Anemarrhena Rhizome
Anemarrhenae Rhizoma
Anemarrhena Rhizome is the
rhizome of Anemarrhena asphodeloides Bunge
(Liliaceae).
Description:
Rather flat and cord-like
rhizome, 3 . 15 cm in length, 0.5 . 1.5 cm in diameter, slightly bent and
branched; externally yellow-brown to brown; on the upper surface, a longitudinal
furrow and hair-like remains or scars of leaf sheath forming fine ring-nodes;
on the lower surface, scars of root appearing as numerous round spot-like
hollows; light and easily broken. Under a magnifying glass, a light yellow-brown
transverse section reveals an extremely narrow cortex; stele porous, with many
irregularly scattered vascular bundles.
Odor, slight; taste, slightly
sweet and mucous, followed by bitterness.
Identification:
(1) Shake vigorously 0.5 g of pulverized Anemarrhena Rhizome with
10 mL of water in a test tube: a lasting fine foam is produced. Filter the
mixture, and to 2 mL of the filtrate add 1 drop of iron (III) chloride TS: a dark
green precipitate is produced.
(2) Warm 0.5 g of pulverized Anemarrhena Rhizome with 2 mL of
acetic anhydride on a water bath for 2 minutes while shaking, then filter, and
to the filtrate add carefully 1 mL of sulfuric acid to make two layers: a
red-brown color develops at the zone of contact.
Purity:
(1) Heavy metals. Proceed with 3.0 g of pulverized Anemarrhena
Rhizome according to Method 3, and perform the test. Prepare the control
solution with 3.0 mL of Standard Lead Solution (not more than 10 ppm).
(2) Arsenic. Prepare the test solution with 0.40 g of pulverized
Anemarrhena Rhizome according to Method 4, and perform the test (not more than
5 ppm).
(3) Foreign matter <5.01>.The amount of fiber, originating
from the dead leaves, and other foreign matters contained in Anemarrhena
Rhizome is not more than 3.0z.
Total ash:
Not more than 7.0z.
Acid-insoluble ash:
Not more than 2.5z.
Containers and storage:
Containers.Well-closed containers.
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