Original scientific paper
QUALITY OF OILS FROM MARKET
Lucie Rusníková
; University of Veterinary and Pharmaceutical Sciences Brno, Faculty of Veterinary Hygiene and Ecology, Brno, Czech Republic
Eva Straková
; University of Veterinary and Pharmaceutical Sciences Brno, Faculty of Veterinary Hygiene and Ecology, Brno, Czech Republic
Željko Mikulec
; Veterinarski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Abstract
The aim of this study was to evaluate the quality of selected oils from the market in the Czech Republic by monitoring the fatty acids content during storage.The work was focused on oils widely used in animal nutrition as well as dietary supplements. Chosen oils: rapeseed, soybean, linseed and milk thistle were purchased in a health food store, salmon oil derived from a feed store. The fatty acids content in oils and changes in the composition during storage under various conditions were monitored. Fatty acids were detected in oils by gas chromatography with flame ionization detector (GC-FID). Individual fatty acids were divided into groups: saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA). SFA were most frequently found in salmon oil, most of PUFA was found in linseed oil and rapeseed oil contained the most of MUFA (15.4-16.6%, 77.3-77.5%, 64.5-64.8%,respectively). Oils stored in various conditions and storage periods did not show significant changes in the fatty acids composition. Mentioned oils are characterized and known by some fatty acids, although results show that they do not always have
to be included in the expected quantities.
Keywords
Fatty acid; Rapeseed; Soybean; Linseed; Milk Thistle; Salmon
Hrčak ID:
102433
URI
Publication date:
17.5.2013.
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