IMPACT INJURY DIAGNOSIS IN MANGO THROUGH STARCH DEGRADATION INDEX

• Autor(a) principal: Sousa, Francisco de Assis de
• Data de Publicação: 2016
• Outros Autores: Rocha, Railene Hérica Carlos, Furtunato, Tádria Cristiane de Sousa, Lima, José Franciraldo de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Caatinga
• Texto Completo: https://periodicos.ufersa.edu.br/caatinga/article/view/5356
• topic: Mangifera indica L.. Injúria mecânica. Maturação.; Mangifera indica L.. Mechanical injury. Maturation.

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.