Effects of postharvest treatments on shelf life and quality of Kesar mango fruits during storage.
Dhemre J. K., Waskar D. P.
Author Affiliation: Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri - 413 722, India.
Journal of Maharashtra Agricultural Universities 29 : 159-163
Abstract : Fruits of mango cv. Kesar untreated (control) or treated with 6% waxol, 6% waxol + 0.1% carbandazim, 6% waxol + 0.2% captan, 0.1% carbendazim or 0.2% captan were stored at room temperature (24.18-30.57°C and 47.50-74.00% relative humidity o RH), stored in a cool chamber (21.36-23.15°C and 87.00-91.50% RH), precooled at 10°C for 12 h and stored at 10°C and 90-95% RH (cold storage), or directly subjected to cold storage without precooling. The contents of total soluble solids (TSS), reducing sugar and total sugar; physiological weight loss (PWL); and rotting percentage increased with the increase in storage period. Fruits treated with waxol + carbendazim exhibited a slow increase in TSS, reducing sugar and total sugar contents, and a slow reduction in acidity during storage. Changes in these parameters were most abrupt in fruits stored at room temperature. Fruits treated with waxol + carbendazim, precooled, then subjected to cold storage recorded the longest shelf life (50 days) compared to fruits that were not precooled (46 days), and fruits stored in a cool chamber (26 days) or room temperature (20 days). The rate of increase in PLW and rotting was also slowest in fruits treated with waxol + carbendazim. The organoleptic rating in terms of colour, flavour and texture was highest for fruits treated with waxol + carbendazim then stored at room temperature. Fruit spoilage at room temperature was caused by Aspergillus niger, Colletotrichum gloeosporioides [Glomerella cingulata], Rhizopus stolonifer and Botryodiplodia theobromae; under cold storage, the causal pathogens of precooled and unprecooled fruits were Rhizopus stolonifer and Fusarium oxysporum.