Protein quality and physico-functionality of Australian sweet lupin (Lupinus angustifolius cv. Gungurru) protein concentrates prepared by isoelectric precipitation or ultrafiltration

Chew, Pei, Casey, Andrew and Johnson, Stuart 2003, Protein quality and physico-functionality of Australian sweet lupin (Lupinus angustifolius cv. Gungurru) protein concentrates prepared by isoelectric precipitation or ultrafiltration, Food chemistry, vol. 83, no. 4, pp. 575-583.

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Title Protein quality and physico-functionality of Australian sweet lupin (Lupinus angustifolius cv. Gungurru) protein concentrates prepared by isoelectric precipitation or ultrafiltration
Author(s) Chew, Pei
Casey, Andrew
Johnson, Stuart
Journal name Food chemistry
Volume number 83
Issue number 4
Start page 575
End page 583
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2003-12
ISSN 0308-8146
1873-7072
Keyword(s) Lupin
protein
ultrafiltration
Summary The protein quality and physico-functional properties of Australian sweet lupin protein concentrates, prepared by isoelectric precipitation or ultrafiltration, were assessed. The ultrafiltration process resulted in a higher yield of protein than did the isoelectric precipitation process. The lupin kernel and the two lupin protein concentrates had similar essential amino acid compositions that were inferior to ideal human requirements. True digestibilities of the isoelectrically precipitated (ISO) and the ultrafiltered (UF) lupin protein concentrates were similar but significantly higher (P<0.05) than that of casein. Net protein utilisations (NPU) of the ISO and UF protein concentrates were similar but significantly lower (P<0.05) than that of casein. The UF protein concentrate had higher protein solubility than did the ISO protein concentrate (P<0.05). Low foaming capacity, low viscosity, but high emulsification capacity (particularly at low pH) were observed for lupin protein concentrates.
Language eng
Field of Research 090899 Food Sciences not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2003, Elsevier Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30001986

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