Gas-liquid chromatography of monoglycerides and diglycerides

Separation of mono- and diglycerides by gas--liquid chromatography.

The parameters affecting the separation and quantification of trimethylsilyl ethers of mono- and diglycerides have been investigated by gas-liquid chromatography with QF-1 and SE-30 as stationary phases and a flame ionization detector. Results have been compared with those obtained earlier for triglycerides. The isothermal characteristics of a range of trimethylsilyl ethers of mono- and diglyce...

Gas and Liquid Chromatography

Wine: Gas and Liquid Chromatography

From the chemical point of view, wines are aqueous alcoholic solutions containing more than 1000 components that can be present at high concentrations (g L ), but also at trace levels (ng L ). Some of these components determine the organoleptic properties of wines, while others are signi"cant for classifying their origin and/or for checking whether some adulteration has taken place. Concentrati...

Simplified measurement of monoglycerides, diglycerides, triglycerides, and free fatty acids in biological samples.

IPublished methods for the determination of plasma triglycerides are of two kinds, enzymatic (1-3) and colorimetric (4-7). Both require preliminary removal of phospholipids and saponification of triglycerides. With the enzymatic method, glycerin released is quantitatively determined with the specific enzyme GPDH’ and NAD. In the colorimetric methods, glycerin is oxidized to formaldehyde with pe...

Metal Analysis: Gas and Liquid Chromatography