Physicochemical properties of spray-dried model infant milk formula powders: Influence of whey protein-to-casein ratio

A.K.M. Masum*, Thom Huppertz, Jayani Chandrapala, Benu Adhikari, Bogdan Zisu

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The effect of whey protein-to-casein ratio (60:40, 50:50 and 40:60) on the physicochemical properties of model infant milk formula (IMF) wet-mixes and powders prepared therefrom was studied. A lower whey protein-to-casein ratio lowered the zeta potential and apparent viscosity of wet-mixes and increased the particle size after evaporation. Particle size and water activity of powders decreased with decreasing whey protein-to-casein ratio. Glass transition temperature, crystallinity, surface free fat content and solubility of the powders were similar and unaffected by protein composition. Surface composition of powders was substantially different from their bulk composition irrespective of the protein ratios, with fat representing more of the powders surface (∼42–44%) followed by protein (∼30–32%) and lactose (∼24–26%). Overall, IMF powders can be prepared by varying the whey protein-to-casein ratio without affecting the physicochemical properties of the feed and the spray-dried powders.

Original languageEnglish
Article number104565
JournalInternational Dairy Journal
Volume100
DOIs
Publication statusPublished - 1 Jan 2020

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Infant Formula
Caseins
whey protein
Powders
casein
powders
Milk
physicochemical properties
milk
protein composition
Particle Size
particle size
Fats
Proteins
glass transition temperature
Transition Temperature
Lactose
Whey Proteins
Viscosity
water activity

Cite this

@article{3817f473680d45928c1cd7666c0adb97,
title = "Physicochemical properties of spray-dried model infant milk formula powders: Influence of whey protein-to-casein ratio",
abstract = "The effect of whey protein-to-casein ratio (60:40, 50:50 and 40:60) on the physicochemical properties of model infant milk formula (IMF) wet-mixes and powders prepared therefrom was studied. A lower whey protein-to-casein ratio lowered the zeta potential and apparent viscosity of wet-mixes and increased the particle size after evaporation. Particle size and water activity of powders decreased with decreasing whey protein-to-casein ratio. Glass transition temperature, crystallinity, surface free fat content and solubility of the powders were similar and unaffected by protein composition. Surface composition of powders was substantially different from their bulk composition irrespective of the protein ratios, with fat representing more of the powders surface (∼42–44{\%}) followed by protein (∼30–32{\%}) and lactose (∼24–26{\%}). Overall, IMF powders can be prepared by varying the whey protein-to-casein ratio without affecting the physicochemical properties of the feed and the spray-dried powders.",
author = "A.K.M. Masum and Thom Huppertz and Jayani Chandrapala and Benu Adhikari and Bogdan Zisu",
year = "2020",
month = "1",
day = "1",
doi = "10.1016/j.idairyj.2019.104565",
language = "English",
volume = "100",
journal = "International Dairy Journal",
issn = "0958-6946",
publisher = "Elsevier",

}

Physicochemical properties of spray-dried model infant milk formula powders: Influence of whey protein-to-casein ratio. / Masum, A.K.M.; Huppertz, Thom; Chandrapala, Jayani; Adhikari, Benu; Zisu, Bogdan.

In: International Dairy Journal, Vol. 100, 104565, 01.01.2020.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Physicochemical properties of spray-dried model infant milk formula powders: Influence of whey protein-to-casein ratio

AU - Masum, A.K.M.

AU - Huppertz, Thom

AU - Chandrapala, Jayani

AU - Adhikari, Benu

AU - Zisu, Bogdan

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The effect of whey protein-to-casein ratio (60:40, 50:50 and 40:60) on the physicochemical properties of model infant milk formula (IMF) wet-mixes and powders prepared therefrom was studied. A lower whey protein-to-casein ratio lowered the zeta potential and apparent viscosity of wet-mixes and increased the particle size after evaporation. Particle size and water activity of powders decreased with decreasing whey protein-to-casein ratio. Glass transition temperature, crystallinity, surface free fat content and solubility of the powders were similar and unaffected by protein composition. Surface composition of powders was substantially different from their bulk composition irrespective of the protein ratios, with fat representing more of the powders surface (∼42–44%) followed by protein (∼30–32%) and lactose (∼24–26%). Overall, IMF powders can be prepared by varying the whey protein-to-casein ratio without affecting the physicochemical properties of the feed and the spray-dried powders.

AB - The effect of whey protein-to-casein ratio (60:40, 50:50 and 40:60) on the physicochemical properties of model infant milk formula (IMF) wet-mixes and powders prepared therefrom was studied. A lower whey protein-to-casein ratio lowered the zeta potential and apparent viscosity of wet-mixes and increased the particle size after evaporation. Particle size and water activity of powders decreased with decreasing whey protein-to-casein ratio. Glass transition temperature, crystallinity, surface free fat content and solubility of the powders were similar and unaffected by protein composition. Surface composition of powders was substantially different from their bulk composition irrespective of the protein ratios, with fat representing more of the powders surface (∼42–44%) followed by protein (∼30–32%) and lactose (∼24–26%). Overall, IMF powders can be prepared by varying the whey protein-to-casein ratio without affecting the physicochemical properties of the feed and the spray-dried powders.

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