TY - JOUR
T1 - Effect of Protein Content on Heat Stability of Reconstituted Milk Protein Concentrate under Controlled Shearing
AU - Mediwaththe, Anushka
AU - Huppertz, Thom
AU - Chandrapala, Jayani
AU - Vasiljevic, Todor
PY - 2024/1/14
Y1 - 2024/1/14
N2 - Milk protein concentrates (MPCs) possess significant potential for diverse applications in the food industry. However, their heat stability may be a limitation to achieving optimal functional performance. Shearing, an inherent process in food manufacturing, can also influence the functionality of proteins. The aim of this research was to examine the heat stability of reconstituted MPCs prepared at two protein concentrations (4% and 8% w/w protein) when subjected to varying levels of shearing (100, 1000, or 1500 s−1) during heating at 90 °C for 5 min or 121 °C for 2.6 min. While the impact of shear was relatively minor at 4% protein, it was more pronounced in 8% protein MPC suspensions, leading to a considerable decline in heat stability. An increase in protein concentration to 8% amplified protein interactions, intensified by shearing. This, in turn, resulted in comparatively higher aggregation at elevated temperatures and subsequently reduced the heat stability of the reconstituted MPCs.
AB - Milk protein concentrates (MPCs) possess significant potential for diverse applications in the food industry. However, their heat stability may be a limitation to achieving optimal functional performance. Shearing, an inherent process in food manufacturing, can also influence the functionality of proteins. The aim of this research was to examine the heat stability of reconstituted MPCs prepared at two protein concentrations (4% and 8% w/w protein) when subjected to varying levels of shearing (100, 1000, or 1500 s−1) during heating at 90 °C for 5 min or 121 °C for 2.6 min. While the impact of shear was relatively minor at 4% protein, it was more pronounced in 8% protein MPC suspensions, leading to a considerable decline in heat stability. An increase in protein concentration to 8% amplified protein interactions, intensified by shearing. This, in turn, resulted in comparatively higher aggregation at elevated temperatures and subsequently reduced the heat stability of the reconstituted MPCs.
KW - aggregation
KW - heat stability
KW - milk protein concentrate
KW - protein concentration
KW - shear
U2 - 10.3390/foods13020263
DO - 10.3390/foods13020263
M3 - Article
AN - SCOPUS:85183380741
SN - 2304-8158
VL - 13
JO - Foods
JF - Foods
IS - 2
M1 - 263
ER -