The thesis focuses on the technology and process of producing oils from seeds of lesser known fruit species (hazel, royal walnut, black and red currant, rose hip, almond, plum, apricot and peach). It has been found that the Soxhlet method is more efficient in terms of oil yield (hazel 68% / walnut 66% / peach 44% / plum 36% / apricot 31% / currant 14% / rose 9%) than cold pressing by a screw press (hazel 62.7% / walnut 54.4% / almond 43% / plum 35% / apricot 28% / peach 27% / rose 5% / currant 2%). (GC method) The most represented fatty acids in all oils are oleic acid (18,54 - 85,77%), linoleic acid (8,13 - 59,46%) and palmitic acid (3,75 - 6, 76%). (CHASO method) Detection of minerals (C, H, N, O, S) with the highest content of C (67.4 - 85.3%)> H (10.3 - 13.5%)> O (1.5 - 22.4%)> N 0.04-0.4%). The content of elements (Fe, Ca, Cu and Mg) was found below the detection limit (ETA-AAS).
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:426549 |
| Date | January 2019 |
| Creators | Horníková, Gabriela |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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