Turnera diffusa Leaf

Turnera diffusa Leaf

Proposed For Development Version 0.1

Turnera diffusa Leaf


 

DEFINITION

The article consists of the dried leaves of Turnera diffusa Wild. ex Schult. (Family Passifloraceae). It meets the Acceptance criteria under the Assay

 

SYNONYMS

Bohadschia humifusa C. Presl

Turnera aphrodisiaca Ward

Turnera diffusa var. aphrodisiaca (Ward) Urb.

Turnera humifusa (C. Presl) Endl. ex Walp.

Turnera pringlei Rose

Turnera macrophylla Ham.

 

POTENTIAL CONFOUNDING MATERIALS

Haplopappus discoideus DC.

Isocoma veneta (Kunth) E. Green

 

SELECTED COMMON NAMES

Danish: Udspærret turnera

English: Damiana, Mexican-holly

French: Thé bourrique

German: Schmalblättrige damiana

Spanish: Damiana de Guerrero

 

CONSTITUENTS OF INTEREST

Flavonoids, terpenoids, and cyanogenic derivatives

 

IDENTIFICATION

• A. Botanical Characteristics

Macroscopic: Leaf is light grayish-green to yellowish-green, lower surface paler; 525 mm long and 310 mm wide, broadly lanceolate, apex sub-acute, base tapering, margin serrate to dentate, 36 teeth on each margin; venation pinnate, main veins leaving midrib at an acute angle, veins more prominent on lower surface; both surfaces pubescent; petiole, 23 mm long. 

Microscopic

Transverse section of leaves: Isobilateral with upper palisade cells slightly smaller and more densely packed than the lower; upper and lower epidermis have numerous covering trichomes or their scars; trichomes, unicellular up to 900 µm long, often twisted or bent near leaf surface, bluntly pointed, lumen very narrow or absent except near base where walls are lignified; vascular strand with crescent-shaped, dense xylem; narrow spongy mesophyll but parenchymatous cells surrounding vascular strand filled with clusters crystals of calcium oxalate crystals, 1025 mm in diameter.

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 test. 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” 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.

 

SPECIFIC TESTS

• Articles of Botanical Origin, Foreign Organic Matter <561>: NMT 3.0%

• Articles of Botanical Origin, Total Ash <561>

Analysis: 2 g of Turnera diffusa, finely powdered

Acceptance criteria: NMT 10%

• Articles of Botanical Origin, Acid-Insoluble Ash <561>

Analysis: 4 g of Turnera diffusa, finely powdered

Acceptance criteria: NMT 3%

 

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>

TO COME

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