Abstract
The crude oils obtained from the kernels of apple (Malus spp.), plum (Prunus domestica L.), apricot (Prunus armeniaca L.), sweet cherry (Prunus avium L.), mandarin (Citrus mitis), peach (Prunus persica L.), sour cherry (Prunus cerasus L.) and grape (Vitis vinifera L.) fruits were examined for some of their physicochemical properties and fatty acid compositions. The total oil content of the kernels ranged between 18.5-39.5%. While grape (20.2%) and apple (18.5%) seeds show the lowest oil content, the highest oil content was found in peach (39.5%) and apricot (38.8%) kernels. The saponification number and unsaponifiable matter contents of the samples varied between 170-195 and 0.93-1.59, respectively. The refractive index values of plum (1.478 nD 20 °C) and apricot (1.475 nD 20 °C) kernel oils were higher than the values of other kernel oils. The specific gravity, iodine number, peroxide value, free fatty acid and total crude fat contents of the kernels varied between 0.901 and 0.960, 95 and 135, 1.87 and 3...
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