Model studies on the release of aroma compounds from structured and nonstructured oil systems using proton-transfer
Pascale Landy1, Philippe Pollien, Andreas Rytz
1Nestlé Research Center, Vers-chez-les-Blanc, CH-1000 Lausanne 26, Switzerland.
Abstract:
Relative retention, volatility, and temporal release of volatile compounds taken from aldehyde, ester, and alcohol chemical classes were studied at 70 degrees C in model systems using equilibrium static headspace analysis and real time dynamic headspace analysis. These systems were medium-chain triglycerides (MCT), sunflower oil, and two structured systems, i.e., water-in-oil emulsion and L2 phase (water-in-oil microemulsion). Hydrophilic domains of the emulsion type media retained specifically the hydrophilic compounds and alcohols. Four kinetic parameters characterizing the concentration- and time-dependent releases were extracted from the aroma release curves. Most of the kinetic parameter values were higher in structured systems than in oils particularly when using MCT. The oil nature was found to better control the dynamic release profiles than the system structures. The release parameters were well-related (i) to the volatile hydrophobicity as a function of the oil used and (ii) to the retention data in the specific case of the L2 phase due to a specific release behavior of alcohols.
Related Concept Videos
Mass Spectrometry: Aromatic Compound Fragmentation
Mass Spectrometry: Carboxylic Acid, Ester, and Amide Fragmentation
For example, the fragmentation of...
Tandem Mass Spectrometry
Mass Spectrometry: Long-Chain Alkane Fragmentation
Mass Spectrometry: Branched Alkane Fragmentation
Mass Spectrometry: Molecular Fragmentation Overview
One type of fragmentation pattern is the cleavage of a single bond in the molecular ion. The cleavage leads to a radical and a cation. The cleavage can occur at...


