- Title
- Design, Optimization, Manufacture and Characterization of Efavirenz-Loaded Flaxseed Oil Nanoemulsions
- Creator
- Mazonde, Priveledge
- Creator
- Khamanga, Sandile M
- Creator
- Walker, Roderick B
- Subject
- To be catalogued
- Date Issued
- 2020
- Date
- 2020
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/183183
- Identifier
- vital:43919
- Identifier
- xlink:href="https://doi.org/10.3390/pharmaceutics12090797"
- Description
- The formation, manufacture and characterization of low energy water-in-oil (w/o) nanoemulsions prepared using cold pressed flaxseed oil containing efavirenz was investigated. Pseudo-ternary phase diagrams were constructed to identify the nanoemulsion region(s). Other potential lipid-based drug delivery phases containing flaxseed oil with 1:1 m/m surfactant mixture of Tween® 80, Span® 20 and different amounts of ethanol were tested to characterize the impact of surfactant mixture on emulsion formation. Flaxseed oil was used as the oil phase as efavirenz exhibited high solubility in the vehicle when compared to other vegetable oils tested. Optimization of surfactant mixtures was undertaken using design of experiments, specifically a D-optimal design with the flaxseed oil content set at 10% m/m. Two solutions from the desired optimization function were produced based on desirability and five nanoemulsion formulations were produced and characterized in terms of in vitro release of efavirenz, physical and chemical stability. Metastable nanoemulsions containing 10% m/m flaxseed oil were successfully manufactured and significant isotropic gel (semisolid) and o/w emulsions were observed during phase behavior studies. Droplet sizes ranged between 156 and 225 nm, zeta potential between −24 and −41 mV and all formulations were found to be monodisperse with polydispersity indices ≤ 0.487.
- Format
- computer
- Format
- online resource
- Format
- application/pdf
- Format
- 1 online resource (22 pages)
- Format
- Publisher
- MDPI
- Language
- English
- Relation
- Pharmaceutics
- Relation
- Mazonde, P., Khamanga, S.M. and Walker, R.B., 2020. Design, Optimization, Manufacture and Characterization of Efavirenz-Loaded Flaxseed Oil Nanoemulsions. Pharmaceutics, 12(9), p.797
- Relation
- Pharmaceutics volume 12 number 9 p. 797 2020 1999-4923
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the MDPI Open Access Statement (https://www.int-res.com/journals/terms-of-use/)
- Rights
- Open Access
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Collections
Walker, Roderick Bryan (Prof)
RU Department of Pharmacy
Khamanga, Sandile S M (Assoc Prof)
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Design, Optimization, Manufacture and Characterization of Efavirenz-Loaded Flaxseed Oil Nanoemulsions.pdf | 3 MB | Adobe Acrobat PDF | View Details Download |