coptis chinensis franch canker root

1, sensory requirements.

Uniform: dry, solid, with a pile at the top, with a yellowish-brown or yellow-brown surface, with a yellow or orange-yellow section, no charred, mildew, and moth; branches: single, dry, bodyless, without hair, No pruning bridge, branch length 3cm above, diameter 0.3cm above, no coke black, mildew, insects.

2, physical and chemical indicators:

Berberine to berberine hydrochloride (C20H17N04.HC1): EC goods ≥ 5%, branches connected ≥ 7%; safe moisture: ≤ 14%; total ash: ≤ 5%; impurities: ≤ 1%; mercury ≤ 0.2mg /kg; Cadmium ≤ 0.3mg/kg; Lead ≤ 5.0mg/kg; Arsenic ≤ 2.0mg/kg.