The changes in physico-chemical compositions of 'Irwin' mango fruit after postharvest treatments under low temperature storage.
Wongmetha O., Ke LihShang, Liang YuShen
Author Affiliation: Chiang Mai Royal Agricultural Research Center (CMRARC), Horticulture Research Institute (HRI), Department of Agriculture (DOA), Hang Dong, Chiang Mai 50230, Thailand.
Thai Journal of Agricultural Science 46 : 11-19
Abstract : The changes in physico-chemical compositions after postharvest ripening of mango fruit can effectively inhibit with 1-methylcyclopropene (1-MCP) application, chitosan coating and modified atmosphere packaging (MAP) under low temperature storage. 'Irwin' mango fruit were treated with 5 µL L-1 1-MCP for 12 h, dipped with 0.5% chitosan coating, packed in polyethylene (PE) bags and untreated (control) thereafter stored at 10°C. Application of 1-MCP delayed firmness loss, titratable acidity (TA), inhibited increase of electrolyte leakage (EL) during storage. Moreover, 1-MCP prolonged storage life of mango for 32 days which was a 5 day extension or 19% when compared with the control. The PE bags treatment reduced weight loss in comparison with other treatments. Both 1-MCP and chitosan treatments delayed the increase of pH and all treatments reduced fruit decay. In addition, 10°C did lead to chilling injury (CI) symptoms in mango in any of the treatments. Therefore, 1-MCP application can inhibit ripening, maintain physico-chemical compositions, postharvest quality and prolong the storage life of mango during storage low temperature condition in order to expand marketability and the potential for export.