Publication
Preparation of chitosan/gum Arabic nanoparticles and their use as novel stabilizers in oil/water Pickering emulsions
| dc.contributor.author | Sharkawy, Asma | |
| dc.contributor.author | Barreiro, M.F. | |
| dc.contributor.author | Rodrigues, Alírio | |
| dc.date.accessioned | 2018-02-19T10:00:00Z | |
| dc.date.accessioned | 2020-01-03T18:01:52Z | |
| dc.date.available | 2018-01-19T10:00:00Z | |
| dc.date.available | 2020-01-03T18:01:52Z | |
| dc.date.issued | 2019 | |
| dc.description.abstract | Recently, there has been a renewed interest in Pickering emulsions owing to their surfactant-free nature, and the use of natural-based particles as stabilizers became a priority due to the applications they can enable. In this work, chitosan/gum Arabic (CH/GA) nanoparticles were synthesized and tested as novel stabilizers. Among the tested CH/GA weight ratios, the particles prepared using 1:1 ratio exhibited near-neutral wettability, an average size of 108.6 nm and a zeta potential of 56.3 mv. Pickering emulsions prepared from these particle dispersions (1.5% w/v), and high oil volume fractions (φ=0.6, 0.7), have shown high storage stability. Moreover, confocal laser scanning microscopy confirmed the o/w type and the effective adsorption of the nanoparticles at the oil/ water interface forming a barrier against droplets coalescence. The emulsions have shown shear-thinning and elastic-like behavior. These findings open new avenues for using these emulsions as novel delivery systems, e.g. in cosmetic and food applications. | |
| dc.description.sponsorship | This work was supported by Associate Laboratory LSRE-LCM - UID / EQU / 50020/2019 - funded by national funds through FCT / MCTES (PIDDAC), and Foundation for Science and Technology (FCT, Portugal); and CIMO (UID/AGR/00690/2019) through FEDER under Program PT2020. The authors acknowledge the technical support provided by the i3s, University of Porto. Asma Sharkawy gratefully acknowledges financial support from the FCT doctoral grant (PD/BD/135085/2017). | |
| dc.description.version | info:eu-repo/semantics/publishedVersion | en_EN |
| dc.identifier.citation | Sharkawy, Asma; Barreiro, Maria Filomena; Rodrigues, Alírio Egídio (2019). Preparation of chitosan/gum Arabic nanoparticles and their use as novel stabilizers in oil/water Pickering emulsions. Carbohydrate Polymers. ISSN 0144-8617. 224, p. 1-9 | en_EN |
| dc.identifier.doi | 10.1016/j.carbpol.2019.115190 | en_EN |
| dc.identifier.issn | 0144-8617 | |
| dc.identifier.uri | http://hdl.handle.net/10198/7572 | |
| dc.language.iso | eng | |
| dc.peerreviewed | yes | en_EN |
| dc.subject | Chitosan/gum Arabic nanoparticles | en_EN |
| dc.subject | Nanoparticles wettability | en_EN |
| dc.subject | Pickering emulsions | en_EN |
| dc.subject | Rheological properties | en_EN |
| dc.subject | Surfactant-free emulsions | en_EN |
| dc.title | Preparation of chitosan/gum Arabic nanoparticles and their use as novel stabilizers in oil/water Pickering emulsions | en_EN |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Barreiro | |
| person.givenName | Filomena | |
| person.identifier.ciencia-id | 3418-47D5-5746 | |
| person.identifier.orcid | 0000-0002-6844-333X | |
| person.identifier.rid | L-9802-2014 | |
| person.identifier.scopus-author-id | 57188719717 | |
| rcaap.rights | openAccess | en_EN |
| rcaap.type | article | en_EN |
| relation.isAuthorOfPublication | 0391987c-ba90-488b-839a-153447ce1f0f | |
| relation.isAuthorOfPublication.latestForDiscovery | 0391987c-ba90-488b-839a-153447ce1f0f |