Sunflower

Authors: Prof. Dr. med. Peter Altmeyer, Prof. Dr. med. Martina Bacharach-Buhles

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Last updated on: 29.08.2024

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Synonym(s)

Helianthus annuus; Sunflower

Occurrence
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Cultivated plant grown on all continents, native to Mexico. Helianthus annuus is a plant from the Asteraceae family (Compositae).

Field of application/use
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The flowers in teas and drops, together with other plants, are used in natural medicine to treat varicose symptoms and as an antispasmodic. Fruit components are also contained in psoriasis ointments. Helianthus annuus is a parent plant of:

Various extracts and oils of the sunflower are used cosmetically:

Undesirable effects
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The sesquiterpenlactones found in the sunflower leaves and seeds have considerable antibacterial, fungicidal and cytotoxic effects. The plants cultivated in Central Europe contain mainly Niveusin C and 15-hydroxy-3-dehydrodesoxy-fruticin. Some of the sesquiterpenlactones have been identified as highly effective contact allergens. Sensitizing potency: Medium. Frequency of sensitization: Occasional.

Clinical picture
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Allergic contact dermatitis during harvesting and shelling of the kernels has been reported mainly from Hungary. However, contact dermatitis can also be caused by the flowers. Reactions to sunflower extracts are frequently observed in composite allergy sufferers (especially chrysanthemum allergy).

Literature
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  1. Crawford GH et al. (2003) Botanical briefs: the sunflower--Helianthus species L. Cutis 71: 110-112
  2. Hausen BM, Vieluf K (1997) Allergy plants, plant allergens. Ecomed publishing house, Landsberg/Munich, S. 151-153