If I have a aqueous solution with 1 g of my plant and 50 mL of water ([] 2% or 20 mg/mL) how can I compare with a hydroalcoholic solution with 20 g of the plant + 200 mL of ethanol 70% ([] 10% or 100 mg/mL)?
Oxidation with
Folin-Ciocalteau
Calibration curve with gallic acid
Line equation: y = 0.0015x + 0.0052
R² = 0.9954
Dilution factor: 5.34