Abstract
The profile of lipophilic compounds was studied in oils obtained from seeds of five dessert and six crab apple cultivars. Apple seeds were collected from by-products generated during the preparation of fruit salads and in juice pressing. The oil yield in the apple seeds ranged from 12.06 to 27.49g/100g dry weight base. The average level of oil obtained from crab apple seeds was higher by 30% when compared to dessert apple seeds. The fatty acid composition was dominated by palmitic acid (5.78–8.33%), oleic acid (20.68–29.00%) and linoleic acid (59.37–67.94%). Among the six detected phytosterols β-sitosterol was predominant (51–94%). Total phytosterol concentration as well as squalene varied in different apple seed oils and amounted to 1.13–7.80 and 0.01–0.34mg/g, respectively. Four significant correlations were found between oil yield and contents of oleic acid (r=0.822, p<0.01), α-linolenic acid (r=0.919, p<0.0001), β-sitosterol (r=0.931, p<0.0001) and total phytosterols (r=0.901, p<0.001) in apple seed oils.
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