Title: Horse-radish

Additional Names: Raphanus rusticanus; Kren; Maliner Kren

Literature References: The root of Radicula armoracia (L.) Robinson [Cochlearia armoracia L.; Armoracia lopathifolia Gilib.; Roripa armoracia Hitch.; Nasturtium armoracia Fries], Cruciferae. Habit. Europe, naturalized in North America. Contains ascorbic acid and sinigrin which yields allyl isothiocyanate on hydrolysis with peroxidase or myrosinase, an enzyme from black mustard: Stoll, Seebeck, Helv. Chim. Acta 31, 1432 (1948).

Properties: Active ingredient of Rasapen, a urinary antiseptic.

Use: Condiment.