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Título : Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation
Autor: Guimarães, Isabela Costa
Menezes, Evandro Galvão Tavares
Abreu, Priscilla Silva de
Rodrigues, Ariel Costa
Borges, Paulo Rogério Siriano
Batista, Luis Roberto
Cirilo, Marcelo Angelo
Lima, Luiz Carlos de Oliveira
Palavras-chave: Co 60 radiation
Postharvest
Conservation
Publicador: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Data da publicação: 7-Mar-2013
Referência: GUIMARÃES, I. C. et al. Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation. Ciência e Tecnologia de Alimentos, Campinas, v. 36, n. 2, p. 316-322, Apr. /Jun. 2013.
Abstract: This study was conducted to evaluate the physicochemical and microbiological characteristics of raspberries exposed to different radiation doses. The fruits were harvested in the city of Campestre, MG, packed in polyethylene bags, and transported to the Federal University of Lavras (UFLA), where they were separated into 4 lots. Irradiation was performed at the Center for Development of Nuclear Technology in Belo Horizonte, MG. The doses used were 0 (control), 0.5, 1.0, and 2.0 kGy. After irradiation, the fruits were transported back to UFLA and stored at 1 °C and 95% relative humidity (RH) for 12 days. The physicochemical analyses for mass loss, total soluble solids, titratable acidity, pH, total soluble sugars, total soluble pectin, firmness, vitamin C content, total antioxidant activity, and total phenolic, and the microbiological assays (coliform at 35 and 45 °C, psychrotrophic and filamentous fungi and yeasts) were performed after 0, 3, 6, 9, and 12 days of storage. Lower loss of mass and filamentous fungi and yeast count were observed in the irradiated fruits, and 2 kGy was determined as the most effective dose for microbial control, but this irradiation dose also resulted in increased loss of fruit firmness.
URI: http://repositorio.ufla.br/jspui/handle/1/9708
Idioma: en
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