Powdered Atractylodes Lancea Rhizome
Atractylodis Lanceae Rhizoma Pulveratum
Powdered Atractylodes Lancea Rhizome is the powder of Atractylodes Lancea Rhizome.
Description:
Powdered Atractylodes Lancea Rhizome occurs as a yellow-brown powder. It has a characteristic odor, and a slightly bitter taste.
Under a microscope, Powdered Atractylodes Lancea Rhizome reveals mainly parenchyma cells, spherocrystals of inulin, fragments of parenchyma cells containing fine needle crystals of calcium oxalate as their contents; and further fragments of light yellow thick-walled fibers, stone cells and cork cells; a few fragments of reticulate and scalariform vessels, and small yellow-brown secreted masses or oil drops; starch grains absent.
Purity:
(1) Heavy metals. Proceed with 3.0 g of Powdered Atractylodes Lancea 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 <1.11>.Prepare the test solution with 0.40 g of Powdered Atractylodes Lancea Rhizome according to Method 4, and perform the test (not more than 5 ppm).
(3) Powdered atractylodes rhizome.To 0.5 g of Powdered Atractylodes Lancea Rhizome add 5 mL of ethanol (95), macerate by warming in a water bath for 2 minutes, and filter. To 2 mL of the filtrate add 0.5 mL of vanillin hydrochloric acid TS, and shake immediately: no red to red-purple color develops within 1 minute.
Total ash:
Not more than 7.0z.
Acid-insoluble ash:
Not more than 1.5z.
Essential oil content
Perform the test with 50.0 g of Powdered Atractylodes Lancea Rhizome: the volume of essential oil is not less than 0.5 mL.
Containers and storage:
Containers.Tight containers.
