AI Article Synopsis
- Mass spectrometry combined with solid-phase microextraction (HS-SPME-MS) was used to analyze 45 types of raw spirits made from different plants (C3: potato, rye, wheat; C4: corn, sorghum) without needing any prior separation by chromatography.
- Isotope ratio mass spectrometry (IRMS) successfully distinguished between C3 and C4 spirits, but could not differentiate C3 samples effectively.
- In contrast, HS-SPME-MS provided clear classification of the spirits by analyzing unresolved volatile compound "fingerprints," with data validation supported by OPLS-DA and artificial neural networks (ANN).
Article Abstract
Mass spectrometry based quasi-electronic nose using solid-phase microextraction to introduce volatiles directly to mass spectrometer without chromatographic separation (HS-SPME-MS) was used to discriminate 45 raw spirits produced from C3 (potato, rye, wheat) and C4 (corn, sorghum) plants. The samples were also subjected to isotope ratio mass spectrometry (IRMS), which unequivocally distinguished C3 from C4 samples; however, no clear differentiation was observed for C3 samples. On the contrary, HS-SPME-MS, which uses unresolved volatile compounds "fingerprints" in a form of ions of a given / range and various intensities provided excellent sample classification and prediction after OPLS-DA data processing verified also by the artificial neural network (ANN).
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| http://dx.doi.org/10.1021/acs.jafc.2c08141 | DOI Listing |
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