Lein

Synonym(s)

common flax; linseed; Linum L. (wis.); linum usitatissimum

Definition
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Linseed (Linum), also known as flax, is a large plant genus with 200 species within the linen family (Linaceae), which is found in temperate and subtropical regions. The "flax genus" is the largest in the flax family and is classified in the subfamily Linoideae.

The flax plants are annual or biennial or perennial herbaceous shrubs with sessile leaves.
Flax plants produce variously colored yellow, blue, red or white flowers. The capsule fruits contain several black or brown seeds.
Common flax (Linum usitatissimum L.) is also known as flax or cultivated flax. Linum usitatissimum is the medicinally used medicinal plant.
Linseed oil: see Lini oleum virginale

Linseed oil acid: s. Linoleic acid
Linseed: Lini semen or Semen Lini is used medicinally as dried fruit and for medicinal purposes (Ph.Eur.8, Commission 8).

Linseed is also used in the cosmetics industry under the INCI name "Linseed". It acts as an emollient, skin care product and solvent in cosmetic formulations. Linseed oil is also used in the industry in paints, varnishes and linoleum.

Literature
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Alvarez-Perea A et al (2013) Anaphylaxis caused by flaxseed. J Investig Allergol Clin Immunol 23:446-447.
de Souza Franco E et al. (2012) Effect of a Semisolid Formulation of Linum usitatissimum L. (Linseed) Oil on the Repair of Skin Wounds. Evid Based Complement Alternat Med 2012:270752.
De Spirt S et al. (2009) Intervention with flaxseed and borage oil supplements modulates skin condition in women. Br J Nutr 101:440-445.
Fremont S et al (2010) Prospective study of sensitization and food allergy to flaxseed in 1317 subjects. Eur Ann Allergy Clin Immunol 42:103-111.
Styrczewska M et al.(2015) Flax Fiber Hydrophobic Extract Inhibits Human Skin Cells Inflammation and Causes Remodeling of Extracellular Matrix and Wound Closure Activation. Biomed Res Int 2015:862391.
Tülüce Y et al (2012) Photoprotective effect of flax seed oil (Linum usitatissimum L.) against ultraviolet C-induced apoptosis and oxidative stress in rats. Toxicol Ind Health 28:99-107.
https://arzneipflanzenlexikon.info/lein.php.
https://plants.fnr.de/industrialplants/medicinalplants/plants-database.