Performance assessment of proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) for analysis of isobaric compounds in food-flavour applications.
Zardin E, Tyapkova O, Büttner A, Beauchamp J (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Pages Range: 153-160
DOI: 10.1016/j.lwt.2013.10.041
Abstract
Characterisation of food-flavour release using quadrupole-based on-line mass spectrometers such as proton-transfer-reaction mass spectrometry (PTR-MS, or PTR-QMS) can be complicated when nominally isobaric aroma compounds are present in complex food matrices. The recent combination of PTR-MS with time-of-flight mass spectrometry (PTR-TOF-MS) offers an analytical tool potentially capable of overcoming this problem because of its enhanced mass resolution. In this context, four pairs of isobaric compounds (cis-3-hexenol and 2,3-pentanedione, benzaldehyde and m-xylene, ethyl butanoate and 2-methylbutanol, and isobutyl isopentanoate and 1-hexanol) were investigated by PTR-TOF-MS to assess its mass-resolving power for food-flavour applications. Headspace analyses of aqueous solutions containing nominally isobaric aroma compounds that are unresolvable by PTR-QMS demonstrated that the PTR-TOF-MS mass-resolving power, which is m/z-dependent, enabled discrimination between isobaric peaks at a centre of mass separation down to at least 0.030 Da. Visual discrimination between these isobaric compound peaks in the headspace of aqueous solutions down to a concentration range of a few tens of ng mL−1 was also possible, enabling an empirical method for determining the limit of quantitation in solution for single compounds. PTR-TOF-MS offers distinct advantages over conventional PTR-MS for certain flavour release applications.
Authors with CRIS profile
Erika Zardin
Lehrstuhl für Lebensmittelchemie (Henriette-Schmidt-Burkhardt Lehrstuhl)
Oxana Tyapkova
Andrea Büttner Lehrstuhl für Aroma- und Geruchsforschung
Andrea Büttner Lehrstuhl für Aroma- und Geruchsforschung
Involved external institutions
Germany (DE)How to cite
APA:
Zardin, E., Tyapkova, O., Büttner, A., & Beauchamp, J. (2014). Performance assessment of proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) for analysis of isobaric compounds in food-flavour applications. Lwt-Food Science and Technology, 153-160. https://dx.doi.org/10.1016/j.lwt.2013.10.041
MLA:
Zardin, Erika, et al. "Performance assessment of proton-transfer-reaction time-of-flight mass spectrometry (PTR-TOF-MS) for analysis of isobaric compounds in food-flavour applications." Lwt-Food Science and Technology (2014): 153-160.
BibTeX: Download