Data/hora: 06/06/2024 05:24:07

Provedor de dados: | 64
País: | Brazil
Título: | Color, physicochemical parameters and antioxidant potential of whole grape juices subject to different UV-C radiation doses
Autores: | Henrique,Paôla de Castro; Boas,Ana Carolina Vilas; Lima,Rafaella Araújo Zambaldi; Decarlos,Antonio Neto; Lima,Luiz Carlos de Oliveira.
Data: | 2016-04-01
Ano: | 2016
Palavras-chave: | Antioxidant activity; Vitamin C.
Resumo: | ABSTRACT Knowing that moderate stress such as UV radiation can activate defense mechanisms in plants, the use of UV-C radiation appears as hypothesis of a promising technique that would help to stimulate and enhance beneficial compounds for health, through a clean and healthy technology. In this study, the possible induction of secondary metabolism, the increase in the content of phytochemical compounds and physicochemical changes through the use of UV-C radiation were evaluated on whole grape juices produced with Vitis labrusca grapes, cultivar Isabel Precoce. Grapes were harvested, sanitized, exposed to UV-C radiation at doses of 0, 2, 4 and 6 KJ m-2, and then the juices were prepared and packed into amber glass bottles at room temperature. Analyses were performed at 0, 30, 60, 90 and 120 days of storage. Based on results obtained and conditions in which the experiment was performed, UV-C treatment in grapes caused abiotic stress in the fruits, affecting color, titratable acidity, soluble solids/titratable acidity ratio, vitamin C and percentage of protection against oxidation. Application of UV-C did not change levels of phenolic compounds in fruit juices or the percentage of scavenging free radicals, pH and soluble solids.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000200226
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/1413-70542016401035215
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.40 n.2 2016
Fonte: | info:eu-repo/semantics/openAccess