Fig. 1
The color changes of daiokanzoto decoction solutions using the conventional and IPCD methods
A: rhubarb-alone, B: glycyrrhiza-alone, C: daiokanzoto
Left graphs: Commission Internationale de L’éclairage (CIE) L*a*b* color parameters of the supernatant samples (mean ± SEM, n = 4)
Right photos: Upper: supernatant (after centrifugation); Lower: suspension (before centrifugation)