title: Effects of gamma irradiation on chemical composition and antioxidant potential of processed samples of the wild mushroom Macrolepiota procera.
abstract: It was previously demonstrated that gamma irradiation was the processing technology with the highest capacity to maintain the chemical profile of fresh Macrolepiota procera wild mushroom, when compared to freeze-dried or oven-dried samples. Herein, it was aimed to evaluate gamma irradiation effects on processed samples. Chemical composition and antioxidant potential of irradiated (0.5 and 1 kGy) fresh, frozen and dried samples were determined by chromatographic techniques and in vitro assays, respectively. M. procera irradiation attenuated the effects caused by oven-drying or freezing; combining freeze treatment with 0.5 kGy dose preserved total tocopherols. Rather than a conservation methodology, gamma irradiation might act as a useful adjuvant to other conservation techniques (e.g., freezing or oven-drying).
authors.affiliation: CIMO-ESA, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Ap. 1172, 5301-855 Bragança, Portugal; REQUIMTE/Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira no. 228, 4050-313 Porto, Portugal.
authors.forename: Ângela
authors.initials: Â
authors.lastname: Fernandes
authors.forename: João C M
authors.initials: JC
authors.lastname: Barreira
authors.forename: Amilcar L
authors.initials: AL
authors.lastname: Antonio
authors.forename: M Beatriz P P
authors.initials: MB
authors.lastname: Oliveira
authors.forename: Anabela
authors.initials: A
authors.lastname: Martins
authors.forename: Isabel C F R
authors.initials: IC
authors.lastname: Ferreira
mesh_terms: D000363:Agaricales / Q000737:chemistry* / Q000528:radiation effects*; D000975:Antioxidants / Q000737:chemistry*; D003890:Desiccation; D005511:Food Handling; D005514:Food Irradiation / Q000379:methods*; D005720:Gamma Rays; D010936:Plant Extracts / Q000737:chemistry*; D014675:Vegetables / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010936:Plant Extracts
keywords: Chemical parameters; Drying; Freezing; Gamma irradiation; Macrolepiota procera; Wild mushroom