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2019 ASHS Annual Conference

Effect of 1-Methylcyclopropene Treatment on Fruit Quality Attributes and Antioxidant Metabolism in Cold Stored ‘Gamhong’ Apples

Thursday, July 25, 2019
Cohiba 5-11 (Tropicana Las Vegas)
Jung-Geun Kwon, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Jingi Yoo, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Nay Myo Win, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Ha-ram Jung, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Seon-Hyang Kim, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Dae Hyun Kim, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
Jinwook Lee, Chung-Ang University, Department of Plant Science and Technology, Anseong, Korea, Republic of (South)
Soon-Il Kwon, National Institute of Horticultural and Herbal Science, Apple Research Institute, Gunwi, Korea, Republic of (South)
In-Kyu Kang, Kyungpook National University, Department of Horticultural Science, Daegu, Korea, Republic of (South)
This study was carried out to evaluate the effect of 1-methylcyclopropene (1-MCP) treatment on fruit quality attributes and antioxidant metabolism in cold-stored ‘Gamhong’ apples. 1-MCP (1 μL·L-1) was applied for 18 hr after harvest and stored at 0℃ for up to six months. Flesh firmness, titratable acidity (TA), and soluble solids content were higher in 1-MCP treated fruit than in control fruit during cold storage. The increase in weight loss was significantly delayed by 1-MCP treatment, compared with control. Internal ethylene concentration (IEC) and ethylene production were highly increased in untreated fruit, compared with 1-MCP treatment. Total phenolic content (TPC) and total flavonoid content (TFC) were higher in control fruit than 1-MCP treated fruit. Total anthocyanin content (TAC) was higher in control fruit than 1-MCP treated fruit at the end of storage. DPPH and ABTS radical scavenging activities were higher in control fruit than in 1-MCP treated fruit at the end of storage. The correlation responses were more significant in control than in 1-MCP treatment. Firmness was always positively correlated with TA, but negatively with weight loss, IEC, and ethylene production rate. TA was negatively correlated with TPC, TFC, and TAC. However, weight loss was positively done with TPC, TFC, and TAC. Overall, the results suggested that 1-MCP treatment should be highly necessary as postharvest treatment for apple storage. Nevertheless, the effectiveness of 1-MCP treatment on antioxidant activities was complicated during cold storage. Financial support for this research was supported by a grant from 2017 Research Fund (PJ01245502) of Rural Development Administration, Republic of Korea.
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