The Scientific World Journal / 2014 / Article / Tab 1

Research Article

Optimization of Reflux Conditions for Total Flavonoid and Total Phenolic Extraction and Enhanced Antioxidant Capacity in Pandan (Pandanus amaryllifolius Roxb.) Using Response Surface Methodology

Table 1

Independent variables and their coded and actual values used for optimization.

Independent variableCoded level
UnitSymbol−10+1Axial (−α)Axial (+α)

MC% 10.525089.482080
ET °C 23.685076.323070
LS ratio% 16.843043.162040

MC: methanol concentration; ET: extraction temperature; LS ratio: liquid to solid ratio.