title: Effect of low-dose irradiation on biogenic amines formation in vacuum-packed trout flesh (Oncorhynchus mykiss).
abstract: The effects of vacuum packaging followed by high-energy electron beam irradiation on the shelf-life of fillets of rainbow trout (Oncorhynchus mykiss) were examined. Samples were irradiated at doses of 0.25, 0.50, 0.75, 1.0 and 2.0kGy. The control and treated packs were stored at 3.5°C for up to 28, 42, 70 and 98days (control - 0, 0.25, 0.50 and >0.50kGy respectively). The content of seven biogenic amines (putrescine, cadaverine, spermidine, spermine, histamine, tyramine and tryptamine) were determined. Putrescine, cadaverine and tyramine showed very good correspondence with the irradiation dose and organoleptic properties. Samples of good quality contained less than 10mg/kg of each of these amines. The polyamines spermidine and spermine did not show statistically significant changes with the irradiation dose and the time of storage. With few exceptions, histamine was not detected in the samples treated with radiation. Tryptamine was not detected in any of the samples.
authors.affiliation: Faculty of Agriculture, Department of Applied Chemistry, University of South Bohemia, Branišovská 31a, 370 05 České Budějovice, Czech Republic. Electronic address: krizek@zf.jcu.cz.
authors.forename: Martin
authors.initials: M
authors.lastname: Křížek
authors.affiliation: Faculty of Agriculture, Department of Applied Chemistry, University of South Bohemia, Branišovská 31a, 370 05 České Budějovice, Czech Republic.
authors.forename: Kateřina
authors.initials: K
authors.lastname: Matějková
authors.affiliation: Faculty of Fisheries and Protection of Waters, Institute of Aquaculture, University of South Bohemia, Branišovská 31a, 370 05 České Budějovice, Czech Republic.
authors.forename: František
authors.initials: F
authors.lastname: Vácha
authors.affiliation: Faculty of Agriculture, Department of Applied Chemistry, University of South Bohemia, Branišovská 31a, 370 05 České Budějovice, Czech Republic.
authors.forename: Eva
authors.initials: E
authors.lastname: Dadáková
mesh_terms: D000818:Animals; D001679:Biogenic Amines / Q000737:chemistry*; D005399:Fishes / Q000378:metabolism*; D005514:Food Irradiation / Q000009:adverse effects*; D017686:Oncorhynchus mykiss / Q000378:metabolism*; D011073:Polyamines / Q000737:chemistry; D011700:Putrescine / Q000737:chemistry
chemical_list: D001679:Biogenic Amines; D011073:Polyamines; D011700:Putrescine
keywords: Biogenic amines; Fish; Histamine; Irradiation; Polyamines; Putrescine; Quality changes; Trout