scholarly journals Self-assembly of Palm Kernel Oil Wax Esters in Aqueous Media: A Molecular Dynamics Study

2015 ◽  
Vol 7 (1) ◽  
pp. 133 ◽  
Author(s):  
Roghayeh Abedi Karjiban ◽  
Qiu-Yi Huan ◽  
Mohd Basyaruddin Abdul Rahman ◽  
Mahiran Basri ◽  
Bimo Ario Tejo

<p>Experimentally determined phase diagram of palm kernel oil-based wax esters (PKOEs) nano-emulsion was selected to explore an atomic insight into the self-assembly of PKOEs nano-emulsion using molecular dynamics (MD) simulation technique. A model system including PKOEs molecules and nonionic Tween80 surfactant in aqueous solution was prepared. We used MD to explore a detail atomic insight into the self-assembly process of and the shape of the micelle formed. MD simulation was performed for 20 ns. MD results involving the radius of gyration, the solvent accessible surface areas, the number of clusters formed, and the moment of inertia analysis revealed that the model prepared showed a stable prolate ellipsoid shape. <strong> </strong></p><p> </p>

2019 ◽  
Vol 10 ◽  
Author(s):  
Nur Hana Faujan ◽  
Mohd Basyaruddin Abdul Rahman ◽  
Mahiran Basri ◽  
Roghayeh Abedi Karjiban

2010 ◽  
Vol 8 (3) ◽  
pp. 356-362 ◽  
Author(s):  
Erin Ryantin Gunawan ◽  
Dedy Suhendra

The lipase synthesis of wax esters using palm oil fractions (palm oil and palm kernel oil) and long chain alcohol as substrates was carried out. The present work focuses on the synthesis of wax esters using Lipozyme. Five parameters such as reaction time, temperature, amount of enzyme, molar ratio of substrates and various organic solvents of the reaction system were investigated. The optimum yields were achieved at the reaction temperature of 40 - 50 °C for palm oil (PO) and 40 °C for palm kernel oil (PKO) alcoholysis, a reaction time of 5 - 7 h for PO and 7 - 10 h for PKO alcoholysis, 0.15 g of enzyme for both PO and PKO alcoholysis, molar ratio at 3:1 (alcohol: PO or PKO), and the best solvent for the reactions was hexane. Percentage yields of esters obtained at these optimum reaction conditions was 83% refined, bleached and deodorized (RBD) palm oil alkoholysis and 87% for RBD palm kernel oil alcoholysis respectively   Keywords: palm oil, palm kernel oil, enzymatic, alcoholysis, wax ester, oleyl alcohol


Author(s):  
Mohd Jumain Jalil ◽  
Aliff Farhan Mohd Yamin ◽  
Mohd Saufi Md Zaini ◽  
Veronique Gloria V. Siduru ◽  
Norhashimah Morad ◽  
...  

Background: Studies pertaining to the epoxidation of fatty acids, garnered much interest in recent years due to the rising demand of eco-friendly epoxides derived from vegetable oils. Methods: Epoxide is an important chemical precursor for the production of alcohols, glycols and polymers, like polyesters and epoxy resin. Epoxidation is the name given to the reaction when the double bonds are converted into epoxide. Results: Temperature at 55oC was used as a reference material in the epoxide process, as it produces a high yield epoxide being 88%. The kinetic rate of epoxidized palm kernel oil, k was obtained to be k11= 0.5125, k12= 0.05045, k21= 0.03185, k41= 0.01 and k51= 0.01243. Conclusion: Hence, by fitting the result with the experimental work and simulation, the summation of error being stimulated by I-sight simulation was 0.731116428 and the correlation between the experimental and simulation data was 0.925544.


2021 ◽  
Author(s):  
Samuel O. Egbuna ◽  
Ukeh J. Nwachukwu ◽  
Chinedu M. Agu ◽  
Christain O. Asadu ◽  
Bernard Okolo

Soft Matter ◽  
2021 ◽  
Author(s):  
Alexander Kantardjiev

We carried out a series of coarse-grained molecular dynamics liposome-copolymer simulations with varying extent of copolymer concentration in an attempt to understand the effect of copolymer structure and concentration on vesicle self-assembly and stability.


Author(s):  
Łukasz Piotr Baran ◽  
Wojciech Rżysko ◽  
Dariusz Tarasewicz

In this study we have performed extensive coarse-grained molecular dynamics simulations of the self-assembly of tetra-substituted molecules. We have found that such molecules are able to form a variety of...


Sign in / Sign up

Export Citation Format

Share Document