To What Extent Do Whey and Casein Micelle Proteins Influence the Morphology and Properties of the Resulting Powder?

How the type of protein influences particle morphology remains a hot topic of debate. In this study we focused on the drying behavior of two major milk protein types; that is, whey protein and native micellar caseins. To improve understanding of the role of each protein in the particle-forming mecha...

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Bibliographic Details
Published in:Drying technology 2014-01, Vol.32 (13), p.1540-1551
Main Authors: Sadek, Céline, Li, Huashan, Schuck, Pierre, Fallourd, Yannick, Pradeau, Nicolas, Le Floch-Fouéré, Cécile, Jeantet, Romain
Format: Article
Language:English
Subjects:
air flow
Casein
Droplets
Drying
Food preservation
functional properties
Kinetics
micelles
Milk
Morphology
Particle
powders
Proteins
rehydration
Sprayers
Sprays
Whey
whey protein
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Summary:How the type of protein influences particle morphology remains a hot topic of debate. In this study we focused on the drying behavior of two major milk protein types; that is, whey protein and native micellar caseins. To improve understanding of the role of each protein in the particle-forming mechanisms, seven mixtures containing different whey proteins to caseins ratios were investigated. A monodisperse spray dryer (MDSD) was used to produce uniform particles by drying monodispersed droplets in a hot, dry air flow. Single particles were also obtained from the same material using single droplet drying in a pendant configuration. Powders were characterized according to their physical characteristics and their rehydration properties. It was demonstrated that particle morphology was mainly governed by the type of protein matrix, almost regardless of the drying kinetics, which differed considerably between MDSD and single droplet drying. Controlling product formulation thus represents a potential means by which to tune particle morphology and therefore the functional properties of powder.
ISSN:1532-2300
0737-3937
1532-2300
DOI:10.1080/07373937.2014.915554