Analysis of pulegone and its enanthiomeric distribution in mint-flavoured food products.
A procedure for the extraction and determination of pulegone enanthiomers in mint essential oils and mint products (syrups, dried leaves, toothpaste, lozenges, candy and chewing-gum) was developed. The compounds were recovered from the food matrices by employing a simultaneous distillation-extraction (SDE) technique with a Likens-Nickerson apparatus using dichloromethane as an extraction solvent. The analyses were performed by capillary gas chromatography mass spectrometry (GC/MS). Experiments on food products spiked at different pulegone concentrations showed recoveries ranging from 95 to 106%. The detection limit was about 5?mg?l(-1) for both pulegone enanthiomers and good linearity was found in the concentration range 0.5-25?mg?l(-1). In a number of repeated analyses, the pulegone peak height repeatability (RSD) was 0.2%. The pulegone enanthiomers were separated and quantified by enanthioselective multidimensional gas chromatography. The results of analyses conducted on essential mint oils and mint-flavoured food products are reported.[1]References
- Analysis of pulegone and its enanthiomeric distribution in mint-flavoured food products. Siano, F., Catalfamo, M., Cautela, D., Servillo, L., Castaldo, D. Food additives and contaminants. (2005) [Pubmed]
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