Browsing by Author "VARALAKSHMI, S."
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ThesisItem Open Access EFFECT OF POTASSIUM PERMANGANATE (KMnO4) INSERTS ON POSTHARVEST MANAGEMENT OF PAPAYA (Carica papaya L.)(University of Horticultural Sciences, Bagalkot, 2015-07) VARALAKSHMI, S.; H.C., KRISHNA; K.N., SREENIVAS; C. K., NARAYAN; B., FAKRUDIN; B. M., RAMKRISHNAPapaya (Carica papaya L.) is one of the popular fruit crops of tropics. Fruit being climacteric and highly perishable in nature. Harvest and postharvest losses are reported together 7.36 per cent. To reduce these losses and to extend the shelf life of the fruits, a study was conducted entitled “Effect of potassium permanganate (KMnO4) inserts on postharvest management of papaya (Carica papaya L.)” under ambient condition with temperature range of 270 C to 310 C and 50 to 66% relative humidity at Department of Postharvest Technology, College of Horticulture, UHS Campus, Bengaluru during the academic year 2015-16. Experiment was carried out to observe the effect of KMnO4 inserts on papaya fruit. Fruits were harvested at stage-2 and treated with ethylene oxidizer potassium permanganate at (1, 2 and 3 %) with the inserts viz., paper, embedded sheet, vermiculite and clay along with a set of control. Among 13 treatments, KMnO4 treated fruits with embedded paper @ 3 per cent recorded positive results compared to control and other treatments for the parameters which enhance the shelf life of fruit such as lower fruit respiration rate (0.10 – 0.04 mg CO2 kg-1 h-1), retained maximum colour (1.67-4.71), lower PLW (1.35-2.81 per cent), higher total soluble solids (10.10 0B), higher ascorbic acid (60.34 mg 100 g-1), retained higher β-carotene content (0.76 mg 100 g-1) and decreased firmness (1.7 fold) at the end of the experiment. The KMnO4 treated fruits showed significantly higher shelf life of 9 days compared to control (7 days).