Polygonum cuspidatum Sieb.et Zucc.

Detailed Product Description

Description:      Perennial fructose herbage plant, the hollow stem is height of 1.5~2m in average, and with red or fuchasia spot on the surface. The leaves are broad oval with a truncated base, 7~14cm long and 5~12cm broad, with an entire margin. The panicle is axillary, and the dioecious flower has 5 calyxes, comb shaped style; the achene is oval shaped with 3 edges. Florescence is from June to July, and the fruit period is from September to October.

              

Traditional Usage: The roots of Polygonum cuspidatum are used in traditional Chinese herbal medicines as a natural laxative. The active principle responsible for the laxative effect is emodin, present in its natural form as a complex of its analogs.

SPECIFICATIONS

Appearance		White fine powder
Identification		Consistent with standard
Assay (Resveratrol, by HPLC)		≥25%	≥50%	≥98%
Sieve		100% pass 80 mesh
Bulk density		45-55g/100ml
Loss weight on drying		≤5.0%
Ash		≤3.0%
Arsenic(As)		≤1.0mg/kg
Lead(Pb)		≤1.0mg/kg
Residual solvents	Ethanol	≤5000mg/kg
	Ethyl acetate	≤3000mg/kg
Total Aerobic plate count		<1000cfu/g
Yeast & mould		<100cuf/g
E.Coli		Negative/g

Storage condition	Cool & dry place. Do not freeze. Keep away from strong light and heat.
Shelf life	2 years when properly stored.