ASSESSMENT OF NUTRITIVE VALUE OF PLANT OILS WITH HIGH CONTENT OF LINOLENIC ACIDS BASED ON THE COMPOSITION OF FATTY ACIDS, TOCOPHEROLS, AND STEROLS
Journal Title: Żywność. Nauka. Technologia. Jakość - Year 2011, Vol 18, Issue 2
Abstract
The objective of this study was to assess the nutritive value of plant oils with high content of linolenic acids based on the composition of fatty acids, tocopherols, and sterols. The following cold pressed plant oils were analyzed: flax oil, camelina oil, borage oil, and echium oil, and a refined oil of blackcurrant seeds. The content and composition of fatty acids, tocopherols, and sterols were determined. The oils examined were characterized by a considerable nutritional value owing to the high content of unsaturated fatty acids, especially polyenic acids (50 - 80 %), mainly belonging to an n-3 family. The oils of flax, echium, and camelina A are a good source of acids from the n-3 family. The optimal ratio (4:1) between the acids from the n-6 and n-3 families occurs in the blackcurrant seed oil. The oils of borage, echium, and blackcurrant seeds contain γ-linolenic and stearidonic fatty acids, which occur rarely and are highly valuable as regards their nutritive value. The blackcurrant seed oil is a significant source of vitamin E. A low Harris coefficient of flax oil, and, also, of camelina, borage, and echium oils prove that those oils should be enriched with vitamin E. The oils analyzed show a relatively low content of phytosterols, and, among them, β-sitosterol prevails.
Authors and Affiliations
Karol Mińkowski, Stanisław Grześkiewicz, Marzena Jerzewska
Keywords
Related Articles
- EP ID EP147618
- DOI 10.15193/zntj/2011/75/124-135
- Views 82
- Downloads 0
USE OF COMPUTER VISION SYSTEMS TO DETECT PSE DEFECT IN PORK MEAT
The objective of the research study was to determine the possibility of using computer vision systems (CVS) to detect a PSE defect in pork meat. The research material comprised 42 pork longissimus dorsi muscles obtain...
ANALIZA ZALEŻNOŚCI POMIĘDZY SPOŻYCIEM WYBRANYCH SKŁADNIKÓW MINERALNYCH A ICH ZAWARTOŚCIĄ WE WŁOSACH W WYBRANEJ GRUPIE PACJENTÓW Z PIERWOTNYM NADCIŚNIENIEM TĘTNICZYM
Nadciśnienie tętnicze jest jedną z najczęściej występujących chorób układu krążenia. Jednym z głównych elementów niefarmakologicznej prewencji i leczenia wysokiego ciśnienia tętniczego jest właściwy sposób żywienia. Wa...
DETERMINATION OF CORRELATIONS BETW EEN CONTENT OF MANGANESE IN NUTRIENT SOLUTION AND CONCENTRATION OF TRACE ELEMENTS IN TOMATO FRUITS ( LYCOPERSICON ESCULENTUM MILL.)
Manganese (Mn) is a metallic micronutrient showing oxidative properties and, concurrently, a heavy metal. This element causes the contents of Fe, Zn, and Cu in the fruits to decrease. The objective of the research was...
Ocena mikrobiologicznego zanieczyszczenia świeżej bazylii i mięty
Celem badań było określenie stanu mikrobiologicznego różnych odmian bazylii i gatunków mięty, bezpośrednio po zbiorze roślin. Badaniami objęto cztery odmiany bazylii pospolitej (Ocimum basilicum): ‘Fine Verde’, ‘Genovese...
CONTENT OF ELLAGIC ACID AND POLYMERIZED PROANTHOCYANIDINS IN PSEUDO FRUITS OF SELECTED ROSE SPECIES
Ellagic acid (EA) occurs in some plants in its free form, as a glycoside or as an ester. As an ester it occurs in hydrolysable tannins, which include ellagitannins (ET) and gallotannins. On top of the hydrolyzable tann...