Discriminant analysis of vegetable oils by thermogravimetric-gas chromatography/mass spectrometry combined with data fusion and chemometrics without sample pretreatment

Extracting Information and Enhancing the Quality of Separation Data: A Review on Chemometrics-Assisted Analysis of Volatile, Soluble and Colloidal Samples

“…Works using IMS as a GC detector have increased over the last few years, also due to the cost reduction of the instruments [81]. It is also worth noting that often GC-IMS systems do not require the chemical pre-treatment of samples before the analysis, when working in head-space mode, making it a great advantage in terms of costs, but also of sample representability [29,82]. The second level of separation, however, produces two-dimension chromatograms, that require chemometrics for a proper elaboration [29].…”

Evening primrose oil: a comprehensive review of its bioactives, extraction, analysis, oil quality, therapeutic merits, and safety

“…189,190 For instance, untargeted metabolomics based on high-resolution mass spectrometry have enabled the study of fingerprints and the discovery of particular indicators for sesame oil adulteration. 191 The recent applications of high-performance liquid chromatography coupled with high-resolution mass spectrometry (LC-MS)-based foodomics have investigated five different types of unrefined, cold-pressed seed oils to identify potential markers for oil authenticity and confirm their adulteration, including EPO. 192 The result of this study tentatively identified 8 oil-specific markers for EPO, which were helpful in the quality control of commercial oil products likely to be contaminated with other major seed oils such as sesame, sunflower, and rapeseed oils.…”

Introductory Chapter: Novel Aspects in Gas Chromatography and Chemometrics

“…Data are projected from a D dimensional feature space down to a D′ (D > D′) dimensional space to maximize inter-class variability and reduce intra-class variability [24] Introductory Chapter: Novel Aspects in Gas Chromatography and Chemometrics DOI: http://dx.doi.org/10.5772/intechopen.109943…”