Anthraquinone (aq) 1 Aromatic Compounds 1 Aromatic compounds 1 Central composite designs 1 Empty fruit bunch (EFB) 1 Folding endurance 1 Fruits 1 Ketones 1 Luminance 1 Mechanical paper properties 1 Oil palm empty fruit bunch 1 Opacity 1 Optical paper properties 1 Palm oil 1 Pulping conditions Pulping temperature 1 Regression Analysis 1 Regression analysis 1 Response surface methodology 1 Response surface methodology (RSM) 1 Soda-AQ pulping 1 Sodium Hydroxide 1 Sodium hydroxide 1 Tensile strength 1 Wood preservation 1 Zero-span tensile strength 1