Ten milliliters of strawberry juice was mixed with 20 mL of HCl (0.1%) in methanol, then after standing for 1 h at 4 °C, the mixture was centrifuged at 5157×g for 10 min at 4 °C, and lastly, the supernatant was collected for further analysis
Ten milliliters of strawberry juice was mixed with 20 mL of HCl(0.1%) in methanol, then after standing for 1 h at 4 °C, the mixture wascentrifuged at 5157×g for 10 min at 4 °C, and lastly, the supernatantwas collected for further analysis