|Publication type:||Article in scientific journal|
|Type of review:||Peer review (publication)|
|Title:||Proton transfer reaction mass spectrometry, a tool for on-line monitoring of acrylamide formation in the headspace of maillard reaction systems and processed food|
|Published in:||Analytical Chemistry|
|Publisher / Ed. Institution:||American Chemical Society|
|Subjects:||Coffee; Quality; PTR-MS|
|Subject (DDC):||664: Food technology|
|Abstract:||The formation of acrylamide was measured in real time during thermal treatment (120-170°C) of potato as well as in Maillard model systems composed of asparagine and reducing sugars, such as fructose and glucose. This was achieved by on-line monitoring of acrylamide released into the headspace of the samples using proton transfer reaction mass spectrometry (PTR-MS). Unambiguous identification of acrylamide by PTR-MS was accomplished by gas chromatography coupled simultaneously to electronimpact MS and PTR-MS. The PTR-MS ion signal at m/z 72 was shown to be exclusively due to protonated acrylamide obtained without fragmentation. In model Maillard systems, the formation of acrylamide from asparagine was favored with increasing temperature and preferably in the presence of fructose. Maximum signal intensities in the headspace were obtained after 2 min at 170°C, whereas 6-7 min was required at 150°C. Similarly, the level of acrylamide released into the headspace during thermal treatment of potato was positively correlated to temperature|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||Life Sciences and Facility Management|
|Organisational Unit:||Institute of Chemistry and Biotechnology (ICBT)|
|Appears in collections:||Publikationen Life Sciences und Facility Management|
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