Picrorhiza kurrooa Root and Rhizome Powder

Picrorhiza kurrooa Root and Rhizome Powder


DEFINITION

The article consists of the dried root and rhizome of Picrorhiza kurrooa Royle (Family Plantaginaceae), reduced to powder or very fine powder. It contains NLT 3.5% of iridoid glycosides calculated as the sum of picroside I and picroside II on the anhydrous basis.

 

POTENTIAL CONFOUNDING MATERIALS

Picrorhiza scrophulariiflora Pennell

 

CONSTITUENTS OF INTEREST

Iridoid glycosides: Picroside I and picroside II

 

IDENTIFICATION

• A. Botanical Characteristics

Dusty-grey; shows group of fragments of cork cells, thick walled, parenchyma, pitted vessels and aseptate fibers, simple round to oval, starch grains, measuring 25–104 μm in diameter

• B. Thin-Layer Chromatography

Standard solution A: 0.5 mg/mL of USP Picroside I RS in...