Variation in Lipid Composition of Apples in Relation to Watercore

in Journal of the American Society for Horticultural Science
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  • 1 Fruit Laboratory, Beltsville Agriculture Research Center, Agriculture Research Service, U.S. Department of Agriculture, Beltsville, MD 20705

The glycolipids, phospholipids, and sterols were determined in normal and watercore-affected apple (Malus domestica Borkh. cv. Delicious). Fruit with watercore contained higher amounts of glycolipids, phospholipids, and sterols. The ratios of unsaturated to saturated fatty acids and (18:3) to (18:1 + 18:2) were lower in watercore-affected tissue than in normal tissue. The ratio of free sterols to phospholipids was higher, whereas the ratio of phosphatidylcholine to phosphatidylethanolamine was lower in watercore-affected apple. Membrane lipids were altered in watercore-affected fruit.

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