IMPACT INJURY DIAGNOSIS IN MANGO THROUGH STARCH DEGRADATION INDEX

Authors

  • Francisco de Assis de Sousa Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
  • Railene Hérica Carlos Rocha Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
  • Tádria Cristiane de Sousa Furtunato Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
  • José Franciraldo de Lima Biotechnology Sector, Institute Fazenda Tamanduá, Santa Teresinha, PB.

DOI:

https://doi.org/10.1590/1983-21252017v30n130rc

Keywords:

Mangifera indica L.. Mechanical injury. Maturation.

Abstract

This study aimed to evaluate the use of starch degradation index (SDI) in the diagnosis of areas of impact injuries in 'Tommy Atkins' mango, in different maturation stages. The experiment layout was a fully randomized factorial design (5 x 2), represented by five maturation stages and two handlings, with and without impact, with four replicates. SDI was determined through a subjective scale of scores indicating mango pulp darkened areas by reaction with iodine-potassium iodide solution. Subsequently, these scores were correlated with physicochemical quality variables. The results showed no influence of impact on fruit quality, in any of the studied maturation stages. Moreover, soluble solid contents increased throughout maturation stages, regardless of whether the fruits suffered impact or not. As a result, SDI is unsuitable to indicate fruit impact injury. However, there is a good correlation between SDI and pulp color, vitamin C, pH, titratable acidity, soluble solids, SS/ TA ratio and non-reducing sugars.

Author Biographies

  • Francisco de Assis de Sousa, Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
    Engenheiro Agrônomo, formado na UFCG.
  • Railene Hérica Carlos Rocha, Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
    Professora, doutora em Fitotecnia. Universidade Federal de Campina Grande, Centro de Ciências e Tecnologia de Alimentos, Unidade Acadêmica de Ciências Agrárias.
  • Tádria Cristiane de Sousa Furtunato, Center of Agrifood Science and Technology, Universidade Federal de Campina Grande, Pombal, PB.
    Engenheira Agrônoma, mestranda em Horticultura Tropical, UFCG, CCTA.

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Published

02-12-2016

Issue

Section

Technical Note