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Production of starch nanoparticles by dissolution and non-solvent precipitation for use in food-grade Pickering emulsions

Saari, Hisfazilah LU ; Fuentes, Catalina LU ; Sjöö, Malin LU ; Rayner, Marilyn LU and Wahlgren, Marie LU (2017) In Carbohydrate Polymers 157. p.558-566
Abstract

The aim of this study was to investigate non-solvent precipitation of starch to produce nanoparticles that could be used in Pickering emulsions. The material used was waxy maize, modified with octenyl succinic anhydride. Different methods of non-solvent precipitation were investigated, and a method based on direct mixing of an 8% starch solution and ethanol (ratio 1:1) was found to produce the smallest particles. The particle size was measured using AFM and AF4, and was found to be in the range 100–200 nm. However, both larger particles and aggregates of nanoparticles were observed. The emulsion produced using the precipitated starch particles had a droplet size that between 0.5 and 45 μm, compared to emulsions produced from waxy maize... (More)

The aim of this study was to investigate non-solvent precipitation of starch to produce nanoparticles that could be used in Pickering emulsions. The material used was waxy maize, modified with octenyl succinic anhydride. Different methods of non-solvent precipitation were investigated, and a method based on direct mixing of an 8% starch solution and ethanol (ratio 1:1) was found to produce the smallest particles. The particle size was measured using AFM and AF4, and was found to be in the range 100–200 nm. However, both larger particles and aggregates of nanoparticles were observed. The emulsion produced using the precipitated starch particles had a droplet size that between 0.5 and 45 μm, compared to emulsions produced from waxy maize granules, in which had a size of 10–100 μm. The drop in size contributed to increased stability against creaming. The amount of starch used for emulsion stabilization could also be substantially reduced.

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publication status
published
subject
in
Carbohydrate Polymers
volume
157
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:84994030225
  • wos:000391896800063
ISSN
0144-8617
DOI
10.1016/j.carbpol.2016.10.003
language
English
LU publication?
yes
id
54ea1a90-e044-4629-a34b-f47d431208ea
date added to LUP
2017-02-03 10:32:06
date last changed
2018-01-07 11:47:57
@article{54ea1a90-e044-4629-a34b-f47d431208ea,
  abstract     = {<p>The aim of this study was to investigate non-solvent precipitation of starch to produce nanoparticles that could be used in Pickering emulsions. The material used was waxy maize, modified with octenyl succinic anhydride. Different methods of non-solvent precipitation were investigated, and a method based on direct mixing of an 8% starch solution and ethanol (ratio 1:1) was found to produce the smallest particles. The particle size was measured using AFM and AF4, and was found to be in the range 100–200 nm. However, both larger particles and aggregates of nanoparticles were observed. The emulsion produced using the precipitated starch particles had a droplet size that between 0.5 and 45 μm, compared to emulsions produced from waxy maize granules, in which had a size of 10–100 μm. The drop in size contributed to increased stability against creaming. The amount of starch used for emulsion stabilization could also be substantially reduced.</p>},
  author       = {Saari, Hisfazilah and Fuentes, Catalina and Sjöö, Malin and Rayner, Marilyn and Wahlgren, Marie},
  issn         = {0144-8617},
  language     = {eng},
  month        = {02},
  pages        = {558--566},
  publisher    = {Elsevier},
  series       = {Carbohydrate Polymers},
  title        = {Production of starch nanoparticles by dissolution and non-solvent precipitation for use in food-grade Pickering emulsions},
  url          = {http://dx.doi.org/10.1016/j.carbpol.2016.10.003},
  volume       = {157},
  year         = {2017},
}