Pós-colheita de mangas 'Tommy Atkins' recobertas com quitosana
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Data
2011-10-01
Autores
Souza, Maria Luzenira de
Morgado, Cristiane Maria Ascari [UNESP]
Marques, Kelly Magalhães [UNESP]
Mattiuz, Claudia Fabrino Machado
Mattiuz, Ben-Hur [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
O objetivo deste trabalho foi avaliar a influência de cobertura de quitosana na pós-colheita de mangas 'Tommy Atkins', colhidas de vez e armazenadas a 23 ºC (65% UR). As mangas foram adquiridas na CEAGESP de Ribeirão Preto-SP, e transportadas ao Laboratório de Tecnologia de Produtos Agrícolas da UNESP de Jaboticabal. Após a seleção, os frutos foram higienizados em solução de dicloro s. triazinatriona sódica di-hidratada (Sumaveg®) a 200 mg 100g-1 de cloro livre por 10 minutos, secadas, imersas nas soluções a 0%; 1,0%; 1,5% e 2,0% de quitosana por 1 minuto, secadas sob ventilação, acondicionadas em bandejas e armazenadas a 23±2 °C e 65±5% UR, por 9 dias. Foram utilizados três repetições com dois frutos cada. Avaliaram-se, a cada três dias, a perda de massa fresca, a cor, a firmeza, os teores de ácido ascórbico, de sólidos solúveis, de acidez titulável e sólidos solúveis / acidez titulável. O recobrimento com quitosana retarda o amadurecimento de mangas 'Tommy Atkins' de vez, durante nove dias de armazenamento a 23 ºC, sendo que a concentração de 1,5% propicia melhor manutenção da cor da polpa, dos teores de sólidos solúveis, de acidez titulável, de ácido ascórbico, dos valores de SS/AT e de firmeza.
The objective of this work was to evaluate the influence of chitosan in the post-harvest of 'Tommy Atkins' mangoes, harvested in the semi-ripe stage and stored at 23ºC (65% RH). Mangoes from CEAGESP, Ribeirão Preto, SP, Brazil were transported to the Laboratory of Technology of Agricultural Products of UNESP Jaboticabal. After selection, the fruits were washed and the surface sanitized with a solution of dichloro s. triazinatriona sodium dihydrate (Sumaveg®) 200 mg 100g-1 of free chlorine for 10 minutes, dried, dipped in solution 0%; 1.0%; 1.5%; 2.0% oh chitosan for 1 minute, dried under ventilation, packed in trays and stored at 23±2°C and 65±5% UR for 9 days. Three replicates of two fruits each were used. The fruits every three days had the weight loss, the color, the firmness, the ascorbic acid content, the soluble solids, the titratable acidity and the soluble solids / titratable acidity evaluated. The coating with chitosan delayed the ripening of 'Tommy Atkins' semi-ripe mangoes stored at 23ºC. The concentration of 1.5% provided better maintenance of color, firmness, ascorbic acid content, soluble solids, titratable acidity and soluble solids / titratable acidity
The objective of this work was to evaluate the influence of chitosan in the post-harvest of 'Tommy Atkins' mangoes, harvested in the semi-ripe stage and stored at 23ºC (65% RH). Mangoes from CEAGESP, Ribeirão Preto, SP, Brazil were transported to the Laboratory of Technology of Agricultural Products of UNESP Jaboticabal. After selection, the fruits were washed and the surface sanitized with a solution of dichloro s. triazinatriona sodium dihydrate (Sumaveg®) 200 mg 100g-1 of free chlorine for 10 minutes, dried, dipped in solution 0%; 1.0%; 1.5%; 2.0% oh chitosan for 1 minute, dried under ventilation, packed in trays and stored at 23±2°C and 65±5% UR for 9 days. Three replicates of two fruits each were used. The fruits every three days had the weight loss, the color, the firmness, the ascorbic acid content, the soluble solids, the titratable acidity and the soluble solids / titratable acidity evaluated. The coating with chitosan delayed the ripening of 'Tommy Atkins' semi-ripe mangoes stored at 23ºC. The concentration of 1.5% provided better maintenance of color, firmness, ascorbic acid content, soluble solids, titratable acidity and soluble solids / titratable acidity
Descrição
Palavras-chave
Mangifera indica, Conservation, Quality, Mangifera indica, Conservação, qualidade
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 33, n. spe1, p. 337-343, 2011.