Seed Oil Fatty Acids of Mongolian Compositae: The trans-Fatty Acids of Heteropappus hispidus, Asterothamnus centrali-asiaticus and Artemisia palustris

Abstract

SummarySeed oils from the Compositae plant family are known to contain a variety of unusual fatty acids. Subsequent to the recent discovery of c-linolenic acid in Saussurea and Youngia, further Mongolian Compositae species were investigated for their seed oil fatty acid composition. A number of D3trans-fatty acids (16 : 1D3t, 18 : 1D3t and 18 : 3D3t, 9c, 12c) were found in the seed oils of Heteropappus hispidus and Asterothamnus centrali-asiaticus. The latter fatty acid, but not the trans-monoenes, was also found in one species of Artemisia. These unusual fatty acid isomers were characterized by capillary gas-liquid chromatographic (GLC) separations in combination with other chromatographic techniques (analytical thin layer chromatography, TLC and preparative argentation TLC), and infrared spectrocsopy (IR). Their identity was further confirmed by co-chromatography with other seed oils known to contain these trans-fatty acids. The fact that within the Compositae plant family there are apparently two or three distinct groups of genera containing D3trans-fatty acids is discussed.

Occurrence of a novel cis,cis,cis‐octadeca‐3,9,12‐trienoic (Z,Z,Z‐octadeca‐3,9,12‐trienoic) acid in Chrysanthemum (Tanacetum) zawadskii herb. (Compositae) seed oil

“…For some other genera of Asteraceae, 3-trans mono-, di-, or triunsaturated C 16 or C 18 FA have been reported, but cis-3 unsaturated isomers have never been reported as seed oil components (1)(2)(3)(4).…”

“…(1)(2)(3)(4). This gave us evidence that double bonds in unsaturated FA of the oil have the all-cis configuration.…”

“…Unusual FA, such as ∆3 trans (1)(2)(3)(4), ∆5 cis (5), ∆6 cis (6,7), conjugated (8), acetylenic (9)(10)(11), epoxy (12), and hydroxy (13) acids, were previously found in different genera of this family, and these have been reviewed elsewhere (14)(15)(16).…”

Flax species polymorphism for isozyme and metabolic markers

“…Estimation of this parameter may serve as a reliable "fingerprinting" for chemotaxonomy of gymnosperms [15]. The amount and proportions of various fatty acids in oil are genetically determined but depend on the duration of seed storage and conditions of plant cultivation.…”

Chemical compositions of essential oils from two Artemisia species used in Mongolian traditional medicine

“…The increasing importance of essential oils in various domains of human life (pharmacy, cosmetics, food and beverage industries), especially the essential oil rich in β-ocimene, has attracted researchers interests to the essential oil A.palustis from the Mongolian flora. There are results described about seed oil of A.palustis growing in Mongolia [9]. However, its essential oil has not been studied yet.…”