scholarly journals Stabilizing the Oil-in-Water Emulsions Using the Mixtures of Dendrobium Officinale Polysaccharides and Gum Arabic or Propylene Glycol Alginate

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 759
Author(s):  
Bo Wang ◽  
Haiyan Tian ◽  
Dong Xiang
Keyword(s):  
Zeta Potential ◽  
Propylene Glycol ◽  
Apparent Viscosity ◽  
Physical Stability ◽  
Gum Arabic ◽  
Dendrobium Officinale ◽  
Average Particle ◽  
Interfacial Activity ◽  
Oil In Water ◽  
Propylene Glycol Alginate

Coconut oil-in-water emulsions were prepared using three polysaccharides: Dendrobium officinale polysaccharide (DOP), propylene glycol alginate (PGA), gum arabic (GA) and their polysaccharide complexes as emulsifiers. The effects of the ratio of the compounded polysaccharides on their apparent viscosity and interfacial activity were explored in this study. The average particle size, zeta potential, microstructure, rheological properties, and physical stability of the emulsions prepared with different compound-polysaccharides were studied. The results showed that mainly DOP contributed to the apparent viscosity of the compound-polysaccharide, while the interfacial activity and zeta potential were mainly influenced by PGA or GA. Emulsions prepared with compound-polysaccharides exhibited smaller average particle sizes, and microscopic observations showed smaller droplets and less droplet aggregation. In addition, the stability analysis of emulsions by a dispersion analyzer LUMiSizer showed that the emulsion prepared by compounding polysaccharides had better physical stability. Finally, all of the above experimental results showed that the emulsions prepared by PGA:DOP = 2:8 (total concentration = 1.5 wt%) and 2.0% GA + 1.5% DOP were the most stable.

Chemical and Physical Stability of Citral and Limonene in Sodium Dodecyl Sulfate−Chitosan and Gum Arabic-Stabilized Oil-in-Water Emulsions

2007 ◽  
Vol 55 (9) ◽  
pp. 3585-3591 ◽  
Author(s):  
Darinka Djordjevic ◽  
Luisito Cercaci ◽  
Jean Alamed ◽  
D. Julian McClements ◽  
Eric A. Decker
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Physical Stability ◽  
Sodium Dodecyl ◽  
Gum Arabic ◽  
Oil In Water ◽  
Dodecyl Sulfate

scholarly journals Safe Practice of Y-Site Drug Administration: The Case of Colistin and Parenteral Nutrition

Pharmaceutics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 292
Author(s):  
Maciej Stawny ◽  
Aleksandra Gostyńska ◽  
Malwina Nadolna ◽  
Anna Jelińska
Keyword(s):  
Zeta Potential ◽  
Color Change ◽  
Droplet Diameter ◽  
Physical Stability ◽  
Venous Catheter ◽  
Intermittent Hemodialysis ◽  
Inflammatory Reactions ◽  
Oil In Water ◽  
Infusion Line ◽  
Emulsion Particle

A serious problem in everyday clinical practice is the co-administration of drugs using the same infusion line. Potential complications of co-administration of incompatible drugs include precipitation in the infusion line or central venous catheter leading to its occlusion. Administration of precipitate and large lipid droplets into the venous system may lead to the embolization of capillaries and local or systemic inflammatory reactions, with the consequences of venous thrombosis, chronic venous insufficiency, and even pulmonary embolism. The co-administration of drugs must always be confirmed and clearly defined. The study aimed to determine the interaction between colistin (COL) in the dose used during intermittent hemodialysis and five different ready-to-use PN admixtures (PN) (Kabiven, Smofkabiven, Olimel N9E, Nutriflex Lipid Special, and Nutriflex Omega Special). COL-PN compatibilities were tested by comparing physicochemical properties (pH, zeta potential, lipid emulsion particle size) of COL and PN at three time points: immediately after sample preparation, after ten minutes, and after four hours. No changes in the visual inspection were observed. Both PN without COL and COL-PN samples remained white, homogeneous oil-in-water emulsions with no signs of phase separation, precipitation, or color change. There were no significant changes in pH, and the mean droplet diameter remained below the acceptance limit of 500 nm. The zeta potential and osmolality of COL-PN samples ranged from −21.4 to −7.22 mV and from 567 to 1304 mOsm/kg, respectively. The COL does not influence the physical stability of studied PN admixtures. The co-infusion of COL with Kabiven, Nutriflex Lipid Special, Olimel N9E, Nutriflex Omega Special, and Smofkabiven is possible in the dose used during intermittent hemodialysis.

Emulsifying Properties of Tremella Fuciformis: A Novel Promising Food Emulsifier

2019 ◽  
Vol 15 (3-4) ◽  
Author(s):  
Jian Zhang ◽  
Ya-Kun Zhang ◽  
Yong Liu ◽  
Jun-Hui Wang
Keyword(s):  
Zeta Potential ◽  
Droplet Size ◽  
Food Industry ◽  
Gum Arabic ◽  
Emulsifying Properties ◽  
Freeze Thaw ◽  
Tremella Fuciformis ◽  
Oil In Water ◽  
Purple Sweet Potato ◽  
Potential Test

AbstractIn this paper, the emulsifying properties of Tremella fuciformis (TFS) were assessed in comparison with lotus seed (LTS), purple sweet potato (PSPP) and gum arabic (GA) in oil-in-water (O/W) emulsions. Emulsifying properties were evaluated in terms of the emulsifying activity (EA), emulsifying stability, mean droplet size, zeta potential, shear viscosity and freeze-thaw stability of their emulsions. The results revealed that TFS exhibited excellent EA and best emulsifying stability (100 %) after 21 days at 21 °C. When exposure to 100 °C for 20 min, TFS emulsions showed reduced in droplet size, which was superior as compared to LTS, PSPP, and GA. In zeta-potential test, TFS was proved to be more suitable emulsifier as compared with LTS and GA as it had a comparatively larger magnitude. TFS emulsions showed the smallest droplet size at pH 10.0 followed by pH 3.0 and pH 6.5. Non-Newtonian shear-thinning behavior of all four samples remained same at 4.0 % concentration while the apparent viscosity of TFS was the highest among all. The cream index of 4.0 % TFS was also the highest at freeze-thaw cycles. Therefore, the TFS could be used as emulsifier and thickener in food industry.

Chemical and Physical Stability of Protein and Gum Arabic-Stabilized Oil-in-Water Emulsions Containing Limonene

2008 ◽  
Vol 73 (3) ◽  
pp. C167-C172 ◽  
Author(s):  
D. Djordjevic ◽  
L. Cercaci ◽  
J. Alamed ◽  
D.J. McClements ◽  
E.A. Decker
Keyword(s):  
Physical Stability ◽  
Gum Arabic ◽  
Oil In Water

scholarly journals Oil-in-Water Emulsions Stabilized by Ultrasonic Degraded Polysaccharide Complex

Molecules ◽  
2019 ◽  
Vol 24 (6) ◽  
pp. 1097 ◽  
Author(s):  
Yujie Li ◽  
Dong Xiang ◽  
Bo Wang ◽  
Xiaoyue Gong
Keyword(s):  
Molecular Weight ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Average Particle Size ◽  
Sem Analysis ◽  
Average Particle ◽  
Ultrasound Waves ◽  
Oil In Water ◽  
Propylene Glycol Alginate ◽  
The Stability

The effects of ultrasound on the molecular weight distribution and emulsifying properties of both xanthan gum (XG) and propylene glycol alginate (PGA) were investigated. The results showed that ultrasonic treatment at different intensities decreased the apparent viscosity and narrowed the molecular weight distribution. Higher intensity increased the effectivity of the sonochemical effect. Ultrasound degradation did not change the primary structure of the PGA-XG complex, and SEM analysis showed that the morphology of the original polysaccharide differed from that of the degraded polysaccharide fractions. The ultrasonic intensities and treatment times had a substantial influence on the stability of the polysaccharide-stabilized oil-in-water (O/W) emulsions. The O/W emulsion stabilized by the polysaccharide treated with 270 W ultrasound waves for 7 min led to the smallest average particle size (detected via fluorescence microscopy) and showed stability against aggregation in O/W emulsions.

scholarly journals Formulasi dan Karakterisasi Sediaan Nanoemulgel Serbuk Lidah Buaya (Aloe Vera L.)

2019 ◽  
Vol 16 (1) ◽  
pp. 28-37
Author(s):  
Teguh Imanto ◽  
Roseh Prasetiawan ◽  
Erindyah Retno Wikantyasning
Keyword(s):  
Particle Size ◽  
Zeta Potential ◽  
Physical Properties ◽  
Physical Stability ◽  
Aloe Vera ◽  
Tween 80 ◽  
Gelling Agent ◽  
Freeze Thaw ◽  
Particle Size Analyzer ◽  
Oil In Water

Aloe vera L. contains antiseptic saponins and anthraquinone complexes as antibacterial. This research was conducted to formulate aloe vera powder into nanoemulgel, characterize and test its physical properties, and to know the effect of gelling agent concentration (carbopol and chitosan) on nanoemulgel. Emulsion type used is oil in water (O / W) with surfactant tween 80 and co-surfactant propylene glycol. Nanoemulsion is characterized by percent of transmittance with UV-Vis spectrophotometer, also potential droplet and zeta size distribution with Particle Size Analyzer. Hydrogels consist of 4 combination formulas of carbopol 0.5%; 1%; 1.5%; 2% and 0.3% chitosan. The formula is tested for physical properties including organoleptic, pH, spreadability, adhesion, viscosity and stability with freeze thaw method. The results showed that the nanoemulsion droplet size was 65.05nm ± 13.49 with zeta potential of -0.1mV and the percent of transmittance above 98%. The result of physical properties of the four formulas shows that the different gelling agent concentration gives different physical properties of viscosity and spreadability. Overall, formula 3 has the best physical properties and physical stability compared to formula 1, 2 and 4.

scholarly journals Development of β-carotene loaded oil-in-water emulsions using the mixed biopolymer-particle-surfactant interfaces

2021 ◽  
Author(s):  
Yang Wei ◽  
Dan Zhou ◽  
Shufang Yang ◽  
Lei Dai ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Propylene Glycol ◽  
Colloidal Particles ◽  
Oil In Water ◽  
Propylene Glycol Alginate ◽  
Β Carotene

In this study, β-carotene loaded oil-in-water emulsions were stabilized by the complex interfaces composed of propylene glycol alginate (PGA), rhamnolipids (Rha), and zein colloidal particles (ZCPs). The influence of mixed...

scholarly journals New approach in process intensification based on subcritical water, as green solvent, in propolis oil in water nanoemulsion preparation

2021 ◽  
Vol 10 (1) ◽  
pp. 208-218
Author(s):  
Fatemeh Ghavidel ◽  
Afshin Javadi ◽  
Navideh Anarjan ◽  
Hoda Jafarizadeh-Malmiri
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Zeta Potential ◽  
Subcritical Water ◽  
Process Intensification ◽  
Processing Parameters ◽  
Bioactive Materials ◽  
Propolis Extract ◽  
High Antibacterial Activity ◽  
Oil In Water

Abstract Subcritical water was used to provide propolis oil in water (O/W) nanoemulsions. To monitor and detect the main bioactive compounds of the prepared propolis extract, gas chromatography demonstrated that there were 47 bioactive materials in the propolis extract, among which pinostrobin chalcone and pinocembrin were the two key components. Effectiveness of two processing parameters such as the amount of saponin (0.5–2.0 g) and propolis extract (0.1–0.6 g), on particle size, polydispersity index (PDI), zeta potential, and antioxidant activity of the provided nanoemulsions, was evaluated. Results demonstrated that more desirable propolis O/W nanoemulsion, with minimum particle size (144.06 nm) and PDI (0.286), and maximum zeta potential (−21.71 mV) and antioxidant activity (90.86%) were made using 0.50 g of saponin and 0.53 g of propolis extract. Further analysis revealed that the prepared nanoemulsion based on optimum processing conditions had spherical shaped propolis nanodroplets in the colloidal solution with turbidity and maximum broad absorption peak of 0.08 a.u. and 292 nm, respectively. The prepared nanoemulsion had high antibacterial activity against both selected bacteria strains namely, Staphylococcus aureus and Escherichia coli.

Sign in / Sign up

Export Citation Format

Share Document