Effect of post-harvest treatments on black spotting, infestation and organoleptic quality of mango cv. Amrapali during ambient storage

Abstract

This experiment was conducted during the year 2011–12 to study the effect of post-harvest hot water treatment and wax coating on occurrence of black spotting and infestation of insects like fruit fly during storage of Amrapali mango fruits under ambient condition. Black spots on fruits skin during ripening and storage are mainly due to the infection of Anthracnose and Stem-end rot are the major post-harvest diseases of mango fruits. In the present experiment, fruits were harvested at green mature stage and treated with four post-harvest treatments, viz., T1 (Hot water treatment at 52 ± 2°C for 5 minutes), T2 (Wax coating of 6% wax emulsion), T3 (Hot water treatment + Wax coating) and T4 (Water was taken as control). Treated fruits were packed in CFB boxes and stored under ambient condition. Observations were recorded at 3 days intervals during storage. Results revealed that the treatment of (HWT + Wax coating) was found to be best to minimize the black spotted and infested fruit per cent in mango during storage. Treated fruits retained the maximum fruits firmness and highest organoleptic score with acceptability up to 15 days, while 6 days in untreated fruits during the ambient storage. Treatments of (HWT +Wax coating) was also improved the shelf life of mango fruits up to 15 days with lowest PLW per cent against only 9 days was recorded in control.