chlorophyll-a has been researched along with norflurane* in 1 studies
1 other study(ies) available for chlorophyll-a and norflurane
| Article | Year |
|---|---|
Optimization of subcritical fluid extraction of carotenoids and chlorophyll a from Laminaria japonica Aresch by response surface methodology.
The carotenoids and chlorophyll a of Laminaria japonica Aresch were extracted using ethanol-modified subcritical 1,1,1,2-tetrafluoroethane (R134a). In the present study, the effects of pressure (5-17 MPa), temperature (303-333 K) and the amount of cosolvent(2-6% R134a, w/w)were investigated. Response surface methodology (RSM) combined with a Box-Behnken design was applied to evaluate the significance of the three independent variables on each response. A desirability function was conducted to simultaneously optimize the multiple responses.. The optimum extraction conditions were as follows: extraction temperature 324.13 K, extraction pressure 17 MPa and a cosolvent amount of 4.73%. Under these conditions, the yields of carotenoids and chlorophyll a were predicted to be 0.239 and 2.326 g kg(-1), respectively.. It has been proved that subcritical R134a is a potential solvent, which can be an alternative to supercritical CO2 for extraction of natural ingredients under mild conditions. Topics: Carotenoids; Chlorophyll; Chlorophyll A; Chromatography, High Pressure Liquid; Chromatography, Supercritical Fluid; Ethanol; Hydrocarbons, Fluorinated; Laminaria; Pressure; Solvents; Temperature | 2014 |