Effect of Post Harvest Treatments on Biochemical Changes of Sapota cv. Kalipatti at Ambient Storage

An investigation was carried out to know the effectiveness of post-harvest dip treatments with skin coatings (1.5% chitosan, 6% wax), chemicals (salicylic acid 0.01% and calcium nitrate 2.0%), plant extracts (Aloe vera gel 20%) and bio-agents (Trichoderma harzianum @ 10 g/l) on biochemical changes of sapota fruit cv. Kalipatti at ambient storage. Post harvest dipping of fruits in 6 per cent wax (T₃), 20 per cent Aloe vera gel (T₅), 2 per cent calcium nitrate (T₄) and 0.01 per cent salicylic acid (T₂) for 5 minute was found to delay increasing trend with respect to TSS and sugars of the sapota fruits was noticed. The treatment salicylic acid (0.01%), wax (6%), calcium nitrate (2%) and Aloe vera gel (20%) showedminimum loss of titratable acidity and ascorbic acid than T₇ (control) and T₆ (Trichoderma harzianum 10 g/l).