Effects of α-Tocopherol on the Oxidative Stability and Incorporation of Deuterium in Volatiles from a Linoleic Acid-deuterium Model System

다국어 초록 (Multilingual Abstract)

The effects of α-tocopherol on the oxidative stability and incorporation of deuterium in volatiles were evaluated in linoleic acid-water model systems treated at 60oC by analyzing headspace oxygen depletion, formation of lipid hydroperoxides, and profiles of headspace volatiles. Deuterium oxide accelerated the rates of linoleic acid oxidation compared to samples in deuterium-free water. As the concentration of α-tocopherol increased from 0 to 1500 ppm, the consumption of headspace oxygen and the formation of volatiles decreased, whereas the contents of lipid hydroperoxides did not decrease in the linoleic acid-water system. The mass to charge ratios (m/z) of volatiles in linoleic aciddeuterium oxide were significantly higher than those with deuterium oxide-free water. Generally, the presence of α-tocopherol decreased the mass to charge ratios (m/z) of volatiles including pentanal, hexanal, t-2-heptenal, and 2-octenal, implying that α-tocopherol may be involved in the aldehyde formation from lipid oxidation.

참고문헌 (Reference)

1 Laguerre M, "What makes good antioxidants in lipid-based systems? The next theories beyond the polar paradox" 55 : 183-201, 2015

2 Kim JY, "Synergism of phosphatidylcholine on the antioxidant properties of α-tocopherol in corn oils under different relative humidity" 50 : 1421-1428, 2015

3 Nardello V, "Singlet Oygen, UV-A, and Ozone, Methods in Enzymology" Academic Press 50-58, 2000

4 Chaiyasit W, "Role of physical structures in bulk oils on lipid oxidation" 47 : 299-317, 2007

5 Kim JY, "Role of moisture on the lipid oxidation determined by D2O in linoleic acid system" 146 : 134-140, 2014

6 김지연, "Oxidative Stability of Solid Fats Containing Ethylcellulose Determined Based on the Headspace Oxygen Content" 한국식품과학회 23 (23): 1779-1784, 2014

7 Waraho T, "Mechanisms of lipid oxidation in food dispersions" 22 : 3-13, 2011

8 Choe E, "Mechanisms and factors for edible oil oxidation" 5 : 169-186, 2006

9 McClements DJ, "Lipid oxidation in oil-in-water emulsions: Impact of molecular environment on chemical reactions in heterogeneous food systems" 65 : 1270-1282, 2000

10 Malgorzata NK, "Influence of native antioxidants on the formation of fatty acid hydroperoxides in model systems" 109 : 1028-1037, 2007

11 Kittipongpittaya K, "Impact of free fatty acids and phopholipids on reverse micelles formation and lipid oxidation in bulk oil" 91 : 453-462, 2014

12 Decker EA, "Food Lipids: Chemistry, Nutrition, Biotechnology" Marcel Dekker 397-448, 1996

13 Frankel EN, "Flavor Chemistry of Fats and Oils" American Oil Chemists' Society Monograph 1-37, 1985

14 Park JW, "Evaluation of oxygen limitation on lipid oxidation and moisture content in corn oil at elevated temperature" 91 : 439-444, 2014

15 Yang SO, "Effects of riboflavin-photosensitization on the formation of volatiles in linoleic acid model systems with sodium azide or D2O" 105 : 1375-1381, 2007

16 Kim JY, "Effects of relative humidity on the antioxidant properties of α-tocopherol in stripped corn oil" 167 : 191-196, 2015

17 오수미, "Effects of Deuterium Oxide on Formation of Volatiles in Linoleic Acid Model Systems at Different Temperatures and Oxygen Limitation Conditions" 한국식품과학회 24 (24): 41-46, 2015

18 MinKyu Jeong, "Correlation of Volatiles and Fatty Acids in Thermally Oxidized Fatty Acid Model Systems Using Statistical Approaches" 한국식품과학회 19 (19): 1233-1239, 2010

19 Kim JY, "Antioxidant properties of ascorbic acid in bulk oils at different relative humidity" 176 : 302-307, 2015

20 Frankel EN, "Analysis of autoxidized fats by gas chromatography mass spectrometry: VII. Volatile thermal decomposition products of pure hydroperoxides from autoxidized and photosensitized oxidized methyl oleate, linoleate and linolenate" 16 : 279-285, 1981

21 Jeong MK, "Aldehydes from oxidized lipids can react with 2,2-diphenyl-1-picrylhydrazyl(DPPH) free radicals in isooctane systems" 89 : 1831-1838, 2012