Lepidium meyenii Tuber

Lepidium meyenii Tuber

Proposed For Development Version 0.1

Lepidium meyenii Tuber


 

DEFINITION

The article consists of the tuberous root of Lepidium meyenii Walp. (Family Brassicaceae) collected from May to July. It meets the Acceptance criteria under the Assay.

 

SYNONYMS

Lepidium gelidum Wedd.

Lepidium meyenii var. affine (Wedd.) Thell.

Lepidium meyenii subsp. gelidum (Wedd.) Thell.

Lepidium meyenii subsp. marginatum (Griseb.) Thell.

Lepidium orbignyanum Wedd.

Lepidium peruvianum G. Chacon de Popovici

Lepidium weddellii O.E. Schulz

 

POTENTIAL CONFOUNDING MATERIALS

Dioscorea alata L.

 

SELECTED COMMON NAMES

Danish: Perukarse

English: Maca, Peruvian ginseng

Spanish: Maca, mace

Swedish: Maca

 

CONSTITUENTS OF INTEREST

Polyunsaturated fatty acids, and their amides: macaenes and macamides

Alkaloids, amino acids, and glucosinolates

  

IDENTIFICATION

• A. Botanical Characteristics

Macroscopic: The tubers' size varies from  2–5 cm; color may be white, yellow, reddish and white, white and yellow, white and purple, light-lead gray, purple and lead gray or yellow, red and gray; tuber has a meaty texture and a rounded, globose, or napiform shape.

Microscopic

Transverse section: Epidermal cells are square and slightly larger than the cortical cells; outer cortical cells are elongated and flattened, blemished yellow and purple color; cortical area shows circular with radially arranged xylem vessels towards the center, the phloem has an opaque color, opposite the xylem a thin meristematic procambium; layers of rectangular cells suberized, of which the outermost layers are flattened and have a disorganized appearance; central vascular cylinder is branched, star-shaped, surrounded by a winding contour vascular cambium, inward xylem vessels, radially arranged in abundant parenchyma phloem area; layers of  parenchyma cells, round or ellipsoidal shapes, full of starch granules.

B. Thin-Layer Chromatography

CALL FOR SUBMISSION OF VALIDATED INFORMATION

 

Additional information including validation data will be required to complete the development of the Identification. For requirements, please see under "Identification" and related sections of the guidelines document “Monographs in the Herbal Medicines Compendium” at http://hmc.usp.org/about/general-noticesguidelines.

 

Interested parties are encouraged to submit their proposals to complete the monograph.

 

ASSAY

• Content of Constituents of Interest

CALL FOR SUBMISSION OF VALIDATED INFORMATION

 

Additional information including validation data will be required to complete the development of the Assay. For requirements, please see under "Composition" and related sections of the guidelines document “Monographs in the Herbal Medicines Compendium” at http://hmc.usp.org/about/general-noticesguidelines 

 

Interested parties are encouraged to submit their proposals to complete the monograph.

 

CONTAMINANTS

• Articles of Botanical Origin, General Method for Pesticide Residues Analysis <561>: Meets the requirements

• Microbial Enumeration Tests <61>: The total aerobic bacterial count does not exceed 105 cfu/g, the total combined molds and yeasts count does not exceed 103 cfu/g, and the bile-tolerant Gram-negative bacteria does not exceed 103 cfu/g.

• Tests for Specified Microorganisms <62>: Meets the requirements of the tests for the absence of Salmonella species and Escherichia coli

• Articles of Botanical Origin, Test for Aflatoxins <561>: Meets the requirements

 

ADDITIONAL REQUIREMENTS

• Packaging and Storage: Preserve in well-closed containers, protected from light and moisture, and store at room temperature.

• Labeling: The label states the Latin binomial and the part of the plant contained in the article.

• USP Reference Standards <11>

USP Aflatoxins RS

TO COME

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