A method of concentration estimation of trienes, tetraenes, and pentaenes in evening primrose oil
Bogdan Smyk , Piotr Zbigniew Wieczorek , Zadernowski Ryszard
AbstractThere is no simple method available to estimate the concentration of conjugated fatty acids (CFA) with more than two double bonds in plant oils, because there are no commercially available complete sets of CFAs standards needed for such analysis. This paper presents such a method based on the absorption and fluorescence spectra of available CFAs standards and a computer program calculation. Using this method, the concentrations of the a-eleostearic acid (conjugated trienoic acid (ELA) 8.8 � 104 mol/L) and cis-parinaric acid (conjugated tetraenoic acid (PnA) 3.5 � 105 mol/L) in evening primrose oil were estimated. The accuracy of the calculation method is around 10%. Practical applications: This is the first report about the existence of CFAs in evening primrose oil. The described method estimates the total concentration of trienes, tetraenes, and pentaenes in evening primrose oils without using HPLC or other analytical methods. These CFAs are important from a health point of view. They are not synthesized by the human body. Therefore, plant oils containing these fatty acids (FA) are very valuable. Knowledge about the concentrations can be utilized to prepare a mixture of the plant oils with a favourable n-3 to n-6 FAs ratio and in addition containing CFAs.
|Journal series||European Journal of Lipid Science and Technology|
|Publication size in sheets||0.5|
|Keywords in English||: Conjugated fatty acids / Evening primrose oil / Stripped oil / Tetraene / Triene|
|Citation count*||4 (2018-06-18)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.