Model Studies on the Release of Aroma Compounds from Structured and Nonstructured Oil Systems Using Proton-Transfer Reaction Mass Spectrometry

Relative retention, volatility, and temporal release of volatile compounds taken from aldehyde, ester, and alcohol chemical classes were studied at 70 °C in model systems using equilibrium static headspace analysis and real time dynamic headspace analysis. These systems were medium-chain triglycerid...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 2007-03, Vol.55 (5), p.1915-1922
Main Authors: Landy, Pascale, Pollien, Philippe, Rytz, Andreas, Leser, Martin E, Sagalowicz, Laurent, Blank, Imre, Spadone, Jean-Claude
Format: Article
Language:English
Subjects:
alcohols
aldehydes
Biological and medical sciences
Chemical Phenomena
Chemistry, Physical
dynamic aroma release
emulsions
Emulsions - chemistry
esters
Fat industries
Food industries
Fundamental and applied biological sciences. Psychology
Helianthus
hydrophobicity
Mass Spectrometry
medium-chain triglycerides
odor compounds
Odorants - analysis
Oils - chemistry
partition coefficient
Plant Oils - chemistry
proton-transfer reaction mass spectrometry
Protons
reaction kinetics
Sunflower Oil
triacylglycerols
Triglycerides - chemistry
volatile organic compounds
volatility
Volatilization
water-in-oil emulsions
water-in-oil microemulsions
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Summary:Relative retention, volatility, and temporal release of volatile compounds taken from aldehyde, ester, and alcohol chemical classes were studied at 70 °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. Keywords: Proton-transfer reaction mass spectrometry; L2 phase; water-in-oil emulsion; partition coefficient; aroma retention; dynamic aroma release
ISSN:0021-8561
1520-5118
DOI:10.1021/jf062643p