Particle morphology and rehydration properties of spray-dried microgels and fractal aggregates with varying fractions of native milk serum proteins
(2021) In International Dairy Journal 112.- Abstract
To keep their functional properties, it is crucial that protein aggregates maintain their structure after spray drying and that the powders can be fully rehydrated. In this study, microgels and fractal aggregates were prepared by heating a mixture of milk serum protein concentrate and lactose (40/60; %, w/w) at 85 °C for 15 min by varying the pH. Various fractions of native proteins were added to the systems prior to spray drying. This study showed that microgels and fractal aggregates kept their structure after spray drying and reconstitution. The particle morphology could be correlated to the stiffness of the interface of the feed droplet. The forced imbibition rate showed a negative correlation with increasing amount of aggregated... (More)
To keep their functional properties, it is crucial that protein aggregates maintain their structure after spray drying and that the powders can be fully rehydrated. In this study, microgels and fractal aggregates were prepared by heating a mixture of milk serum protein concentrate and lactose (40/60; %, w/w) at 85 °C for 15 min by varying the pH. Various fractions of native proteins were added to the systems prior to spray drying. This study showed that microgels and fractal aggregates kept their structure after spray drying and reconstitution. The particle morphology could be correlated to the stiffness of the interface of the feed droplet. The forced imbibition rate showed a negative correlation with increasing amount of aggregated proteins in the powders that seems to be a result of denatured/aggregated proteins present at the surface. These findings are of importance for the formulation of spray-dried powders with improved rehydration characteristics.
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- author
- Andersson, I. M. LU ; Bergenståhl, B. LU ; Millqvist-Fureby, A. ; Alexander, M. ; Paulsson, M. LU and Glantz, M. LU
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- in
- International Dairy Journal
- volume
- 112
- article number
- 104862
- publisher
- Elsevier
- external identifiers
-
- scopus:85091578459
- ISSN
- 0958-6946
- DOI
- 10.1016/j.idairyj.2020.104862
- language
- English
- LU publication?
- yes
- id
- daa87ebe-fbf6-4618-829e-5a67ef4c0deb
- date added to LUP
- 2020-10-21 16:44:24
- date last changed
- 2023-12-19 06:20:28
@article{daa87ebe-fbf6-4618-829e-5a67ef4c0deb,
abstract = {{<p>To keep their functional properties, it is crucial that protein aggregates maintain their structure after spray drying and that the powders can be fully rehydrated. In this study, microgels and fractal aggregates were prepared by heating a mixture of milk serum protein concentrate and lactose (40/60; %, w/w) at 85 °C for 15 min by varying the pH. Various fractions of native proteins were added to the systems prior to spray drying. This study showed that microgels and fractal aggregates kept their structure after spray drying and reconstitution. The particle morphology could be correlated to the stiffness of the interface of the feed droplet. The forced imbibition rate showed a negative correlation with increasing amount of aggregated proteins in the powders that seems to be a result of denatured/aggregated proteins present at the surface. These findings are of importance for the formulation of spray-dried powders with improved rehydration characteristics.</p>}},
author = {{Andersson, I. M. and Bergenståhl, B. and Millqvist-Fureby, A. and Alexander, M. and Paulsson, M. and Glantz, M.}},
issn = {{0958-6946}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{International Dairy Journal}},
title = {{Particle morphology and rehydration properties of spray-dried microgels and fractal aggregates with varying fractions of native milk serum proteins}},
url = {{http://dx.doi.org/10.1016/j.idairyj.2020.104862}},
doi = {{10.1016/j.idairyj.2020.104862}},
volume = {{112}},
year = {{2021}},
}