Temperature effects on diffusion coefficient for 6-gingerol and 6-shogaol in subcritical water extraction
[摘要] 6-gingerol and 6-shogaol are the main constituents as anti-inflammatory or bioactive compounds from zingiber officinale Roscoe. These bioactive compounds have been proven for inflammatory disease, antioxidatives and anticancer. The effect of temperature on diffusion coefficient for 6-gingerol and 6-shogaol were studied in subcritical water extraction. The diffusion coefficient was determined by Fick's second law. By neglecting external mass transfer and solid particle in spherical form, a linear portion of Ln (1-(Ct/Co)) versus time was plotted in determining the diffusion coefficient. 6-gingerol obtained the higher yield at 130°C with diffusion coefficient of 8.582x10-11m2/s whilst for 6-shogaol, the higher yield and diffusion coefficient at 170°C and 19.417 × 10-11m2/s.
[发布日期] [发布机构] Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 54000 Kuala Lumpur, Malaysia^1;Center of Lipids Engineering and Applied Research (CLEAR), Universiti Teknologi Malaysia, 54000 Kuala Lumpur, Malaysia^2;Department of Chemical Systems and Engineering, Kyushu University, Fukuoka 812-8581, Japan^3
[效力级别] 化学 [学科分类]
[关键词] Anti-inflammatories;Bioactive compounds;Effect of temperature;External mass transfer;Fick's second law;Inflammatory disease;Subcritical water extraction;Zingiber officinale [时效性]
