Temperatura, embalagem e radiação gama na conservação pós-colheita de maná cubiu
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Data
2011-03-18
Autores
Fujita, Erika [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O presente trabalho teve o objetivo de avaliar os efeitos de temperaturas, embalagem (com ou sem filme de PVC) e de doses de radiação gama na qualidade e conservação do fruto de Maná cubiu (Solanum sessiflorum Dunal) verificando suas características físico-químicas e enzimáticas. Os frutos foram colhidos no município de Iguape-SP e levados para o Laboratório de Frutas e Hortaliças do Departamento de Gestão e Tecnologia Agroindustrial da Universidade Estadual Paulista “Julio de Mesquita Filho”, Campus de Botucatu – SP, onde foi instalado o experimento e realizado as análises. O trabalho foi dividido em 2 experimentos: Experimento 1: diferentes temperaturas de armazenamento (ambiente 24 ± 3°C, 6°C, 8°C e 10°C) e embalados em bandejas de polietileno expandido depois cobertos ou não por filme esticável de PVC. A melhor temperatura e embalagem foram utilizadas no Experimento 2: 5 doses diferentes de irradiação (0,0, 0.2 kGy, 0.4 kGy, 0.6 kGy e 0.8 kGy). Nos dois experimentos os frutos foram avaliados quanto: perda de massa fresca, respiração, firmeza, sólidos solúveis, acidez titulável, índice de maturação “Ratio”, pH, teor de açúcar redutor e atividade enzimática da pecinametilesterase, poligalacturonase, polifenoloxidase e peroxidase. O delineamento experimental foi inteiramente casualizado em esquema fatorial. No Experimento 1, utilizou-se 4 x 2 x 6 (temperaturas x embalagem x dias de armazenamento) e no Experimento 2, 5 x 6 (doses de irradiação x dias de armazenamento). As médias dos tratamentos e as interações, comparadas utilizando-se Teste de Tukey a 5% de probabilidade. Os frutos a 10°C e cobertos por filme PVC esticável foram o que ofereceram...
This study aims to evaluate the effects of temperature, packaging (with or without PVC film) and gamma radiation on fruit quality and conservation of Maná-Cubíu (Solanum sessiflorum Dunal). The fruit were harvested in Iguape-SP and taken to the Fruit and Vegetable Laboratory, Department of Agribusiness Management and Technology, State University Paulista “Julio de Mesquita Filho”, Campus the Botucatu – SP, where an experiment was conducted and analysis. The work was divided into two experiments: Experiment 1: different storage temperatures (environment, 24 ± 3°C, 6°C, 8°C e 10°C) and packaged in trays of polyethylene foam then covered or not by the stretchable film PVC. The best temperature and packaging were used in Experiment 2: 5 different doses of irradiation (0,0, 0,2 kGy, 0,4 kGy, 0,6 kGy and 0,8 kGy). In both experiments, fruits were evaluated: weight loss, respiration, firmness, soluble solids, acidity, maturation index, Ratio, pH, reducing sugar and enzyme activity pecinametilesterase, polygalacturonase, peroxidase and polyphenoloxidase.. The experimental design was completely randomized factorial. In Experiment 1, we used 4 x 2 x 6 (temperatures x packaging x days of storage) and in Experiment 2, 5 x 6 (irradiation doses x days of storage). The treatment means and interactions were compared using Tukey test at 5% probability. The fruits at 10 ° C and covered with stretchable PVC film were what gave the best results with the smallest weight loss for the mana cubiu and 0,6 kGy the radiation doses applied to the fruit that have the best results while maintaining the postharvest quality... (Complete abstract click electronic access below)
This study aims to evaluate the effects of temperature, packaging (with or without PVC film) and gamma radiation on fruit quality and conservation of Maná-Cubíu (Solanum sessiflorum Dunal). The fruit were harvested in Iguape-SP and taken to the Fruit and Vegetable Laboratory, Department of Agribusiness Management and Technology, State University Paulista “Julio de Mesquita Filho”, Campus the Botucatu – SP, where an experiment was conducted and analysis. The work was divided into two experiments: Experiment 1: different storage temperatures (environment, 24 ± 3°C, 6°C, 8°C e 10°C) and packaged in trays of polyethylene foam then covered or not by the stretchable film PVC. The best temperature and packaging were used in Experiment 2: 5 different doses of irradiation (0,0, 0,2 kGy, 0,4 kGy, 0,6 kGy and 0,8 kGy). In both experiments, fruits were evaluated: weight loss, respiration, firmness, soluble solids, acidity, maturation index, Ratio, pH, reducing sugar and enzyme activity pecinametilesterase, polygalacturonase, peroxidase and polyphenoloxidase.. The experimental design was completely randomized factorial. In Experiment 1, we used 4 x 2 x 6 (temperatures x packaging x days of storage) and in Experiment 2, 5 x 6 (irradiation doses x days of storage). The treatment means and interactions were compared using Tukey test at 5% probability. The fruits at 10 ° C and covered with stretchable PVC film were what gave the best results with the smallest weight loss for the mana cubiu and 0,6 kGy the radiation doses applied to the fruit that have the best results while maintaining the postharvest quality... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Refrigeração, Cultivos agricolas - Tecnologia pos-colheita, Radiação, Temperatura, Maná cubiu - conservação, Solanum sessiflorum Dunal, Storage, Refrigeration, Irradiation, Native of the Amazon
Como citar
FUJITA, Erika. Temperatura, embalagem e radiação gama na conservação pós-colheita de maná cubiu. 2011. xii, 61 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2011.