Anhydrous fat crystallization of ultrasonic treated goat milk: DSC and NMR relaxation studies
Document Type
Article
Publication Date
10-1-2021
Abstract
Methods of NMR relaxation and differential scanning calorimetry (DSC) were used to study the crystallization of anhydrous milk fat (AMF) obtained from milk and subjected to ultrasonic (US) processing. Amongst the changes in the crystallization nature under the influence of ultrasound are the decrease in the crystallization temperature and the increase in the melting enthalpy of the anhydrous milk fat samples. The increase is similar to 30% at 20 min of isothermal crystallization and is presumably explained by the additional formation of beta'-form crystals from the melt. The parameters of the Avrami equation applied to the description of experimental data show an increase in the crystallization rate in samples with ultrasonic treatment and a change in the dimension of crystallization with a change in melting temperature.
Keywords
Ultrasound, Anhydrous goat milk fat, Isothermal crystallization, DSC, NMR relaxation
Divisions
CHEMISTRY
Publication Title
Ultrasonics Sonochemistry
Volume
78
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS