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Previous issue date: 2004-02-20 / Brazil has been highlighted as a major producer of fruits, especially tropical and
subtropical. The passion fruit belongs to the family PASSIFLORACEAE and order
PASSIFLORALES. The gender PASSIFLORAS is composed of at least 400 species, all
originated from Tropical America and belongs to the sub-gender GRANADILLA,
Quadrangles serie. The PASSIFLORA ALATA CURTIS is a native species and fairly
widespread occurrence in Brazil where it is also commonly known by passion sweetfruit
among other names. In Brazil, the species is found from the State Bahia all the way
to the State of Rio Grande do Sul, showing good adaptation to the conditions
EDAFOCLIM?TICAS. Considering the market potential, special attention should be
given in post-harvest of passion sweet-fruit. This task aims to evaluate the behavior
post-harvest of the passion sweet-fruit (PASSIFLORA ALATA CURTIS) submitted to
the application of different doses of radiation gamma aimed at increasing the
conservation period, with maintenance of quality and health. This work was developed
in post-harvest in the laboratory of the Department of FITOTECCNIA - Institute of
Agriculture UFRRJ with fruits collected at the Site of Passion sweet-fruit, in the
municipality of Paty do Alferes. After being selected, they were transported to the
Office of Research and Development to be irradiated. The fruits received the following
treatments: Irradiation with source of C?sio 137 (137Cs) at doses of 0.1, 0.2, 0.5 and 1.0
kGy. After treatment, all fruits were stored at a temperature of 12 C and 90% UR.
Assessments were made every 4 days through determinations of appearance, loss of
fresh weight, firmness equatorial and apical, soluble solids, pH, total titratable acidity,
ascorbic acid and longevity of the fruits. All fruits, regardless of the dose of gamma
radiation that were submitted showed changes in appearance during the period of
storage and tended to loss both firmness as well firmness apical and equatorial. There
was a small variation in levels of soluble solids, and the process of irradiation led the
fruits of sweet passion fruit to no traditional behavior, not only showing a trend of
accumulation or reduction of soluble solids total. It follows that the lower doses favored
to increase the conservation period with maintaining the health and quality of the fruits
of fresh passion fruit during the 28 days of storage fruits. / O Brasil tem se destacado como grande produtor de frutas, especialmente as tropicais e
subtropicais. O maracujazeiro pertence ? fam?lia Passifloraceae e ? ordem Passiflorales.
O g?nero Passifloras ? composto de pelo menos 400 esp?cies, todas elas originadas da
Am?rica Tropical e pertence ao sub-g?nero Granadilla, s?rie Quadrangulares. A
Passiflora alata Curtis ? uma esp?cie ind?gena e de ocorr?ncia bastante generalizada no
Brasil onde ? tamb?m conhecida vulgarmente por maracuj?-doce entre outros nomes.
No Brasil, a esp?cie ? encontrada da Bahia at? o Rio Grande do Sul, apresentando boa
adapta??o ?s condi??es edafoclim?ticas. Considerando o potencial de mercado, uma
especial aten??o deve ser dada na p?s-colheita de maracuj?-doce. Este trabalho tem
como objetivo avaliar o comportamento p?s-colheita de frutos do maracujazeiro-doce
(Passiflora alata Curtis) submetidos ? aplica??o de diferentes doses de radia??o gama
visando aumento do per?odo de conserva??o com manuten??o de qualidade e sanidade.
O presente trabalho foi desenvolvido no Laborat?rio de P?s-Colheita do Departamento
de Fitotecnia Instituto de Agronomia da UFRRJ com frutos obtidos no S?tio do
Maracuj?-doce, no munic?pio de Paty do Alferes. Ap?s serem selecionados, os mesmos
foram transportados at? o Instituto de Pesquisa e Desenvolvimento para serem
irradiados. Os frutos receberam os seguintes tratamentos: Irradia??o com fonte de C?sio
137 (137Cs) nas doses de 0,1; 0,2; 0,5 e 1,0 kGy. Ap?s o tratamento, todos os frutos
foram armazenados em temperatura de 12?C e 90% de UR. Foram feitas avalia??es de 4
em 4 dias atrav?s de determina??es de apar?ncia, perda de massa fresca, firmeza apical
e equatorial, s?lidos sol?veis totais, pH, acidez total titul?vel, ?cido asc?rbico e
longevidade dos frutos. Todos os frutos, independente da dose de radia??o gama a que
foram submetidos apresentaram altera??es na apar?ncia no decorrer do per?odo de
armazenamento e tiveram tend?ncia a perda de firmeza tanto firmeza apical quanto
firmeza equatorial. Houve uma pequena varia??o no teor de s?lidos sol?veis totais,
sendo que o processo de irradia??o levou os frutos de maracuj?-doce a um
comportamento n?o tradicional, n?o apresentando a uma tend?ncia ?nica de ac?mulo ou
de redu??o de s?lidos sol?veis totais. Conclui-se que as doses mais baixas favoreceram
ao aumento do per?odo de conserva??o com manuten??o da qualidade e sanidade dos
frutos do maracujazeiro doce durante o per?odo de 28 dias de armazenamento dos
frutos.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:tede/528 |
| Date | 20 February 2004 |
| Creators | Floriano, Cristiano Magela |
| Contributors | Coneglian, Regina Celi Cavestr? |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Curso de P?s-Gradua??o em Fitotecnia, UFRRJ, Brasil, Produ??o Vegetal |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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