Phenylacetaldehyde real-time release kinetics in wine like model solutions
Copyright © 2020. Published by Elsevier Ltd..
The present work shows key possibilities in modelling the kinetics of phenylacetaldehyde formation as a function of sugar, phenolic compounds, metals and sulphur dioxide. The release kinetics were measured online by proton transfer reaction-mass spectrometry (PTR-MS). Phenylacetaldehyde formation was fitted using Weibull models and an activation energy of 73 kJ/mol estimated. Also, a confirmation that glucose can inhibit the aldehyde formation was demonstrated, and the sequential additions in real time showed that the inhibition level was dependent on metal ions presence. Moreover, for the first time it was observed in real time the capacity of SO2 to bind with phenylacetaldehyde, and by trapping it, lowering its release. Finally, the impact of pH and temperature in the stability of the formed adducts and underling release mechanism is also elucidated.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:364 |
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| Enthalten in: |
Food chemistry - 364(2021) vom: 01. Dez., Seite 128948 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Monforte, Ana Rita [VerfasserIn] |
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| Links: |
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| Themen: |
Acetaldehyde |
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| Anmerkungen: |
Date Completed 24.09.2021 Date Revised 24.09.2021 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.foodchem.2020.128948 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM323313477 |
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| 520 | |a Copyright © 2020. Published by Elsevier Ltd. | ||
| 520 | |a The present work shows key possibilities in modelling the kinetics of phenylacetaldehyde formation as a function of sugar, phenolic compounds, metals and sulphur dioxide. The release kinetics were measured online by proton transfer reaction-mass spectrometry (PTR-MS). Phenylacetaldehyde formation was fitted using Weibull models and an activation energy of 73 kJ/mol estimated. Also, a confirmation that glucose can inhibit the aldehyde formation was demonstrated, and the sequential additions in real time showed that the inhibition level was dependent on metal ions presence. Moreover, for the first time it was observed in real time the capacity of SO2 to bind with phenylacetaldehyde, and by trapping it, lowering its release. Finally, the impact of pH and temperature in the stability of the formed adducts and underling release mechanism is also elucidated | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Kinetics | |
| 650 | 4 | |a Metals | |
| 650 | 4 | |a PTR-TOF-MS | |
| 650 | 4 | |a Phenylacetaldehyde | |
| 650 | 4 | |a Strecker | |
| 650 | 4 | |a Sulphur dioxide | |
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| 700 | 1 | |a Martins, Sara I F S |e verfasserin |4 aut | |
| 700 | 1 | |a Silva Ferreira, António César |e verfasserin |4 aut | |
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