Effect of type of oil and addition of delta-tocopherol on model flavor compound stability during storage.
The objective of this study was to investigate approaches to protect selected flavor compounds from deterioration when stored in an oil matrix. An aroma compound model mixture was prepared in a medium-chain triglyceride (MCT) or sunflower oil (SfO) matrix and stored under either an ambient air or argon atmosphere containing, respectively, ca. 20 and <0.5% residual oxygen as controls or containing a natural antioxidant, delta-tocopherol (0.01%). Samples were analyzed by static headspace GC/FID to determine the stability over time of the compounds in mixture. It was found that the type of oil had the greatest effect (P < 0.01) on overall compound stability. A low-oxygen atmosphere also had a significant (P < 0.05) protective effect on the aroma compounds in both oils. The addition of delta-tocopherol generally offered little additional protection. No significant relationship could be determined between the oxidation of the lipid matrix and the loss of oxidation-sensitive thiol compounds.
Leclercq
Segolene
S
Deparment Food Science and Nutrition, University of Minnesota, 1334 Eckles Avenue, St. Paul, Minnesota 55108, USA. lecle003@umn.edu
Reineccius
Gary A
GA
Milo
Christian
C
D000975:Antioxidants / Q000008:administration & dosage*; D003931:Diacetyl / Q000032:analysis; D004042:Dietary Fats, Unsaturated / Q000032:analysis*; D004121:Dimethyl Sulfoxide / Q000032:analysis; D004355:Drug Stability; D005519:Food Preservation; D005663:Furans / Q000032:analysis; D009812:Odorants / Q000032:analysis*; D010938:Plant Oils / Q000737:chemistry; D011758:Pyrroles / Q000032:analysis; D013438:Sulfhydryl Compounds / Q000032:analysis; D000074242:Sunflower Oil; D024505:Tocopherols / Q000008:administration & dosage*; D014280:Triglycerides
D000975:Antioxidants; D004042:Dietary Fats, Unsaturated; D005663:Furans; D010938:Plant Oils; D011758:Pyrroles; D013438:Sulfhydryl Compounds; D000074242:Sunflower Oil; D014280:Triglycerides; C455106:furfuryl mercaptan; C479072:delta-tocopherol; D003931:Diacetyl; C096654:N-methylpyrrole; D024505:Tocopherols; D004121:Dimethyl Sulfoxide