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The Journal of Horticultural Science & Biotechnology
Vol. 80 No: 4
Title:
Studies on elevated temperature, short-term storage of 'Sunrise' Summer apples using 1-MCP to maintain quality
Authors:
PETER M. A. TOIVONEN and CHANGWEN LU
pp: 439-446
Abstract:
The work presented in this paper was initiated to evaluate the potential for short-term storage at elevated temperatures for the Summer apple cv. īSunrise`, using 1-methylcyclopropene (1-MCP) to control ripening. Fruit were harvested three times at 1 week intervals, with the first harvest being that which the industry normally considers acceptable for commercial harvest. A treatment concentration of 100 nl l-1 1-MCP was sufficient to provide maximum inhibition of ripening when fruit were held at 15° - 22°C. If fruit were harvested at the current, commercially recommended, optimal harvest maturity, quality benefits were consistent from year-to-year. However if fruit were harvested at later maturities there were year-to-year differences in ripening inhibition with 1-MCP treatment. Two sequential weekly treatments with 1-MCP extended the effectiveness of the treatment in maintaining firmness and titratable acidity. When īSunrise` apples were treated and stored at 13°C, the effects of 1-MCP were significantly impaired.
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