also suggested from the 3 dimensionless groups. The average deviations of the alternative equation are respectively 5.8% and 2.5% in correlation with the same set of experimental data.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:Extrusion, cooking, expansion, fish feed
Subjects: Knowledge management
Research affiliation: Denmark > DARCOF III (2005-2010) > ORAQUA - Organic fish production
Deposited By: Jokumsen, Senior Advisory Scientist Alfred
ID Code:16126
Deposited On:11 Sep 2009 12:18
Last Modified:12 Apr 2010 07:40
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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