Berberis aristata Stem Powder
DEFINITION
The article consists of the dried stem of Berberis aristatal DC. (Family Berberidaceae), reduced to powder or very fine powder. It contains NLT 1.0% of berberine on the dried basis.
POTENTIAL CONFOUNDING MATERIALS
Berberis asiatica
Berberis lyceum
Coscinium fenestratum
Hydrastis canadensis
CONSTITUENTS OF INTEREST
Benzoisoquinoline alkaloid: Berberine, palmatine
IDENTIFICATION
• A. Botanical Characteristics
Macroscopic: Yellow to dark brown powder
Microscopic: Yellow; shows mostly fragments of cork cells, sieve elements, yellow...