Fluorescence was measured (excitation wavelength of 485 nm and emission
wavelength of 520 nm) with a FLUOstar galaxy fluorescence plate
reader (BMGLabtechnologies,Offenburg,Germany) at 37 Cevery5min
for 1 h. Final CAA values were calculated using the CAA unit at each
concentration of quercetin and extract and expressed as μmol of quercetin
equivalents per g of extract.