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(Vaughan and Geissler 1997)
Horseradish has been cultivated for its root for over 2,000 years. Today, commercial production occurs mainly in North America (led by the State of Illinois; Walters and Wahle 2010) and Europe. Armoracia rusticana is propagated exclusively vegetatively. Like many vegetatively propagated crops, cultivated A. rusticana plants are generally sterile. This species is not known to occur in the wild, although the two other species in the genus, A. macrocarpa and A. sisymbrioides do occur in the wild and reproduce by seed.
(Sampliner et al. 2009)
Production from Horseradish roots of peroxidase (a heme-containing enzyme that utilizes hydrogen peroxide to oxidize a wide variety of organic and inorganic compounds) occurs on a relatively large scale because of the commercial uses of the enzyme, e.g., as a component of clinical diagnostic kits and for immunoassays (Veitch 2004).