Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 505888
Title Formation of β Polymorphs in Milk Fats with Large Differences in Triacylglycerol Profiles
Author(s) Tzompa-Sosa, Daylan A.; Ramel, Pere R.; Valenberg, Hein J.F. van; Aken, George A. van
Source Journal of Agricultural and Food Chemistry 64 (2016)20. - ISSN 0021-8561 - p. 4152 - 4157.
DOI https://doi.org/10.1021/acs.jafc.5b05737
Department(s) Food Quality and Design
VLAG
Physics and Physical Chemistry of Foods
Publication type Refereed Article in a scientific journal
Publication year 2016
Keyword(s) lipid polymorphism - milk fat crystallization - triacylglycerol - X-ray diffraction - β polymorphism
Abstract

In this study, we characterized the polymorphism of milk fat (MF) with various TAG compositions during isothermal crystallization at 20 °C. TAG composition of MF from seven individual cows was determined using GC-FID and MALDI-TOF MS, and MF polymorphism was studied using X-ray diffraction. Results showed that TAG profile determines the polymorphic behavior of MF. Saturated TAG with carbon numbers 34-38 promoted the formation of α polymorphs, whereas unsaturated TAG with 52-54 promoted the formation of the β polymorphs. Furthermore, MFs with unsaturated fatty acid profiles were increased in unsaturated TAG with 52-54 carbons. The presence of MF crystals in the β polymorph has been controversial over the years as most authors mainly find MF crystals in the α and β′ form. In our work, we showed that the β polymorph is formed in MF on the basis of its TAG composition.

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