Characterization of black pepper essential oil nanoemulsion fabricated by emulsion phase inversion method

2021 ◽  
Author(s):  
Ly Thi Minh Hien ◽  
Ta Dang Khoa ◽  
Dong Thi Anh Dao
Keyword(s):  
Essential Oil ◽  
Phase Inversion ◽  
Black Pepper ◽  
Inversion Method ◽  
Emulsion Phase ◽  
Phase Inversion Method

scholarly journals Formulation, characterization and stability of o/w nanoemulsion containing rice bran oil prepared by emulsion phase inversion

Food Research ◽  
2020 ◽  
Vol 4 (4) ◽  
pp. 1025-1029
Author(s):  
Y.P. Sari ◽  
S. Raharjo ◽  
U. Santoso ◽  
Supriyadi
Keyword(s):  
Rice Bran ◽  
Phase Inversion ◽  
Rice Bran Oil ◽  
Coconut Oil ◽  
Tween 80 ◽  
Polydispersity Index ◽  
Inversion Method ◽  
Emulsion Phase ◽  
Naturally Occurring ◽  
Phase Inversion Method

Rice bran oil (RBO) contains naturally occurring antioxidants such as carotenoids, tocopherol, and γ-oryzanol. The aim of this research was to formulate and evaluate the characteristics of nanoemulsion which was prepared using RBO containing naturally occurring antioxidants. The RBO-in-water nanoemulsion was prepared by the emulsion phase inversion method. The oil phase of the nanoemulsion was prepared by either virgin coconut oil (VCO) or palm oil (PO) combined with RBO with the ratio of 5:5; 4:6, 3:7, 2:8 and 0:10. Tween 80 was used as a surfactant. The surfactant to oil ratios was predetermined at 2.5:1.0 and 3.0:1.0. The aqueous phase (80% w/w) was titrated into an organic phase that consisted of Tween 80 and oil phase (approximately 20% w/w). Droplet size, zeta-potential and polydispersity index of the nanoemulsion were used as the main parameters. The results showed that the smallest droplet (<100 nm) of the nanoemulsion was obtained when the ratio of VCO: RBO at 3:7 and the ratio of PO: RBO at 4:6 with the surfactant to oil ratio (SOR) was 2.5. Nanoemulsion with a relatively small polydispersity index of 0.3 was achieved when the ratio of PO: RBO was 3:7 and SOR at 3. All of the freshly prepared RBO containing nanoemulsion have good stability with zetapotential values of < -30 mV. Nanoemulsions were stable against centrifugation at 2300 rpm for 15 mins, but they were not stable against heating at 105°C for 5 hrs. The RBO-inwater nanoemulsion could be successfully prepared by phase inversion method, by combining RBO with either VCO or PO at different ratios.

Synthesis and Characterization of Polysulfone/Montmorillonite (PSF/MMT) Mixed Matrix Membrane for Gas Separation

2014 ◽  
Vol 925 ◽  
pp. 18-22 ◽  
Author(s):  
P.C. Oh ◽  
N.A. Mansur
Keyword(s):  
Phase Inversion ◽  
Deionized Water ◽  
Mixed Matrix Membranes ◽  
Mixed Matrix Membrane ◽  
Inversion Method ◽  
Mixed Matrix ◽  
Flat Sheet ◽  
Wet Phase Inversion ◽  
Phase Inversion Method

In this paper, flat sheet polysulfone (PSF) membrane and polysulfone/montmorillonite (PSF/MMT) mixed matrix membranes with different MMT contents were prepared by dry-wet phase inversion method.N-methyl-2-pyrrolidone (NMP) and deionized water were used as a solvent and coagulant, respectively. The morphology and structure of membranes were analyzed by scanning electron microscope. Thermogravimetric analysis was also performed to examine the thermal decomposition of the synthesized membrane. Results showed that MMT had a good dispersion in the PSF matrix.

scholarly journals Elaboration and characterization of multilayer polymeric membranes: effect of the chemical nature of polymers

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Youcef Sedkaoui ◽  
Naima Abdellaoui ◽  
Omar Arous ◽  
Hakim Lounici ◽  
Noreddine Nasrallah ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Chemical Nature ◽  
Cellulose Triacetate ◽  
Polymeric Membranes ◽  
Polymeric Membrane ◽  
Inversion Method ◽  
Ion Separation ◽  
Phase Inversion Method ◽  
Pvc Membranes

AbstractThe transport phenomena across polymeric membrane may be enhanced by applying various strengths inside or outside the system. Recently, polymer inclusion membrane (PIM) has been considered one of the most popular methods that acts as a sink for the contaminant and immobilizes it. In the literature, there is no report about how to achieve the synthesis of multi-layer PIMs. In this paper, an improvement of a novel category of membrane without carrier for performing ion separation is reported. Different membranes were elaborated from binary mixtures of polymers, cellulose triacetate (CTA), polymethyl methacrylate (PMMA) and polyvinyl chloride (PVC) using 2-nitrophenyl octyle-ether (NPOE) as plasticizer and carrier in the same time, in order to increase specific interactions between the different polymers. The membranes (Polymer 1– NPOE – Polymer 2) were synthesized by phase inversion method modified by changing the procedure of a plasticizer/carrier addition and characterized by FTIR, TGA, SEM, zeta potential and contact angle. The CTA-based membranes exhibited well-defined pores partially filled with the second polymer and NPOE. Overall, our results showed that the addition of NPOE resulted in homogeneous membranes with modified physical properties, such as thickness, and hydrophobicity. A study of transport of Pb(II) using the synthesized membranes was studied. Dialysis experiments of lead ions across a polymeric membrane have shown that (CTA + NPOE + PMMA) and (PMMA + NPOE + PVC) membranes proved a good performance in one stage by fixing 12.15 and 25.31% of lead, respectively, without any additionally added carrier and acids. These results confirm the affinity between a basic polymer (poly-methyl methacrylate) and the metallic ion (Pb2+).

Preparation and Characterization of Antimicrobial PES Ultra-Filtration Membrane Modified with Capsaicin

2011 ◽  
Vol 356-360 ◽  
pp. 2338-2343 ◽  
Author(s):  
Han Min Wang ◽  
Xue Li Gao ◽  
Bao Wei Su ◽  
Cong Jie Gao
Keyword(s):  
Phase Inversion ◽  
Antibacterial Property ◽  
Inversion Method ◽  
Polyethylene Glycol 400 ◽  
Membrane Performance ◽  
Filtration Membrane ◽  
Membrane Flux ◽  
Ultra Filtration ◽  
Phase Inversion Method

The polyethersulfone ultra-filtration membrane was prepared by phase inversion method using polyethersulfone(PES), polyethylene glycol 400(PEG400) and N，N- dimethylamide(DMAC) as materials, and was modified by adding a capsaicin monomer named MBHBA which possess antibacterial property. The effects of MBHBA content on the ultra-filtration membrane performance were discussed. The results showed that the addition of MBHBA monomer effectively increased the membrane flux. And the modified membrane had strong inhibitory activity against Escherichia coli.

A straight, open and macro-porous fuel electrode-supported protonic ceramic electrochemical cell

2021 ◽  
Author(s):  
Yuxin Pan ◽  
Kai Pei ◽  
Yucun Zhou ◽  
Tong Liu ◽  
Meilin Liu ◽  
...  
Keyword(s):  
Phase Inversion ◽  
Electrochemical Cell ◽  
Inversion Method ◽  
Phase Inversion Method

A straight, open and macro-porous Ni–BaZr0.1Ce0.7Y0.1Yb0.1O3 fuel electrode-supported protonic ceramic electrochemical cell has been fabricated by a modified phase-inversion method.

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