Maillard reaction and protein cross-linking in relation to the solubility of milk powders

Le, Thao T., Bhandari, Bhesh, Holland, John W. and Deeth, Hilton C. (2011) Maillard reaction and protein cross-linking in relation to the solubility of milk powders. Journal of Agricultural and Food Chemistry, 59 23: 12473-12479. doi:10.1021/jf203460z


Author Le, Thao T.
Bhandari, Bhesh
Holland, John W.
Deeth, Hilton C.
Title Maillard reaction and protein cross-linking in relation to the solubility of milk powders
Journal name Journal of Agricultural and Food Chemistry   Check publisher's open access policy
ISSN 0021-8561
1520-5118
Publication date 2011-12-14
Sub-type Article (original research)
DOI 10.1021/jf203460z
Volume 59
Issue 23
Start page 12473
End page 12479
Total pages 7
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2012
Language eng
Abstract Protein changes in relation to solubility, Maillard reaction (MR), and protein cross-linking in whole milk powder (WMP), skim milk powder (SMP), and whey protein concentrate (WPC) stored at different relative humidities (RHs) were investigated by chemical and electrophoretic methods. WMP and SMP reached minimum solubility rapidly, while WPC showed no change in solubility. The loss of solubility corresponded with development of high-molecular-weight protein complexes observed by two-dimensional electrophoresis. The maximal MR rate occurred at 66% RH for WMP and SMP (high lactose/protein ratios) and 84% RH for WPC (low lactose/protein ratios) based on the furosine and hydroxymethylfurfural contents. However, browning was greatest at 84% RH in all powders. The minimum solubility corresponded with the casein and fat contents. The retention of solubility and minimal protein cross-linking of WPC compared to casein-containing powders suggest that the casein content and cross-linking strongly influence the decrease in the solubility of milk powder.
Keyword Maillard reaction
Protein cross-linking
Milk powders
Solubility
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Agriculture and Food Sciences
Institute for Molecular Bioscience - Publications
 
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