13 C nuclear magnetic resonance monitoring of free fatty acid release after fish thermal processing

1994 ◽  
Vol 71 (5) ◽  
pp. 479-482 ◽  
Author(s):  
Isabel Medina ◽  
Raffaele Sacchi ◽  
Santiago Aubourg
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Magnetic Resonance ◽  
Thermal Processing ◽  
Fatty Acid Release ◽  
Acid Release ◽  
Nuclear Magnetic

scholarly journals Determination of the 1,3- and 2-Positional Distribution of Fatty Acids in Olive Oil Triacylglycerols by 13C Nuclear Magnetic Resonance Spectroscopy

2006 ◽  
Vol 89 (4) ◽  
pp. 1071-1076 ◽  
Author(s):  
Giovanna Vlahov
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Olive Oil ◽  
Distribution Pattern ◽  
Random Distribution ◽  
Linear Models ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

Abstract Linear models were selected from a large data set acquired for Italian olive oil samples by quantitative 13C nuclear magnetic resonance (NMR) spectroscopy with distortionless enhancement by polarization transfer (DEPT). The models were used to determine the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols. The linear models selected proved that the 1,3- and 2-distribution of saturated, oleate, and linoleate chains in olive oil triacylglycerols deviated from the random distribution pattern to an extent that depended on the concentration of the fatty acid in the whole triacylglycerol. To calculate the fatty acid composition of the 1,3- and 2-positions of olive oil triacylglycerols, the equations of the selected linear models were applied to the fatty acid percentages determined by gas chromatography. These data were compared with the values predicted by the computer method (used to determine the theoretical amounts of triacylglycerols), which is based on the 1,3-random-2-random theory of the fatty acid distribution in triacylglycerols. The biggest differences were found in the linoleate chain, which is the chain that deviated the most from a random distribution pattern. The results confirmed that the 1,3-random-2-random distribution theory provides an approximate method for determining the structure of triacylglycerols; however, the linear models calculated by the direct method that applies 13C NMR spectroscopy represent a more precise measurement of the composition of the 2 fatty acid pools esterifying the 1,3- and 2-positions of triacylglycerols.

Epinephrine-insulin antagonism on free fatty acid release

1961 ◽  
Vol 201 (5) ◽  
pp. 815-818 ◽  
Author(s):  
John J. Spitzer ◽  
William T. McElroy
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Blood Sugar ◽  
Drug Administration ◽  
Hepatic Uptake ◽  
Fatty Acid Release ◽  
Plasma Ffa ◽  
Acid Release

The effects of epinephrine or norepinephrine were studied in dogs receiving insulin plus glucose prior to and during administration of the amine. Epinephrine caused a significantly smaller elevation of free fatty acids (FFA) with than without insulin plus glucose administration. Blood sugar responses were quantitatively similar. Epinephrine increased both hepatic uptake of FFA and hepatic release of glucose; these changes were similar to the ones found previously in dogs not receiving insulin plus glucose. The action of norepinephrine on elevating plasma FFA was only slightly and not significantly affected by the administration of insulin plus glucose. When the order of drug administration was reversed, infusion of insulin plus glucose lowered plasma FFA levels and hepatic FFA uptake in animals already receiving either epinephrine or nonepinephrine.

Characterization of the lipolytic pathways that mediate free fatty acid release during Fas/CD95-induced apoptosis

APOPTOSIS ◽  
2005 ◽  
Vol 10 (6) ◽  
pp. 1369-1381 ◽  
Author(s):  
M. Iturralde ◽  
J. Pardo ◽  
E. Lacasa ◽  
G. Barrio ◽  
M. A. Alava ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Fatty Acid Release ◽  
Acid Release ◽  
Induced Apoptosis

Nuclear magnetic resonance screening of changes in fatty acid and cholesterol content of ovine milk induced by ensiled olive cake inclusion in Chios sheep diets

2019 ◽  
Vol 177 ◽  
pp. 111-116 ◽  
Author(s):  
Simoni Symeou ◽  
Constantinos G. Tsiafoulis ◽  
Ioannis P. Gerothanassis ◽  
Despoina Miltiadou ◽  
Ouranios Tzamaloukas
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fatty Acid ◽  
Magnetic Resonance ◽  
Cholesterol Content ◽  
Olive Cake ◽  
Chios Sheep ◽  
Nuclear Magnetic

scholarly journals Deconvolution as a Novel Approach to Analyze Moment-to-Moment Free Fatty Acid Release**

Obesity ◽  
2007 ◽  
Vol 15 (10) ◽  
pp. 2416-2423
Author(s):  
Katrin Hücking ◽  
Isabel R. Hsu ◽  
Viorica Ionut ◽  
Richard N. Bergman
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Novel Approach ◽  
Fatty Acid Release ◽  
Acid Release
Sign in / Sign up

Export Citation Format

Share Document