Molecular dynamics simulation for self-diffusion coefficients of ginger bioactive compounds in subcritical water with and without ethanol
Molecular dynamics simulation was used to calculate the self-diffusion coefficients of ginger bioactive compounds (6-gingerol and 6-shogaol) in subcritical water with the presence of ethanol as an entrainer (0-10mol%) at temperatures from 373.15 to 453.15K. The all-atom optimised-potentials (OPLS/AA...
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| Main Authors: | , , , |
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| Format: | Article |
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Elsevier B.V.
2016
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/71634/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945481044&doi=10.1016%2fj.fluid.2015.06.018&partnerID=40&md5=500c7d5fc134d861268b30274d1f3076 |
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| Summary: | Molecular dynamics simulation was used to calculate the self-diffusion coefficients of ginger bioactive compounds (6-gingerol and 6-shogaol) in subcritical water with the presence of ethanol as an entrainer (0-10mol%) at temperatures from 373.15 to 453.15K. The all-atom optimised-potentials (OPLS/AA) were employed for the ginger bioactive compounds and ethanol. The extended simple point charge (SPC/E) model was adopted for water molecules. The self-diffusion coefficients increase from 1.00×10-9to 2.70×10-9m2/s with increasing temperature from 353.15 to 453.15K. The self-diffusion coefficients also increase from 1.71×10-9to 3.00×10-9m2/s with increasing percentage of ethanol from 0 to 10mol% at 413.15K. The radial distribution functions between the ginger bioactive compounds and subcritical water (solvent) illustrate a weak interaction between the ginger bioactive compounds and solvent. The interaction increases with addition of ethanol as entrainer. |
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