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Freezing and freeze-drying of Pickering emulsions stabilized by starch granules

Marefati, Ali LU ; Rayner, Marilyn LU ; Timgren, Anna LU ; Dejmek, Petr LU and Sjöö, Malin LU (2013) In Colloids and Surfaces A: Physicochemical and Engineering Aspects 436. p.512-520
Abstract
The aim of this study was to investigate the possibility to produce novel powder materials based on chemically modified starch granule stabilized Pickering oil-in-water (O/W) emulsions. This study also investigated the effect of partial starch gelatinization in situ, dispersed phase type (two oil types with different melting points), freezing method and thawing, and freeze-drying and rehydrating on the overall properties of the emulsions. The emulsions showed high freeze thaw stability. The results of this study demonstrated the feasibility of the production of oil containing hydrocolloid-based powders, through combination of heat treated or even non-heat treated starch Pickering emulsions and freeze-drying. The final powders comprised... (More)
The aim of this study was to investigate the possibility to produce novel powder materials based on chemically modified starch granule stabilized Pickering oil-in-water (O/W) emulsions. This study also investigated the effect of partial starch gelatinization in situ, dispersed phase type (two oil types with different melting points), freezing method and thawing, and freeze-drying and rehydrating on the overall properties of the emulsions. The emulsions showed high freeze thaw stability. The results of this study demonstrated the feasibility of the production of oil containing hydrocolloid-based powders, through combination of heat treated or even non-heat treated starch Pickering emulsions and freeze-drying. The final powders comprised high weight percentage of oil (over 80%, w/w). Upon rehydration of powders, the starch stabilized oil drops were found to be only moderately affected by the process with some aggregation observed. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Starch granules, Pickering emulsions, Hydrocolloid-based powders, Freeze, drying, Freeze-thaw stability
in
Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume
436
pages
512 - 520
publisher
Elsevier
external identifiers
  • wos:000326416900066
  • scopus:84881536114
ISSN
0927-7757
DOI
10.1016/j.colsurfa.2013.07.015
language
English
LU publication?
yes
id
8c760779-7b80-48e0-b052-1d4f80f2980f (old id 4212356)
date added to LUP
2014-01-07 11:20:11
date last changed
2019-05-21 02:15:25
@article{8c760779-7b80-48e0-b052-1d4f80f2980f,
  abstract     = {The aim of this study was to investigate the possibility to produce novel powder materials based on chemically modified starch granule stabilized Pickering oil-in-water (O/W) emulsions. This study also investigated the effect of partial starch gelatinization in situ, dispersed phase type (two oil types with different melting points), freezing method and thawing, and freeze-drying and rehydrating on the overall properties of the emulsions. The emulsions showed high freeze thaw stability. The results of this study demonstrated the feasibility of the production of oil containing hydrocolloid-based powders, through combination of heat treated or even non-heat treated starch Pickering emulsions and freeze-drying. The final powders comprised high weight percentage of oil (over 80%, w/w). Upon rehydration of powders, the starch stabilized oil drops were found to be only moderately affected by the process with some aggregation observed. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Marefati, Ali and Rayner, Marilyn and Timgren, Anna and Dejmek, Petr and Sjöö, Malin},
  issn         = {0927-7757},
  keyword      = {Starch granules,Pickering emulsions,Hydrocolloid-based powders,Freeze,drying,Freeze-thaw stability},
  language     = {eng},
  pages        = {512--520},
  publisher    = {Elsevier},
  series       = {Colloids and Surfaces A: Physicochemical and Engineering Aspects},
  title        = {Freezing and freeze-drying of Pickering emulsions stabilized by starch granules},
  url          = {http://dx.doi.org/10.1016/j.colsurfa.2013.07.015},
  volume       = {436},
  year         = {2013},
}