Keratin-Chitosan Microcapsules via Membrane Emulsification and Interfacial Complexation
Wilson, Amy ; Ekanem, Ekanem E. ; Mattia, Davide ; Edler, Karen J. LU
and Scott, Janet L.
(2021)
In ACS Sustainable Chemistry and Engineering
9(49).
p.16617-16626
- Abstract
The continuous fabrication via membrane emulsification of stable microcapsules using renewable, biodegradable biopolymer wall materials keratin and chitosan is reported here for the first time. Microcapsule formation was based on opposite charge interactions between keratin and chitosan, which formed polyelectrolyte complexes when solutions were mixed at pH 5.5. Interfacial complexation was induced by transfer of keratin-stabilized primary emulsion droplets to chitosan solution, where the deposition of chitosan around droplets formed a core-shell structure. Capsule formation was demonstrated both in batch and continuous systems, with the latter showing a productivity up to 4.5 million capsules per minute. Keratin-chitosan microcapsules... (More)
The continuous fabrication via membrane emulsification of stable microcapsules using renewable, biodegradable biopolymer wall materials keratin and chitosan is reported here for the first time. Microcapsule formation was based on opposite charge interactions between keratin and chitosan, which formed polyelectrolyte complexes when solutions were mixed at pH 5.5. Interfacial complexation was induced by transfer of keratin-stabilized primary emulsion droplets to chitosan solution, where the deposition of chitosan around droplets formed a core-shell structure. Capsule formation was demonstrated both in batch and continuous systems, with the latter showing a productivity up to 4.5 million capsules per minute. Keratin-chitosan microcapsules (in the 30-120 μm range) released less encapsulated nile red than the keratin-only emulsion, whereas microcapsules cross-linked with glutaraldehyde were stable for at least 6 months, and a greater amount of cross-linker was associated with enhanced dye release under the application of force due to increased shell brittleness. In light of recent bans involving microplastics in cosmetics, applications may be found in skin-pH formulas for the protection of oils or oil-soluble compounds, with a possible mechanical rupture release mechanism (e.g., rubbing on skin).
(Less)
- author
- Wilson, Amy
; Ekanem, Ekanem E.
; Mattia, Davide
; Edler, Karen J.
LU
and Scott, Janet L.
- publishing date
- 2021-12-13
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- biopolymer, chitosan, coacervation, keratin, layer-by-layer, membrane emulsification, microencapsulation, polyelectrolyte complex
- in
- ACS Sustainable Chemistry and Engineering
- volume
- 9
- issue
- 49
- pages
- 10 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:35024251
- scopus:85120865667
- ISSN
- 2168-0485
- DOI
- 10.1021/acssuschemeng.1c05304
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2021 American Chemical Society.
- id
- 4a47d142-895f-4f9c-8e0a-66cae14aead6
- date added to LUP
- 2022-07-12 15:34:02
- date last changed
- 2024-07-09 14:15:18
@article{4a47d142-895f-4f9c-8e0a-66cae14aead6,
abstract = {{<p>The continuous fabrication via membrane emulsification of stable microcapsules using renewable, biodegradable biopolymer wall materials keratin and chitosan is reported here for the first time. Microcapsule formation was based on opposite charge interactions between keratin and chitosan, which formed polyelectrolyte complexes when solutions were mixed at pH 5.5. Interfacial complexation was induced by transfer of keratin-stabilized primary emulsion droplets to chitosan solution, where the deposition of chitosan around droplets formed a core-shell structure. Capsule formation was demonstrated both in batch and continuous systems, with the latter showing a productivity up to 4.5 million capsules per minute. Keratin-chitosan microcapsules (in the 30-120 μm range) released less encapsulated nile red than the keratin-only emulsion, whereas microcapsules cross-linked with glutaraldehyde were stable for at least 6 months, and a greater amount of cross-linker was associated with enhanced dye release under the application of force due to increased shell brittleness. In light of recent bans involving microplastics in cosmetics, applications may be found in skin-pH formulas for the protection of oils or oil-soluble compounds, with a possible mechanical rupture release mechanism (e.g., rubbing on skin). </p>}},
author = {{Wilson, Amy and Ekanem, Ekanem E. and Mattia, Davide and Edler, Karen J. and Scott, Janet L.}},
issn = {{2168-0485}},
keywords = {{biopolymer; chitosan; coacervation; keratin; layer-by-layer; membrane emulsification; microencapsulation; polyelectrolyte complex}},
language = {{eng}},
month = {{12}},
number = {{49}},
pages = {{16617--16626}},
publisher = {{The American Chemical Society (ACS)}},
series = {{ACS Sustainable Chemistry and Engineering}},
title = {{Keratin-Chitosan Microcapsules via Membrane Emulsification and Interfacial Complexation}},
url = {{http://dx.doi.org/10.1021/acssuschemeng.1c05304}},
doi = {{10.1021/acssuschemeng.1c05304}},
volume = {{9}},
year = {{2021}},
}