ISHS Acta Horticulturae 768: XXVII International Horticultural Congress - IHC2006: International Symposium on The Role of Postharvest Technology in the Globalisation of Horticulture
1-METHYLCYCLOPROPENE (1-MCP) FOR EXTENDING POSTHARVEST QUALITY OF 'CUIGUAN' PEARS (PYRUS PYRIFOLIA NAK.) |
| Authors: | Youhong Chang, Jing Lin, Zhimei Yan |
| Keywords: | Asian pear, ethylene, ripening, physiological disorders, firmness |
| Abstract:
‘Cuiguan’ pears were harvested at 80% ripe stage, treated with 1-MCP at 1 µl•L-1 for 15h at room temperature (25±2°C), and then stored at 20±2°C in unsealed plastic bags. Fruit firmness, ethylene production, TA, SSC and MDA were determined at 5-day intervals, and development of black skin was also noted during storage. Fruit treated with 1-MCP were firmer throughout storage compared with controls. Firmness was 4.75 kg cm-2 in fruit treated with 1-MCP on day 25 (last day of control), while only 4.02 kg cm-2 in controls. 1-MCP not only delayed the ethylene climacteric peak by 10 d but reduced ethylene production rate as well. The magnitude of the ethylene peak was 50% lower in fruit treated with 1-MCP than in control fruit. Soluble solids content and titratable acidity, in fruit treated with 1-MCP were higher and malonyl dialdehyde levels were lower than in control fruit during storage. 1-MCP was very effective in preventing the development of black skin. Black skin did not occur during storage in 1-MCP treated fruit, but it developed began appearing on control fruit after 15 d of storage. These results indicated that 1-MCP had a positive effect on maintaining postharvest shelf-life of ‘Cuiguan’ pear fruits. | |
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