Abstract
There are changes in chemical and physical characteristics involved in the ripening of bananas. This study evaluated the changes in physico-chemical and nutritional characteristics of the "Xiêm" banana cultivar at the harvesting (unripe fruit) and ripe stages (ripe fruit). As the pulp to peel ratio and titrable acidity increased, the firmness decreased with an increase in ripening time. A significant increase in total polyphenol content and decrease in beta-carotene and vitamin C content was observed at climacteric peak during ripening. During ripening, the banana peel colour changed from green to yellow, the pulp softened, the flavour develops, and the moisture is lost. "Xiem" banana variety was fully mature after 7 and 22 days of storage at 28-30oC and 13-15oC, respectively. The correlation between various stages of ripeness and these properties were determined and the correlation coefficients were calculated. A very high coefficient of determination (r2 >0.937) was recorded between physical properties (pulp firmness/peel colour) and chemical properties (starch/sugar) of banana fruit with the stage of ripeness.
Highlights
Vietnam is blessed with large areas appropriate for banana growing
The banana fruit has minerals, vitamins, sugars that are beneficial in maintaining an ideal weight and balanced nutrition
Banana fruits were packed in plastic bags and kept at different temperatures (13-15oC and 28-30oC) until it has achieved stage-7 colour
Summary
The objective of this work was to assess the physical and chemical characteristics of fruits at two maturation stages, unripened and ripened
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