High oleic sunflowers
In high oleic sunflower (short-HO-sunflower) is, for varieties of sunflower ( Helianthus annuus ) with an oleic acid fraction of about 75-93% of the fatty acid residues in the triglycerides . They were bred the conventional way from a mutant found in Russia. The varieties currently being cultivated were not genetically modified.
Usage history
There has been a notable cultivation in Europe since the mid-1990s. In Germany, varieties with up to 93% oleic acid are now grown. The oil from the varieties with 75–90% is mainly used in nutrition. Due to the high proportion of monounsaturated fatty acid, oleic acid (C 18: 1), and the low proportion of polyunsaturated fatty acids , this oil is characterized by very high heat and oxidation stability . Therefore it is very suitable for the hot kitchen, for frying and deep-frying . The service life in the deep fat fryer is significantly longer and it practically does not get rancid.
Oil from types with over 90% oleic acid is mainly used in the technical area of the chemical industry . Due to its extremely high oxidation and heat stability, it is particularly suitable for the production of lubricants. Hydraulic and special oils made from HO oils are clearly superior to most comparable mineral oil-based products. High oleic sunflower oil is also used in the cosmetics industry.
Examples of the fatty acid pattern in triglycerides
80 HO oil: | 90s HO oil: | ||||||||||||||||||||||||||||||
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further reading
- W. Lühs, W. Fried : Cultivation recommendations for high oleic (HO) sunflowers in Germany. 3rd edition, Justus Liebig University Giessen 1998, ( page no longer available , search in web archives: full version ).
- W. Sauermann, Jutta Gronow: EU variety trial high-oleic sunflowers 2006. ( Page no longer available , search in web archives: Download ).
- Volker Hahn: Studies to improve the sclerotinia resistance of 'high oleic' sunflowers. University of Hohenheim, 2003. ( Page no longer available , search in web archives: project description ).
Web links
- Portrait atpflanzenöl.ch ( memento from January 1, 2012 in the Internet Archive )
- Reinhold Vetter, Jürgen Maier: Sunflowers with a high oleic acid content - good prospects in a niche market! ( Memento from February 11, 2013 in the web archive archive.today ) Institute for Environmentally Friendly Land Management, Müllheim