Nutritional aspects of food extrusion: a review

Singh, Shivendra, Gamlath, Shirani and Wakeling, Lara 2007, Nutritional aspects of food extrusion: a review, International journal of food science and technology, vol. 42, no. 8, pp. 916-929.


Title Nutritional aspects of food extrusion: a review
Author(s) Singh, Shivendra
Gamlath, Shirani
Wakeling, Lara
Journal name International journal of food science and technology
Volume number 42
Issue number 8
Start page 916
End page 929
Publisher Blackwell Scientific Publications
Place of publication Oxford, England
Publication date 2007-08
ISSN 0950-5423
1365-2621
Keyword(s) carbohydrates
dietary fibre
extrusion
Maillard reaction
minerals
protein
vitamins
Summary Extrusion cooking, as a multi-step, multi-functional and thermal/mechanical process, has permitted a large number of food applications. Effects of extrusion cooking on nutritional quality are ambiguous. Beneficial effects include destruction of antinutritional factors, gelatinisation of starch, increased soluble dietary fibre and reduction of lipid oxidation. On the other hand, Maillard reactions between protein and sugars reduce the nutritional value of the protein, depending on the raw material types, their composition and process conditions. Heat-labile vitamins may be lost to varying extents. Changes in proteins and amino acid profile, carbohydrates, dietary fibre, vitamins, mineral content and some non-nutrient healthful components of food may be either beneficial or deleterious. The present paper reviews the mechanisms underlying these changes, as well as the influence of process variables and feed characteristics. Mild extrusion conditions (high moisture content, low residence time, low temperature) improve the nutritional quality, while high extrusion temperatures (200 °C), low moisture contents (<15%) and/or improper formulation (e.g. presence of high-reactive sugars) can impair nutritional quality adversely. To obtain a nutritionally balanced extruded product, careful control of process parameters is essential.
Language eng
Field of Research 090805 Food Processing
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2007, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007526

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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