Chemistry Reference
In-Depth Information
Defect
Chemicals
Mechanism of Formation
Reference
Chemical, solvent-like
Propylacetate
Solvent residue from
packaging material
Marsili (2003)
Butter
Green or yogurt-like
Acetaldehyde
Microbial, enzymatic
Lindsay et al. (1965)
Metallic
1,5-Octadiene-2-one
Lipid oxidation
Swodoba and Peers (1977)
Stale
Styrene
Residue from packaging
material
Lozano et al. (2007)
Burnt/rubbery/sulphur
Benzyl methyl sulphide
Unknown
Drake et al. (2007b)
Butter oil
Cardboard
(E)-/(Z)-2-Nonenal
Lipid oxidation
Grosch et al. (1994)
Widder and Grosch (1997)
Sterilized concentrated milk
Stale
o-Aminoacetophenone
-
Arnold et al. (1966)
Ice cream
Putrid flavour
Dimethyl disulphide, hexanal
Light-induced
degradation (singlet
oxygen
Marsili (2003)
oxidation) of methionine /
lipid oxidation
Sour cream buttermilk
Metallic
(E,Z)-2,6-Nonadien-1-ol
Lipid oxidation,
microbial, enzymatic
Helier and Schieberle
(1997a, b)
Yogurt
Smoky or phenolic aroma
Guaiacol (defect found in vanilla flavoured
products)
Microbial
Whitfield (1998)
Cheese-like off-note
Short-chain fatty acids
Microbial, enzymatic
Rychlik et al. (2006)
(Continued )
