Journal
CARBOHYDRATE POLYMERS
Volume 291, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2022.119566
Keywords
Chitosan nanogels; Pickering emulsion; Walnut oil; Rheological properties; Fatty acid
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Funding
- Universiti Malaysia Terengganu [UMT/CRIM/2-2/2/23 (23), Vot 55302]
- Ministry of Higher Education, Malaysia, under the Higher Institution Centre of Excellence (HICoE) , Institute of Tropical Aquaculture and Fisheries (AKUATROP) program [56051, UMT/CRIM/2-2/5 Jilid 2 (10), 56052, UMT/CRIM/2-2/5 Jilid 2 (11)]
- Program for Innovative Research Team (in Science and Technology) in the University of Henan Province [21IRTSTHN020]
- Central Plain Scholar Funding Project of Henan Province [212101510005]
- MoU between Scotland's Rural College (SRUC)
- Universiti Malaysia Terengganu (UMT)
- Shahrood University of Tech-nology
- University of Tehran
- Biofuel Research Team (BRTeam)
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The effect of different fatty acid types on the emulsifying properties of chitosan-based particles was investigated. The study found that longer fatty acids in chitosan led to better formation of chitosan nanogels and improved stability of emulsions.
The effect of fatty acid type bonded to chitosan on the emulsifying properties of chitosan-based particles was investigated. Capric acid, myristic acid, and stearic acid were attached to chitosan chains. Longer fatty acids in the structure of chitosan lead to the better and more uniform formation of chitosan nanogels. The contact angle of chitosan, chitosan-capric acid, chitosan-myristic acid and chitosan-stearic acid were found to be 52.5 degrees, 60.0 degrees, 65.1 degrees and 72.5 degrees, respectively. Different chitosan nanogels were used to stabilize walnut oil emulsions, and the emulsion stabilized with chitosan-stearic acid nanogels had the lowest creaming index (15.2%). Stabilized emulsions with chitosans attached to longer chain acids were more adapted to the mechanism of Pickering emulsions, in addition to having higher viscosity as well as more gel-like behavior. In general, this study showed that emulsifying properties of chitosan could be improved by increasing the number of fatty acid carbons bonded to chitosan.
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