title: Control of browning of minimally processed mangoes subjected to ultraviolet radiation pulses.
abstract: The pulsed ultraviolet radiation (UVP) has been used as an alternative strategy for the control of microorganisms in food. However, its application causes the browning of minimally processed fruits and vegetables. In order to control the browning of the 'Tommy Atkins' minimally processed mango and treated with UVP(5.7 J cm-2) it was used 1-methylcyclopropene (1-MCP) (0.5 μL L-1), an ethylene action blocker in separate stages, comprising five treatments: control, UVP(U), 1-MCP + UVP(M + U), UVP+ 1-MCP (U + M) e 1-MCP + UVP+ 1-MCP (M + U + M). At the 1st, 7th and 14th days of storage at 12 °C, we evaluated the color (L* and b*), electrolyte leakage, polyphenol oxidase, total extractable polyphenols, vitamin C and total antioxidant activity. The 1-MCP, when applied before UVP, prevented the loss of vitamin C and when applied in a double dose, retained the yellow color (b*) of the cubes. However, the 1-MCP reduced lightness (L*) of independent mango cubes whatever applied before and/or after the UVP. Thus, the application of 1-MCP did not control, but intensified the browning of minimally processed mangoes irradiated with UVP.
authors.affiliation: Embrapa Tropical Agroindustry, Dr. Sara Mesquita Street 2270, Fortaleza, Ceara 60511110 Brazil.
authors.forename: Aline Ellen Duarte
authors.initials: AED
authors.lastname: de Sousa
authors.affiliation: Department of Plant Biology, Federal University of Viçosa, Peter Henry Rolfs Avenues, s/n, Viçosa, Minas Gerais 36570900 Brazil.
authors.forename: Kelem Silva
authors.initials: KS
authors.lastname: Fonseca
authors.affiliation: Department of Biochemistry and Molecular Biology, Federal University of Ceará, Mister Hull Avenue 2297, Fortaleza, Ceara 60451970 Brazil.
authors.forename: Wilny Karen
authors.initials: WK
authors.lastname: da Silva Gomes
authors.affiliation: Department of Biochemistry and Molecular Biology, Federal University of Ceará, Mister Hull Avenue 2297, Fortaleza, Ceara 60451970 Brazil.
authors.forename: Ana Priscila
authors.initials: AP
authors.lastname: Monteiro da Silva
authors.affiliation: Embrapa Tropical Agroindustry, Dr. Sara Mesquita Street 2270, Fortaleza, Ceara 60511110 Brazil.
authors.forename: Ebenézer
authors.initials: E
authors.lastname: de Oliveira Silva
authors.affiliation: Department of Plant Biology, Federal University of Viçosa, Peter Henry Rolfs Avenues, s/n, Viçosa, Minas Gerais 36570900 Brazil.
authors.forename: Rolf
authors.initials: R
authors.lastname: Puschmann
keywords: 1-Methylcyclopropene; Browning; Fresh-cut; Mangifera indica L.; Pulsed UV