Participation of thecis -12 ethylenic bond tocis-trans isomerization of thecis -9 andcis -15 ethylenic bonds in heated α-linolenic acid

1996 ◽  
Vol 73 (3) ◽  
pp. 327-332 ◽  
Author(s):  
Robert L. Wolff ◽  
Mohamed Nour ◽  
Corinne C. Bayard
Keyword(s):  
Linolenic Acid ◽  
Ethylenic Bond ◽  
Trans Isomerization

scholarly journals The hydrogenation of γ-linolenic acid by pure cultures of two rumen bacteria

1983 ◽  
Vol 216 (2) ◽  
pp. 519-522 ◽  
Author(s):  
P Kemp ◽  
D J Lander
Keyword(s):  
Linoleic Acid ◽  
Stearic Acid ◽  
Linolenic Acid ◽  
Enoic Acid ◽  
Rumen Bacteria ◽  
Gamma Linolenic Acid ◽  
Alpha Linolenic Acid ◽  
Trans Isomerization ◽  
Pure Cultures

Two species of rumen bacteria that have been previously shown to partially hydrogenate alpha-linolenic acid have been examined for their ability to hydrogenate gamma-linolenic acid. Free gamma-linolenic acid is hydrogenated in vitro to stearic acid by a rumen Fusocillus sp. (N.C.I.B. 11026), but only to cis, trans-octadec-6,11-enoic acid by a Butyrivibrio sp. The sequential hydrogenations are preceded by a delta 12-cis-delta 11-trans isomerization identical with that observed in the hydrogenation of alpha-linolenic acid and linoleic acid.

Dihomo-γ-Linolenic Acid in Patients with Atherosclerosis: Effects on Platelet Aggregation, Plasma Lipids and Low-Density Lipoprotein-Induced Inhibition of Prostacyclin Generation

1984 ◽  
Vol 51 (02) ◽  
pp. 186-188 ◽  
Author(s):  
A Szczeklik ◽  
R J Gryglewski ◽  
K Sladek ◽  
E Kostka-Trąbka ◽  
A Żmuda
Keyword(s):  
Linolenic Acid ◽  
Plasma Lipids ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Thromboxane A2 ◽  
Low Density ◽  
Red Cell ◽  
Double Blind ◽  
Daily Dose ◽  
Antithrombotic Effects

SummaryDihomo-γ-linolenic acid (DHLA), a precursor of monoenoic anti-aggregatory prostaglandins (PGE1, PGD2), was administered for 4 weeks in a daily dose of 1.0 g into 33 patients with atherosclerosis on a basis of a double-blind trial. Comparison of treatment and placebo groups revealed elevation of DHLA in red cell lipids in DHLA-treated subjects. No differences, however, between the two groups could be observed in platelet aggregability, thromboxane A2 generation by platelets, serum cholesterol, PGE1 and PGE2 levels, and in inhibitory activity of low-density lipoproteins against prostacyclin synthetizing system in arteries. The dietary supplementation used did not lead to distinct antithrombotic effects.

Sign in / Sign up

Export Citation Format

Share Document