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Sorbic acid-amine function interactions
1Département des Sciencs et Techniques d'Agen, Université Bordeaux I, Foulayronnes, France.
Food Additives and Contaminants
|October 9, 1998
Summary
Sorbic acid reacts with food amines via nucleophilic addition, forming new compounds. Reaction temperature influences product structure, yielding linear or cyclic derivatives.
Area of Science:
- Food chemistry
- Organic chemistry
- Chemical analysis
Background:
- Sorbic acid is a common food preservative.
- Its conjugated double bonds facilitate nucleophilic addition reactions.
- Interactions with food's endogenous amine compounds are not fully understood.
Purpose of the Study:
- To quantify sorbic acid interactions with food amine functions.
- To identify and characterize new products formed.
- To elucidate the reaction mechanisms and temperature-dependent outcomes.
Main Methods:
- Utilized ethyl sorbate and various amines for reaction studies.
- Employed High-Performance Liquid Chromatography (HPLC).
- Utilized Gas Chromatography (GC), GC-Mass Spectrometry (GC-MS), and Nuclear Magnetic Resonance (NMR) for analysis.
Main Results:
- Demonstrated the formation of novel chemical products from sorbic acid and amine reactions.
- Identified linear mono-adducts at 20 degrees C.
- Characterized cyclic derivatives, resulting from double addition, at elevated temperatures (50 degrees C and 80 degrees C).
Conclusions:
- Sorbic acid undergoes nucleophilic addition with amines in food matrices.
- Reaction temperature is a critical factor controlling the formation of linear versus cyclic adducts.
- Understanding these reactions is key for food safety and quality assessment.