In contrast, the volumes of the filter coffee fractions increased from F1 (76–80 mL) up to F3 (160–186 mL) and then decreased to F5 (26–54 mL), showing an inverted U-shape profile.
In contrast, the volumes of the filter coffee fractions increased from F1 (76–80 mL) up to F3 (160–186 mL) and then decreased to F5 (26–54 mL), showing an inverted U-shape profile.