Abstract
In this study, oil content and fatty acid composition of apple and pear seeds were analyzed. Apple (cv. red Fuji) seeds and pear (cv. Dangshan Suli) seeds contained a large quantity of oils (apple seed oil, 291 g/kg seed; pear seed oil, 179 g/kg seed). Eleven types of fatty acids were identified in apple and pear seed oil; c16:0, c16:1, c18:0, c18:1, c18:2, c18:3, c20:0, c20:1, c20:2, c22:0, and c24:0. The dominant fatty acids in apple seed oil were c18:1 (43.03 g/100g oil), c18:0 (26.47 g/100g oil), and c16:0 (5.60 g/100g oil). The same three fatty acids were also dominant in pear oil (c18:1, 56.80 g/100g oil; c18:0, 20.28 g/100g oil; and c16:0, 6.39 g/100g oil). Compared with previous research, an additional six fatty acids were found in apple seed oil (c16:1, c18:3, c20:1, c20:2, c22:0, and c24:0). Unsaturated fatty acids comprised 70.598 g/100g oil of apple seed oil and 77.846 g/100g oil of pear seed oil. In conclusion, apple seeds and pear seeds contain a large quantity of oil comprised of many fatty acids, especially unsaturated fatty acids. These data suggest that apple and pear seeds could be new sources of edible oils.
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