Effect of heating milk on whey protein denaturation and cheese-making properties

The cheese-making properties of milk heated at 80 °C for different times (0–8 min), and mixtures of severely-heated milk (80 °C, 30 min) with non-heated milk were evaluated in separate experiments. In both approaches, milk pH was adjusted to 6.3, 6.7 or 7.0 before heating. Despite different distribu...

Full description

Saved in:
Bibliographic Details
Published in:International dairy journal 2020-12, Vol.111, p.104831, Article 104831
Main Authors: Giroux, Hélène J., Dupont, Florence, Villeneuve, Geneviève, Britten, Michel
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The cheese-making properties of milk heated at 80 °C for different times (0–8 min), and mixtures of severely-heated milk (80 °C, 30 min) with non-heated milk were evaluated in separate experiments. In both approaches, milk pH was adjusted to 6.3, 6.7 or 7.0 before heating. Despite different distributions of denatured whey protein (WP) between casein micelle surface and serum phase, heating pH had no significant effect on cheese-making properties. The two approaches were compared by reporting the results as a function of WP denaturation rate in milk. The mixed milk approach showed a higher detrimental effect on rennet-induced coagulation kinetics and curd contraction capacity during cooking than the heated milk approach. For similar WP-denaturation rate, higher yield was obtained for the mixed milk than the heated milk as a result of the better protein retention and larger increase of cheese moisture.
ISSN:0958-6946
1879-0143
DOI:10.1016/j.idairyj.2020.104831