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Title

Antibody binding and functional properties of whey protein hydrolysates obtained under high pressure

AuthorsChicón, Rosa; Belloque, Josefina ; Alonso, Elena; López-Fandiño, Rosina
KeywordsWhey proteins
Hydrolysates
High pressure
IgG-binding
IgE-binding
Heat stability
Emulsifying activity
Issue DateMay-2009
PublisherElsevier
CitationFood Hydrocolloids 23(3): 593-599 (2009)
AbstractThis paper examines the potential of high hydrostatic pressure to produce whey protein hydrolysates that combine low immunoglobulin (Ig)G- and IgE-binding with acceptable functional properties, with the aim to produce milk-based ingredients with reduced potential allergenicity that could be used in hypoallergenic foods. Treatment with pepsin and chymotrypsin under high pressure produced, in minutes, hydrolysates in which α-lactalbumin and β-lactoglobulin were totally proteolysed, giving rise to large and hydrophobic peptides. Such hydrolysates presented reduced antigenicity and human IgE-binding properties. The hydrolysates obtained with pepsin at 400 MPa showed improved heat stability, particularly at a pH, close to the isoelectric point of the whey proteins, and their emulsion activity indexes at pH 7.0 were superior to those of the untreated whey proteins. These results suggest that the peptides present retained low antigenicity together with sufficient capacity to form emulsions.
Description7 pages, 4 figures.-- Available online May 18, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.foodhyd.2008.04.001
URIhttp://hdl.handle.net/10261/10389
DOI10.1016/j.foodhyd.2008.04.001
ISSN0268-005X
Appears in Collections:(IFI) Artículos
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