Evaluation of physical properties of selected vegetable oils obtained by cold pressing
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Authors: | Magdalena Kachel-Jakubowska1, Agnieszka Sujak2 1Department of Machine Operation in the Food Industry, University of Life Sciences ul. Doświadczalna 44, 20-280 Lublin 2Department of Biophysics, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland |
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Abstract : | The aim of this work was to evaluate the physical properties of oils from winter rape, pumpkin and grape seeds in order to assess their potential as a source of functional oils. Seeds were analysed for water content, protein and fat. All the seeds met minimum requirements for technological quality. The effect of cold oil extraction on chemical compounds was studied in oils pressed from the above seeds. The properties of the oils were compared based on the lipid profiles, content of carotenoids, chlorophylls and tocopherols. The oxidation stability of the oils was estimated through the determination of the acid number, peroxide number and oxidation induction time. |
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Keywords : | vegetable oil; fatty acids; oxidation stability; fat; protein | ||||||||
Language : | english |