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Scientific classification of ripening period and development of colour grade chart for Indian mangoes (Mangifera indica L.) using multivariate cluster analysis

2015; Elsevier BV; Volume: 193; Linguagem: Inglês

10.1016/j.scienta.2015.05.031

1879-1018

V. Eyarkai Nambi, K. Thangavel, D. M. Jesudas,

Phytochemicals and Antioxidant Activities

• The available colour charts are prepared purely based on external appearance, and no scientific methodology were employed, internal & external quality parameter were not considered. • Scientific way of classification of ripening period were done for indian mangoes and commercially important colour chart was prepared. • Ripening period of Indian mangoes were classified into five different stages viz. unripe, early ripe, partially ripe, ripe, over ripe based on internal and external quality parameters. • Colour grade chart with internal and external quality parameters were developed for Alphonso and Banganaplli mangoes. • Colour grade chart is very essential for mango preprocessors, packhouses, and pulping industries. • The optimum stage suggested are stage 1 and 2 for fresh produce packaging and stage 4 for pulping. The available colour charts are purely based on external appearance, internal and external quality parameters were not considered and no scientific methodology were employed for classification. This paper describes the study carried out to classify the ripening period of mango into different stages and to develop a colour grade chart for Indian mangoes. The physico-chemical properties, external and internal colour values and textural characteristics were measured throughout the ripening period of two Indian mango varieties viz. Alphonso and Banganapalli. PCA along with Hierarchical clustering method were used and the ripening period of mango fruits was classified into five stages viz. unripe, early ripe, partially ripe, ripe and over ripe. Based on these stages, a colour grade chart was developed along with physico-chemical, textural and colour values for both varieties. The developed colour chart can be used as a useful rapid, non-destructive grading tool at mango pack houses and processing industries.