ISHS Acta Horticulturae 1396: VII International Conference Postharvest Unlimited
Inhibition of the ripening process in ‘Nam Doc Mai No.4’ mango fruit using 1-methylcyclopropene (1-MCP) after irradiation |
| Authors: | P. Wichitkunanan, S. Jetawattana, H. Shamsub, P. Chaiprasart |
| Keywords: | gamma ray, generic dose, fumigation, shelf-life extension |
| DOI: | 10.17660/ActaHortic.2024.1396.81 |
| Abstract:
The use of ionizing irradiation has been demonstrated as an effective commercial phytosanitary treatment prior to export to the international market in the US and Australia. Quality deterioration of irradiated mango is an inherent aspect of the advancement in senescence and loss in fruit quality during storage. 1-methylcyclopropene (1-MCP) was used for extending shelf life and quality, by delaying ripening through downregulating the ethylene response. In this study, application of 1-MCP after irradiation using gamma ray was studied for efficacy in delaying fruit ripening of ‘Nam Doc Mai No.4’ mango. The irradiated mangoes were exposed to 0, 500, and 1,000 ppb 1-MCP for 12 and 24 h, and stored at 13±2°C, 80-90% RH. It was found that 1-MCP treatment effectively maintained peel color (L*, a*, and b*) fruit firmness, and total soluble solids and titratable acidity ratio. In addition, irradiated mangoes were treated with 1-MCP, delaying respiration rate and ethylene production. 1-MCP treatment at 500 and 1,000 ppb for 12 and 24 h had a lower disease incidence by below 20% throughout storage time. 1-MCP treatment after irradiation is directly related to ripening process of mango, resulting in an extended storage life of up to 24 days. These results suggest that the effective delay of ripening of mango fruit was found in 1-MCP treatment after gamma radiation for up to 24 days. | |
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