title: Reduction of deoxynivalenol contaminating corn silage by short-term ultraviolet irradiation: a pilot study.
abstract: We evaluated the effects of short-term (up to 60 min) irradiation of corn silage with ultraviolet (UV) light (intensity: 1.5 mW/cm(2) at 254 nm UV-C wavelength), along with constant stirring of the silage, on the concentration of deoxynivalenol (DON), a major feed-contaminating mycotoxin, and those of α-tocopherol (vitamin E) and β-carotene (pro-vitamin A). The initial DON concentration in artificially contaminated silage was set at approximately 60 µg/g dry silage weight. After irradiation, the level of DON was decreased significantly (P<0.05) by approximately 13 µg/g (22%) on average at 30 min, and by 12 µg/g (21%) at 60 min. However, the concentrations of the vitamins remained relatively unaffected. Although further improvement is needed, short-term UV irradiation seems a promising on-farm method for reducing the level of DON in feedstuffs.
authors.affiliation: Faculty of Life Sciences, Kyoto Sangyo University, Motoyama, Kamigamo, Kita-ku, Kyoto, Kyoto 603–8555, Japan. hmurata@cc.kyoto-su.ac.jp
authors.forename: Hideo
authors.initials: H
authors.lastname: Murata
authors.forename: Daisuke
authors.initials: D
authors.lastname: Yamaguchi
authors.forename: Akiko
authors.initials: A
authors.lastname: Nagai
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Shimada
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005506:Food Contamination / Q000032:analysis; D005514:Food Irradiation; D010865:Pilot Projects; D012820:Silage; D014255:Trichothecenes / Q000032:analysis / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014815:Vitamins / Q000032:analysis / Q000528:radiation effects; D024502:alpha-Tocopherol / Q000032:analysis / Q000528:radiation effects; D019207:beta Carotene / Q000032:analysis / Q000528:radiation effects
chemical_list: D014255:Trichothecenes; D014815:Vitamins; D019207:beta Carotene; D024502:alpha-Tocopherol; C007262:deoxynivalenol