Determination of Water-and Fat-Soluble Vitamins in Gummies by Reversed-Phase Liquid Chromatography
Poster Mar 15, 2017
Changling Qiu & Douglas E. Raynie
Vitamins are essential substances for human health and growth. Storage, aging, and processing of foods may cause vitamin loss. There is a need to develop a fast and accurate analytical method for the determination of vitamins in foods.
The determination of vitamins in sugar-based matrix is usually a challenging task due to the complexity of the matrix and instability of vitamins. Gummies are sugar-based candies which are fortified with selected vitamins.
Until now, no method has been proposed for the determination of vitamins in gummies. In this work, the determination of six water-soluble vitamins and three fat-soluble vitamins is studied by reverse phase liquid chromatograph(RP-LC) with ultra-violet detector at different wavelengths, on a C-8 column using phosphate buffer and acetonitrile as mobile phase.
Proteomics and Substrate Based MS Imaging of Xenobiotic Metabolising Enzymes in Ex Vivo Human Skin and a Human Living Skin Equivalent ModelPoster
Untargeted proteomics analysis showed that human skin and a commercially available living skin equivalent model exhibit a similar distribution of xenobiotic metabolising enzymes. A new technique, substrate based mass spectrometry imaging (SB-MSI) was developed during this study.READ MORE
Development and Assessment of Non-Infected and Infected Skin Models Using MALDI-MSIPoster
Infections have detrimental effects on wound healing leading to chronic wound formation. The use of labskin,a living skin model, in combination with mass spectrometry imaging, provides a good model for assessing wound healing factors.READ MORE
Overcoming the Challenges of Analysing Ionic Polar Pesticides in FoodPoster
Here, the novel application of the Waters’ Torus DEA column is presented, showing the improved performance of a UPLC-MS/MS method for the underivatised
analysis of glyphosate and a selection of other anionic pesticides.