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Powdered Valerian
»Powdered Valerian is Valerian reduced to a fine or a very fine powder.It contains no calcium oxalate crystals and no foreign starch granules.It contains not less than 0.3percent of volatile oil and not less than 0.04percent of valerenic acid (C15H22O2).
Packaging and storage—
Preserve in well-closed containers,protected from light and moisture.
Labeling—
The label states the Latin binomial and,following the official name,the parts of the plant source from which the article was derived.
Botanic characteristics—
Diagnostic structures:
Numerous fragments of parenchyma cells containing globules of volatile oil and starch granules;fragments of scalariform and reticulate thickened vessels and tracheids and strongly liquefied narrow fibers;fragments of periderm and of piliferous layer with root hairs;numerous starch granules,rarely simple,mostly compounds of 2to 6components,spheroidal,plano-convex,3to 20,mostly 8to 12µm,in diameter with a central hilum,the starch granules being 7to 30µm in diameter.
Water content,Method Ia á921ñ:
not more than 5.0%.
Heavy metals á231ñ:
not more than 0.005%.
Other requirements—
It responds to the Identificationtests and meets the requirements of the tests for Total ash,Acid-insoluble ash,Extractable matter,Pesticide residues,and Microbial enumerationunder Valerian.
Volatile oil á561ñ:
not less than 0.3%,a 100-g test specimen being used.
Content of valerenic acid—
Proceed as directed for Content of valerenic acidunder Valerian:not less than 0.04%is found.
Auxiliary Information—
Staff Liaison:Gabriel I.Giancaspro,Ph.D.,Senior Scientist and Latin American Specialist
Expert Committee:(DSB)Dietary Supplements:Botanicals
USP28–NF23Page 2134
Phone Number:1-301-816-8343
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