The rhizome samples (250 g · 3) were kept immersed in water in a plastic net and maintained at 50, 60, 70, 80, 90 and 100 C for 30 min. After heat treatment, samples were cut into small pieces and ground using a domestic mixer.
The rhizome samples(250 g · 3) were kept immersed in water in a plastic netand maintained at 50, 60, 70, 80, 90 and 100 C for30 min. After heat treatment, samples were cut into smallpieces and ground using a domestic mixer.