Spent coffee extracts were diluted 3:10 in demineralized water prior to analysis. Samples (50 μL) were added to 1.95 mL of the DPPH• solution. After mixing,
Spent coffee extracts were diluted 3:10 in demineralizedwater prior to analysis. Samples (50 μL) were added to 1.95 mL of theDPPH• solution. After mixing,