Figure 3

Appearance of Gentianae macrophyllae radix with different processing and their powder. (A) Gentianae macrophyllae radix with different processing, (B) Powder. a1 Oven drying after sweating treatment; a2 Drying in the sun after sweating treatment; a3 Drying in shade after sweating treatment; b1 Oven drying directly; b2 Drying in the sun directly; b3 Drying in shade directly; c Slice oven drying.