Nanoemulsions produced with varied type of emulsifier and oil content: An influence of formulation and process parameters on the characteristics and physical stability
| Autor: | D Snezana Savic, D Nebojsa Cekic, L Miodrag Lazic, R Jela Milic, M Sanela Djordjevic, M Tanja Isailovic, M Gordana Vuleta |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
food.ingredient
Materials science General Chemical Engineering Dispersity Analytical chemistry nanoemulsion high pressure homogenization General Chemistry caprylyl/capryl glucoside lcsh:Chemical technology Lecithin Homogenization (chemistry) physical stability food lecithin Pulmonary surfactant Dynamic light scattering Zeta potential polysorbate 80 lcsh:TP1-1185 Surface charge Particle size |
| Zdroj: | Hemijska Industrija, Vol 67, Iss 5, Pp 795-809 (2013) |
| ISSN: | 2217-7426 |
| Popis: | The aim of the present study was to prepare oil-in-water nanoemulsions stabilized with a novel natural alkyl polyglucoside surfactant and to compare them with corresponding lecithin/polysorbate 80 - based nanoemulsions in terms of physicochemical properties and physical stability. Nanoemulsions were prepared by high pressure homogenization, using 20, 30 and 40% (w/w) medium chain triglyceride as oil phase, and 4, 6 and 8% (w/w) lecithin/polysorbate 80 mixture (1/1) or caprylyl/capryl glucoside as emulsifiers. The influence of emulsifier type, emulsifier concentration and oil content was investigated with respect to changes in particle size, particle size distribution, surface charge and physical stability. The influence of production parameters (number of homogenization cycles, type of homogenization process, homogenization pressure) on particle size was also investigated. Analysis was performed by photon correlation spectroscopy, laser diffraction, zeta potential, pH and electrical conductivity measurements. All formulations produced revealed a small droplet size ranging from 147 to 228 nm and a very narrow size distribution (polydispersity index range 0,072-0,124). Zeta potentials were about -20 mV and -50 mV for nanoemulsions stabilized with lecithin/polysorbate 80 and caprylyl/capryl glucoside, respectively. The results obtained during the stability studies (6 months at 25°C and 1 month at 40°C) indicated that nanoemulsion stability was influenced by their composition. Acquired results also suggested the most appropriate production parameters: 9 homogenization cycles, homogenization pressure of 500 bar and discontinuous process of homogenization. |
| Databáze: | OpenAIRE |
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