Wintergreen is a group of aromatic plants.[1] The term wintergreen once commonly referred to plants that remain green (continue photosynthesis) throughout the winter. The term evergreen is now more commonly used for this characteristic.
Most species of the shrub genus Gaultheria demonstrate this characteristic and are called wintergreens in North America, the most common generally being the American wintergreen (Gaultheria procumbens).[2] Wintergreens in the genus Gaultheria contain an aromatic compound, methyl salicylate, and are used as a mintlike flavoring.
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Uses
The berries of most species can be eaten raw or used in pies.[3]
Wintergreen is a common flavoring in American products ranging from chewing gum, mints, and candies to smokeless tobacco such as dipping tobacco (American "dip" snuff) and snus. It is a common flavoring for dental hygiene products such as mouthwash and toothpaste. It is often a component of root beer, which originated in the United States.
Wintergreen oil is an ingredient in some vegetable-oil based lubricants used in firearm maintenance. These products, sold under the names Seal1 and Frog Lube, are proprietary blends of vegetable oils intended to clean, lubricate and preserve the metal surfaces of firearms.[4] They have the advantages over petroleum-based products of being non-toxic and biodegradable.
Artificial wintergreen oil, which is pure methyl salicylate, is used in microscopy because of its high refractive index.[5] Natural wintergreen oil can be distinguished from artificial by gas chromatography (GC) and GC isotope ratio mass spectrometry analysis.[6]
Oil
The Gaultheria species share the common characteristic of producing oil of wintergreen. Wintergreen oil is a pale yellow or pinkish fluid liquid that is strongly aromatic with a sweet, woody odor (components: methyl salicylate (about 98%), α-pinene, myrcene, delta-3-carene, limonene, 3,7-guaiadiene, and delta-cadinene) that gives such plants a distinctive "medicinal" smell whenever bruised. Salicylate sensitivity is a common adverse reaction to the methyl salicylate in oil of wintergreen; it can produce allergy-like symptoms or asthma.[medical citation needed]
Wintergreen essential oil is usually obtained by steam distillation of the leaves of the plant following maceration in warm water. Methyl salicylate is not present in the plant until formed by enzymatic action from a glycoside within the leaves as they are macerated in warm water.[7] Oil of wintergreen is also manufactured from some species of birch, but these deciduous trees are not called wintergreens. Spiraea plants also contain methyl salicylate in large amounts and are used similarly to wintergreen. Wintergreen has a strong "minty" odor and flavor; however, the Gaultheria-genus plants are not true mints, which belong to the genus Mentha.
Wintergreen also is used in some perfumery applications and as a flavoring agent for toothpaste, chewing gum, soft drinks, confectionery, Listerine, and mint flavorings. Wintergreen is used for rust removal and degreasing of machinery and is particularly effective for breaking through sea water corrosion.[citation needed]
Toxicity of oil
One milliliter (20 drops) of wintergreen oil is equivalent to about 1860 mg of aspirin, or almost six regular-strength adult aspirin tablets.[8]
Treatment is identical to the other salicylates. Early use of hemodialysis in conjunction with maximal supportive measures is encouraged in any significant ingestion of methyl salicylate.[9]
See also
- Gaultheria humifusa—alpine wintergreen
- Gaultheria procumbens—eastern teaberry, checkerberry, boxberry, or American wintergreen
- Gaultheria ovatifolia—western teaberry or Oregon spicy wintergreen
- Chimaphila maculata—striped wintergreen
- Gaultheria fragrantissima—fragrant wintergreen
References
- ^ "WINTERGREEN". hort.purdue.edu. Retrieved 2022-05-02.
- ^ "Wintergreen | Gaultheria procumbens". wildadirondacks.org. Retrieved 2022-05-02.
- ^ Angier, Bradford (1974). Field Guide to Edible Wild Plants. Harrisburg, PA: Stackpole Books. p. 252. ISBN 0-8117-0616-8. OCLC 799792.
- ^ "Froglube, Tracklube, and Seal1 Laboratory Analysis". Vuurwapen Blog. 2016-01-14. Retrieved 2018-09-20.
- ^ Cecilia W. Lo, 2000. Developmental biology protocols, Volume 1, Springer in google books
- ^ Murphy, Brett J.; Carlson, Richard E.; Howa, John D.; Wilson, Tyler M.; Buch, R. Michael (2021-09-03). "Determining the authenticity of methyl salicylate in Gaultheria procumbens L. and Betula lenta L. essential oils using isotope ratio mass spectrometry". Journal of Essential Oil Research. 33 (5): 442–451. doi:10.1080/10412905.2021.1925362. ISSN 1041-2905. S2CID 236342132.
- ^ Essential Oil Profile of Wintergreen by Ingrid Krein
- ^ Johnson, P. N.; Welch, D. W. (1984). "Methyl salicylate/aspirin (salicylate) equivalence: who do you trust?". Vet Hum Toxicol. 26 (4): 317–318. PMID 6464351.
- ^ Howrie, D. L.; Moriaty, R.; Breit, R. (1985). "Candy flavoring as a source of salicylate poisoning". Pediatrics. 75 (5): 869–871. doi:10.1542/peds.75.5.869. PMID 3991273. S2CID 10089617.
- Beck TR, Beck JB (1963). Elements of Medical Jurisprudence, ed 11. Philadelphia, JB Lippincott, 1963.
- Stevenson CA (1937). "Oil of wintergreen poisoning". Med Sci 193:772–788.
- McGuigan MA (1987). "A two-year review of salicylate deaths in Ontario". Arch Intern Med 147:510–512.
This page was last edited on 9 December 2023, at 07:54