PHYTOHORMONES AND SIGNAL MOLECULES FOR SHELF LIFE IMPROVEMENT OF BANANA FRUIT SAHITHYA B.
Loading...
Date
2014-06
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE, BAGALKOT)
Abstract
An investigation was carried out during the year 2013-14 at College of Horticulture, Bagalkot, University of Horticultural Sciences, Bagalkot, to evaluate “Phytohormones and signal molecules for shelf life improvement of banana fruit”. The fully matured, freshly harvested and healthy banana fruits were subjected to post harvest treatment with phytohormones and signal molecules (25ppm IAA, 100ppm IBA, 150ppm GA3, 0.5gL-1 kinetin, 10μM ABA, 0.5 and 1mM SNP, 0.1% chitosan, 100μM salicylic acid and 1mlL-1 ethrel) for 3 hours, kept at ambient condition and monitored regularly for changes in texture, colour and weight loss. Biochemical estimations were done for reducing sugar, protein, titratable acidity, total carbohydrate and β-carotene at four days interval. The untreated fruits showed shelf life of 16 days. Whereas, treated with 150ppm GA3 were able to keep for 24.33 days. Thus, extended the shelf life for 8 days over control with the minimum PLW (4.58%), maximum fruit firmness (60.33N), maximum titratable acidity (0.406%), highest score for colour, appearance, taste and flavour and overall acceptance, maximum total carbohydrates (30g/100g), slow decline in the carbohydrate content, slow increase in the reducing sugar percentage and delayed colour changes with the maximum green life (17.00days). The treatment with SNP 1mM exhibited the maximum yellow life (7.67days) and finally extended the shelf life up to 23 days. Fruits treated with 0.5gL-1 kinetin recorded the maximum total protein (16.40mg/g) with 21 days storage life. The maximum β-carotene (410.30μg/100g) was found in 100μM salicylic acid treated fruits with the shelf life of 20.33days. The fruits treated with ethrel 1mlL-1 recorded the highest percentage of reducing sugar (11.98%). However, the minimum green life (3 days) and shelf life (8days) was recorded in the same. Among the treatments, 150ppm GA3, 1mM SNP followed by 25ppm IAA and 0.5 gL-1 kinetin were found the best for extending shelf life of banana fruit.