LCGC Europe-09-01-2017

How do non-alkylsilica columns provide us an additional dimension of column selectivity?

Monitoring lipid oxidation during the shelf life of lipid-containing food emulsions, such as mayonnaise, is challenging. It is, however, essential for the development of improved, consumer-preferred products. Determining the nonvolatile lipid oxidation products (NONVOLLOPS), the precursor compounds for rancidity, is required to determine the effectiveness of product stabilization technologies. A method based on normal-phase liquid chromatography with atmospheric pressure photo ionization-mass spectrometry (LC–APPI-MS) was developed for this purpose. The inclusion of a size-exclusion chromatography (SEC) step was needed to remove interfering diacylglycerides and free fatty acids from the samples. The combined SEC and normal-phase LC–APPI-MS method allowed the identification of a wide range of oxidized species including hydroperoxides, oxo-2½ glycerides, epoxides, and other oxidized species. The method was found to be more suitable for the analysis of large sample sets. The relative levels of NONVOLLOPS from bo

The 45th International Symposium on High Perfomance Liquid Phase Separations and Related Techniques (HPLC 2017), cochaired by Michal Holc€apek and František Foret, was held 18–22 June in Prague, Czech Republic. This instalment covers some of the highlights observed at the symposium, including advances in large-molecule separations, multidimensional chromatography, and areas of growing application of high performance liquid chromatography (HPLC). In addition, trends and perspectives on future developments in HPLC noted from the conference are presented.

Giuseppe Cannazza and Cinzia Citti from the University of Modena and Reggio Emilia discuss the growing interest in the use of medicinal cannabis in Europe and the analytical challenges involved.

The 15th International Symposium on Hyphenated Techniques in Chromatography and Separation Technology (HTC-15) will be held at Cardiff City Hall, Cardiff, United Kingdom, from 24–26 January 2018.

ChromSoc’s Advances in Gas Chromatography meeting will take place at The Heath Business and Technical Park, Runcorn, Cheshire, UK, on 18 October 2017.

Click the title above to open the LCGC Europe September 2017 regular issue, Vol 30, No 9, in an interactive PDF format.