Colorimetric Determination of Long-chain N-Acylglutamic Acids with Pinacyanol

The colorimetric micro-determination of long-chain fatty acids.

Duncombe W G. The colorimetric micro-determination of long-chain fatty acids. Biochem. J. 88:7-10, 1963

“The start of this work was the need for a sensit ive quanti tat ive analysis for radioactive long-chain fatty acids eluted from paper chromatograms, so that their specific activities could be determined. I found a reference to a method in which the copper soaps of such acids were analysed by spectroscopy of their solut ions in chloroform, making use of their blue colour. However, the sensitivi...

Effects of enriched Artemia with n–3 long-chain polyunsaturated fatty acids on growth performance, stress resistance and fatty acid profile of Litopenaeus vannamei postlarvae

A 15-day study was conducted to evaluate the effects of Artemia metanauplii enriched with two commercial supplements (Easy DHA-Selco and S. presso) which contained high levels of n–3 long chain polyunsaturated fatty acids (n–3 LC-PUFA) on growth performance, stress resistance and fatty acid profile of Litopenaeus vannamei post larvae (PL). In this regard, PL were fed with three different types ...

Effects of enriched Artemia with n–3 long-chain polyunsaturated fatty acids on growth performance, stress resistance and fatty acid profile of Litopenaeus vannamei postlarvae

A 15-day study was conducted to evaluate the effects of Artemia metanauplii enriched with two commercial supplements (Easy DHA-Selco and S. presso) which contained high levels of n–3 long chain polyunsaturated fatty acids (n–3 LC-PUFA) on growth performance, stress resistance and fatty acid profile of Litopenaeus vannamei post larvae (PL). In this regard, PL ...

Automated colorimetric determination of free fatty acids in biologic fluids.

HE MOST FREQUENTLY USED procedure for the determination of free fatty acids (FFA) in body fluids or biologic media is that of Dole (4). This method is based on the extraction of fatty acids with organic solvents followed by titration with dilute alkali. Despite improvements in specificity (3, 5, 6), this method is subject to error resulting from dissolved atmospheric carbon dioxide. When applie...