Physical quality of 'Palmer' mango coated with cassava starch

Abstract

The objective of this study was to evaluate changes in the physical attributes of 'Palmer' mango coated with cassava starch biofilm. The fruits were selected, washed, sanitized and coated with the biofilm in the concentrations of 1%, 2% and 3% starch, except for the control (0%), being subsequently stored at 10 ± 0.5 °C and 60% relative humidity for 20 days. Assessments were made every five days to check weight loss, length and diameter, fruit firmness, solute leakage and color of the peel and pulp. The experiment was conducted in a completely randomized design in a factorial 4x5 (coating concentrations x storage periods), with four replications. The results were submitted to analysis of variance and comparison of means by Tukey test at 5% probability. The cassava starch coating was characterized as a good alternative for maintaining the postharvest quality of the 'Palmer' mango in the concentrations from 2%, since it reduced the weight loss of the fruits and kept higher the firmness values, also being efficient in delaying the development of fruit peel color.Additional keywords: biofilm; Mangifera indica L.; postharvest quality. ResumoObjetivou-se com este trabalho avaliar alterações de atributos físicos da manga 'Palmer' revestida com biofilme de fécula de mandioca. Os frutos foram selecionados, lavados, sanitizados e revestidos com o biofilme nas concentrações de 1%, 2% e 3% de fécula, com exceção do controle (0%); em seguida, foram armazenados a 10 ± 0,5 ºC e 60% de umidade relativa, por 20 dias. A cada cinco dias, foram realizadas avaliações de perda de massa, comprimento e diâmetro, firmeza do fruto, extravasamento de solutos e cor da casca e da polpa. O experimento foi conduzido em delineamento experimental inteiramente casualizado, em esquema fatorial 4x5 (concentrações de revestimento x períodos de armazenamento), em quatro repetições. Os resultados foram submetidos à análise de variância, e a comparação das médias, pelo teste de Tukey, a 5% de probabilidade. O revestimento à base de fécula de mandioca caracterizou-se como uma boa alternativa para manter a qualidade pós-colheita da manga 'Palmer' na concentração a partir de 2%, uma vez que reduziu a perda de massa dos frutos e manteve maiores os valores de firmeza, sendo eficiente também no retardo do desenvolvimento da coloração da casca dos frutos.Palavras-chave adicionais: biofilme; Mangifera indica L.; qualidade pós-colheita.

Application of biodegradable coatings on ‘Tommy Atkins’ mango for export

“…8B, which corroborates with [8]. However, as the L* brightness also correlates with increased fruit brightness, the control showed a substantial increase in carotenoid content between the eighth and tenth day, making fruit peel more yellow and with lighter tones [17]. Fruit pulp became more orange-red as a result of storage for all treatments, given the increase in a* value Fig.…”

“…9C, mainly 5% GEL/POT and 5% GEL/RIC. This effect may be related to the higher water content retained in the pulp, improving the reflection of the light incident [17].…”

Preservation of bananas coated with cassava starch and pectin

“…When the time effect ( Figure 1B) was analyzed, regardless of the treatment used, the bananas lost mass linearly during the twelve days of storage. This demonstrates that the coatings tested are not water vapor-proofed barriers, as verified by Oshiro et al (2012) for 'Pedro Sato' guavas coated with gelatin and chitosan, and Costa et al (2016) evaluating the quality of 'Palmer' mangoes coated with solutions of cassava starch at 1, 2 and 3%.…”