The distinctive components between tomato juice products could be searched by capture of aromatic components with a headspace sampler and an non-targeted multivariate analysis by AnalyzerPro. An objective evaluation of the influence of differences in the types of raw materials/production process on aromatic components is possible by this approach.
The composition of volatiles from freshly ground roast-ed coffee is complex, with hundreds of chemical compounds contributing to the aroma. Head-space solid-phase micro-extraction was used to sample volatiles from five different coffees for analysis by GC-MS. Chemometric analysis revealed specific differences between coffees from different origins and different preparations.
For mass spectrometry (MS)-based metabolomics it is recommended to include the analysis of reference samples (preferably pooled study samples), as an added quality control (QC) measure at regular intervals throughout an analytical sequence.
Comprehensive two-dimensional GC-MS is a powerful analytical tool that has evolved from technology used mainly in the R&D laboratory to a robust commercially available solution from several manufacturers. As the amount of data from these instruments can be overwhelming, we have developed AnalyzerPro XD as a vendor neutral 2D data processing solution for all chromatographic-MS data. This software uses chromatographic deconvolution and component reconstruction to isolate the components from each sample.