Vol. 11, Issue 3 (2022)

Author(s):
Maruti Shankhu, Mallikarjun G Awati, Kavya K, Jagadish SL and Bhuvaneshwari G

Abstract:
Polyamines are the natural compound that plays a pivotal role in postharvest life of fruits and vegetables. The study was conducted with an objective to investigate the effect of post-harvest application of polyamines in different concentration on biochemical quality parameters and shelf life of papaya fruits during ambient storage (33-36 ^oC). Papaya fruits are treated with different concentration of polyamines i.e., T₂-0.50mM Spermine, T₃- 1.0mM Spermine, T₄- 1.5mM Spermine, T₅- 0.50 mM Spermidine, T₆- 1 mM Spermidine, T₇- 1.5mM Spermidine, T₈- 2 mM Putrescine, T₉- 3 mM Putrescine, T₁₀- 4 mM Putrescine and T₁-Control. Among the treatments, papaya fruits treated with 4 mM of Putrescine (T₁₀) recorded significantly minimum total soluble solids (10.90 ^oB), ß-carotene (0.76mg/100g) and maximum titratable acidity (0.34%), total phenols (180.92mg GAE/g) and shelf life (9 days) and sensory scores (overall acceptability- 8.46). Hence, it is confirmed from the study that the Putrescine at 4 mM (T₁₀) was found to be effective in delaying the biochemical and ripening of papaya fruits and maintaining the organoleptic qualities for long time.