Polygonum multiflorum Root Dry Extract

DEFINITION

The article is prepared from the dried root of Polygonum multiflorum Thunb. with the currently accepted Latin name Reynoutria multiflora (Thunb.) Moldenke (Family Polygonaceae)¹, collected in autumn or winter, by extraction with a mixture of alcohol and water (7:3). The ratio of starting crude plant material to Dry Extract is between 3:1 and 5:1. It contains NLT 90.0% and NMT 110.0% of the labeled amount of 2,3,5,4'-tetrahydroxystilbene-2-O-β-d-glucoside (C₂₀H₂₂O₉), on the dried basis; NLT 90.0% and NMT 110.0% of the labeled amount of total anthraquinones, calculated as the sum of emodin-8-O-β-d-glucoside...