Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size
Abstract
Stirred cell membrane emulsification was used to create double water-in-oil-in-water emulsions at the dispersed phase flux of up to 3200 L m(-2) h(-1). The oil phase was unrefined pumpkin seed oil or sunflower oil containing 30% by volume of internal water phase and the external water phase was 2% Tween 20 (polyoxyethylene sorbitan monolaurate) or 2% Pluronic F-68 (polyoxyethylene-polyoxypropylen copolymer). Using microengineered nickel membranes with pore sizes between 15 and 40 mu m, median drop sizes of double emulsion droplets were in the range between 100 and 430 mu m, depending mainly on the shear at the membrane surface and dispersed phase injection rate. In most cases the drops were very uniform, with span (i.e. 90% drop size minus 10% drop size divided by median size) values of around 0.5. This data is similar to what was obtained previously for simple O/W emulsions of the same materials. Hence, the internal water phase, and internal surfactant, 5% PGPR (polyglycerol polyricin...oleate), did not adversely influence the emulsification process. A marker material, copper sulfate, was added to the internal water phase and the release of copper was monitored with respect to time. For both lipid systems, at the larger droplet size, there was a significant period of no copper release, followed by almost linear release with time. This initial period was absent when the drop size was close to 100 mu m. The initial entrapment efficiency of the copper, in all experiments, was higher than 94%. (C) 2011 Elsevier B. V. All rights reserved.
Keywords:
Membrane emulsification / Stirred cell / Pumpkin seed oil / Multiple emulsions / Encapsulation efficiencySource:
Journal of Membrane Science, 2012, 392, 122-129Funding / projects:
- Novel encapsulation and enzyme technologies for designing of new biocatalysts and biologically active compounds targeting enhancement of food quality, safety and competitiveness (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-46010)
DOI: 10.1016/j.memsci.2011.12.009
ISSN: 0376-7388; 1873-3123
WoS: 000300934400014
Scopus: 2-s2.0-84856086838
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VinčaTY - JOUR AU - Dragosavac, Marijana M. AU - Holdich, Richard G. AU - Vladisavljević, Goran T. AU - Sovilj, Milan N. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4717 AB - Stirred cell membrane emulsification was used to create double water-in-oil-in-water emulsions at the dispersed phase flux of up to 3200 L m(-2) h(-1). The oil phase was unrefined pumpkin seed oil or sunflower oil containing 30% by volume of internal water phase and the external water phase was 2% Tween 20 (polyoxyethylene sorbitan monolaurate) or 2% Pluronic F-68 (polyoxyethylene-polyoxypropylen copolymer). Using microengineered nickel membranes with pore sizes between 15 and 40 mu m, median drop sizes of double emulsion droplets were in the range between 100 and 430 mu m, depending mainly on the shear at the membrane surface and dispersed phase injection rate. In most cases the drops were very uniform, with span (i.e. 90% drop size minus 10% drop size divided by median size) values of around 0.5. This data is similar to what was obtained previously for simple O/W emulsions of the same materials. Hence, the internal water phase, and internal surfactant, 5% PGPR (polyglycerol polyricinoleate), did not adversely influence the emulsification process. A marker material, copper sulfate, was added to the internal water phase and the release of copper was monitored with respect to time. For both lipid systems, at the larger droplet size, there was a significant period of no copper release, followed by almost linear release with time. This initial period was absent when the drop size was close to 100 mu m. The initial entrapment efficiency of the copper, in all experiments, was higher than 94%. (C) 2011 Elsevier B. V. All rights reserved. T2 - Journal of Membrane Science T1 - Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size VL - 392 SP - 122 EP - 129 DO - 10.1016/j.memsci.2011.12.009 ER -
@article{ author = "Dragosavac, Marijana M. and Holdich, Richard G. and Vladisavljević, Goran T. and Sovilj, Milan N.", year = "2012", abstract = "Stirred cell membrane emulsification was used to create double water-in-oil-in-water emulsions at the dispersed phase flux of up to 3200 L m(-2) h(-1). The oil phase was unrefined pumpkin seed oil or sunflower oil containing 30% by volume of internal water phase and the external water phase was 2% Tween 20 (polyoxyethylene sorbitan monolaurate) or 2% Pluronic F-68 (polyoxyethylene-polyoxypropylen copolymer). Using microengineered nickel membranes with pore sizes between 15 and 40 mu m, median drop sizes of double emulsion droplets were in the range between 100 and 430 mu m, depending mainly on the shear at the membrane surface and dispersed phase injection rate. In most cases the drops were very uniform, with span (i.e. 90% drop size minus 10% drop size divided by median size) values of around 0.5. This data is similar to what was obtained previously for simple O/W emulsions of the same materials. Hence, the internal water phase, and internal surfactant, 5% PGPR (polyglycerol polyricinoleate), did not adversely influence the emulsification process. A marker material, copper sulfate, was added to the internal water phase and the release of copper was monitored with respect to time. For both lipid systems, at the larger droplet size, there was a significant period of no copper release, followed by almost linear release with time. This initial period was absent when the drop size was close to 100 mu m. The initial entrapment efficiency of the copper, in all experiments, was higher than 94%. (C) 2011 Elsevier B. V. All rights reserved.", journal = "Journal of Membrane Science", title = "Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size", volume = "392", pages = "122-129", doi = "10.1016/j.memsci.2011.12.009" }
Dragosavac, M. M., Holdich, R. G., Vladisavljević, G. T.,& Sovilj, M. N.. (2012). Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size. in Journal of Membrane Science, 392, 122-129. https://doi.org/10.1016/j.memsci.2011.12.009
Dragosavac MM, Holdich RG, Vladisavljević GT, Sovilj MN. Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size. in Journal of Membrane Science. 2012;392:122-129. doi:10.1016/j.memsci.2011.12.009 .
Dragosavac, Marijana M., Holdich, Richard G., Vladisavljević, Goran T., Sovilj, Milan N., "Stirred cell membrane emulsification for multiple emulsions containing unrefined pumpkin seed oil with uniform droplet size" in Journal of Membrane Science, 392 (2012):122-129, https://doi.org/10.1016/j.memsci.2011.12.009 . .