Data/hora: 13/06/2024 05:04:25

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 21/11/2005
Data da última atualização: | 21/11/2005
Autoria: | PIMENTEL, R. M. de A.; WALDER, J. M. M.
Afiliação: | USP/CENA.
Título: | Gamma radiation in papaya harvested at three stages of maturation.
Ano de publicação: | 2004
Fonte/Imprenta: | Scientia Agricola, Piracicaba, v. 1, n. 2, p.146-150, mar./apr. 2004.
ISSN: | 0103-9016
Idioma: | Inglês
Conteúdo: | Papaya is a fragile, perishable fruit, highly accepted worldwide. To keep the quality of papaya from harvest to the consumers, conservation techniques are often used; among them is the application of gamma irradiation. The objective of this work was to evaluate gamma irradiation in papayas harvested at three degrees of maturation, in order to increase shelf life. Papayas were harvested in perfect quality conditions and selected by skin coloration into three distinct degrees of maturation: maturation 0, or beginning of yellow coloration; maturation 1, yellow stripes more developed, and maturation 2, one third yellow. Half of them were irradiated with 0.7 kGy, while the other half became control treatment. They were analyzed in four periods of conservation, which were 1 DAI (days after irradiation refrigerated at 11±1°C), 14 DAI, 14 DAI + 3 DRT (room temperature at 24°±2°C) and 14 DAI + 6 DRT. The papaya maturation degree at harvest did not influence the radiation effect. Irradiation maintained firmness of papaya and, therefore,  delayed ripening; modified the green color of papaya to a lighter, more intense tone, which determined more homogeneity in the development of the skin´s yellow color (greater values of L* and croma). There was no effect of irradiation in papaya weight loss, occurrence of diseases, croma of flesh color, pH and total soluble solids contents.
Palavras-Chave: | food conservation; gamma irradiation; Post-harvest; tropical fruits.
Thesaurus Nal: | shelf life.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (22267-1) - ADP - AP - -- -  -  -  - DIS