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  • Author or Editor: C. M. C. Yuen x
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Phorone reduced bitter pit of apples during 4 seasons. The degree of control varied between cultivars and seasons. The study was carried out in 3 Australian states and New Zealand and involved ‘Cox's Orange Pippin’, ‘Golden Delicious’, ‘Granny Smith’, and ‘Twenty Ounce’. The apples were held in sealed or unsealed polyethylene bags, and the chemical was placed in small containers among the fruit or was injected into the core. Phorone was as effective in reducing bitter pit as a postharvest dip in 4% (w/w) calcium chloride, but it sometimes induced an off flavor. Chemical names used: 2,6-dimethyl-2-5-heptadien-4-one (phorone).

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