Kamlolenic acid and other conjugated fatty acids in certain seed oils

The seed oil of Tragopogonporrifolius L. was found to contain about 4% of conjugated diene hydroxy fatty acids, identified as 9-hydroxy-10,12- and 13-hydroxy-9,11-octadecadienoic acids. On dehydration, the products were 8,10,12- and 9,11,13-octadecatrienoic acids. The diene acids were cis,trans or trans,cis and the triene acids were judged to be all-trans.The conjugated triene acid of Calendulaofficinalis L. seed oil was isolated and identified as trans,8:trans, 10:cis,12-octadecatrienoic acid by spectral analysis, by the structure of the maleic anhydride adduct, and by identification of degradation products. All-trans-8,10,12-octadecatrienoic acid was found to react with maleic anhydride at both the 8,11 and 10,13 positions.

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Identity and configuration of conjugated fatty acids in certain seed oils

Lipids ◽

10.1007/bf02531923 ◽

1969 ◽

Vol 4 (2) ◽

pp. 89-92 ◽

Cited By ~ 12

Author(s):

C. Y. Hopkins ◽

M. J. Chisholm ◽

J. A. Orgodnik

Keyword(s):

Fatty Acids ◽

Seed Oils ◽

Conjugated Fatty Acids

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CONJUGATED FATTY ACIDS IN SOME CUCURBITACEAE SEED OILS

Canadian Journal of Biochemistry ◽

10.1139/o67-125 ◽

1967 ◽

Vol 45 (7) ◽

pp. 1081-1086 ◽

Cited By ~ 18

Author(s):

Mary J. Chisholm ◽

C. Y. Hopkins

Keyword(s):

Fatty Acids ◽

Distribution Pattern ◽

Eleostearic Acid ◽

Seed Oils ◽

Punicic Acid ◽

Conjugated Fatty Acids ◽

Telfairia Occidentalis

Punicic acid was identified as a component of the seed oils of Cyclanthera explodens (26%) and Cayaponia africana (38%). α-Eleostearic acid was identified in Momordica dioica (55%) and its occurrence in Telfairia occidentalis (7 and 12%) was confirmed. Evidence of conjugated acids was noted in Fevillea peruviana and Bryonia alba. The oils of four other species of Cucurbitaceae had no conjugated acids. The distribution pattern of fatty acids in this family is discussed.

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GC Analysis of Seven Seed Oils Containing Conjugated Fatty Acids

Separations ◽

10.3390/separations8040051 ◽

2021 ◽

Vol 8 (4) ◽

pp. 51

Author(s):

Robert Goldschmidt ◽

William Byrdwell

Keyword(s):

Fatty Acids ◽

Fatty Acid ◽

Methyl Esters ◽

Seed Oils ◽

Natural Occurrence ◽

Conjugated Fatty Acids ◽

Flame Ionization ◽

Two Samples ◽

Poly Ethylene ◽

Multiple Species

The fatty acid compositions, including isomer compositions, of seven seed oils containing conjugated fatty acids (CFA) were determined. Seed oils were extracted using a modified Folch extraction, converted to fatty acid methyl esters, and analyzed by gas chromatography (GC) with mass spectrometry and flame ionization detection. The MS detector was operated in positive-ion chemical ionization mode using methane reagent gas. GC was performed using two columns providing different retention characteristics: a poly(ethylene glycol) column and a more polar biscyanopropyl column. The complimentary information provided by the two columns was crucial to peak identification in several cases. The major CFA species in the samples are well known but all contained lesser amounts of additional CFA that have not been widely reported. All samples contained multiple species of conjugated linolenic acid, and two samples also contained small amounts of conjugated linoleic acid. The seed oils of Jacaranda mimosifolia and Calendula officinalis were found to contain 8c,10t,12t-18:3, the natural occurrence of which has only been recently reported in some other samples. The seed oil of Impatiens balsamina has been reported to contain four conjugated 18:4 species, and we present evidence for a fifth conjugated 18:4 isomer.

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