Abstract
Thermoxidative stability was evaluated in triaclyglycerols (TAG) from the oils of the mutant sunflower lines CAS-3, CAS-4, and CAS-8 (with a high percentage of stearic acid), CAS-5 (with a high percentage of palmitic acid), all from standard highlinoleic genetic backgrounds, and the mutant sunflower line CAS-12 (with a high percentage of palmitic acid), from a high-oleic genetic background. These oils contained unusually high contents of TAG molecular species with one or two saturated fatty acids at the sn-1,3 positions. Purified total TAG devoid of tocopherols were subjected to controlled thermoxidative treatment at 180°C. Polymerized TAG were determined at 2-h intervals for 10 h. After this time, total polar compounds, oxidized TAG monomers, TAG dimers, and TAG oligomers were determined. TAG from highly saturated sunflower oils with levels of linoleic acid similar to those found in conventional sunflower oils (40–50%) showed enhanced thermal stability. In these TAG, the amount of polar compounds formed during the thermoxidative treatment was similar to that formed in the high oleic acid line. Excellent results were obtained for the TAG of the CAS-12 oil, which had the highest thermal stability, producing half the amount of polar compounds as the conventional line and less than two-thirds that of the high-oleic line.
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References
Willet, W.C., and A. Ascherio, Trans Fatty Acids: Are the Effects Only Marginal? Am. J. Public Health 84:722–724 (1994).
Gunstone, F.D., J.L. Harwood, and F.B. Padley, The Lipid Handbook, Chapman & Hall, London, 1994, pp. 123–124.
Bracco, U., Effect of Triglyceride Structure on Fat Absorption, Am. J. Clin. Nutr. 60, 1002s-1009s (1994).
Renaud, S.C., J.C. Ruf, and D. Petithory, The Positional Distribution of Fatty Acids in Palm Oil and Lard Influences Their Biologic Effect in Rats, J. Nutr. 125:229–237 (1995).
Dobarganes, M.C., G. Márquez-Ruiz, and M.C. Pérez-Camino, Thermal Stability and Frying Performance of Genetically Modified Sunflower Seeds (Helianthus annuus L.) Oils, J. Agric. Food Chem. 41:678–681 (1993).
Dobson, G., W.W. Christie, and M.C. Dobarganes, Changes in Molecular Species of Triacylglycerols During Frying, Grasas Aceites 47:34–37 (1996).
Jorge, N., L. Ap. Guaraldo Goncalvez, and M.C. Dobarganes, Influence of Fatty Acid Composition on the Formation of Polar Glycerides and Polar Fatty Acids in Sunflower Oils Heated at Frying Temperatures, Grasas Aceites 48:17–24 (1997).
Osorio, J., J. Fernández-Martínez, M. Mancha, and R. Garcés, Mutant Sunflower with High Concentration of Saturated Fatty Acids in the Oil, Crop Sci. 35:739–742 (1995).
Fernández-Martínez, J.M., M. Mancha, J. Osorio, and R. Garcés, Sunflower Mutant Containing High Levels of Palmitic Acid in High Oleic Background, Euphytica 97:113–116 (1997).
Álvarez-Ortega, R., S. Cantisán, E. Martinez-Force, and R. Garcés, Characterization of Polar and Nonpolar Seed Lipid Classes from Highly Saturated Fatty Acid Sunflower Mutants, Lipids 32:833–837 (1997).
Barrera-Arellano, D., G. Márquez-Ruiz, and M.C. Dobarganes, A Simple Procedure to Evaluate the Performance of Fats and Oils at Frying Temperatures, Grasas Aceites 48:231–235 (1997).
International Union of Pure and Applied Chemistry (IUPAC) Standard Methods for the Analysis of Oils, Fats and Derivatives, 1st Supplement to the 7th Revised and Enlarged edn., Blackwell Scientific Publications, Oxford, 1992, Methods 1122, 2432, 2210, and 2508.
Yoshida, H., I. Kondo, and G. Kajimoto, Participation of Free Fatty Acids in the Oxidation of Purified Soybean Oil During Microwave Heating, J. Am. Oil Chem. Soc. 69:1136–1140 (1992).
Garcés, R., and M. Mancha, One Step Lipid Extraction and Methyl Esters Preparation from Fresh Plant Tissues, Anal. Biochem. 211:139–143 (1993).
Vander Wal, R.J., Calculation of the Distribution of the Saturated and Unsaturated Acyl Groups in Fats, from Pancreatic Lipase Hydrolysis Data, J. Am. Oil Chem. Soc. 37:18–20 (1960).
Dobarganes, M.C., M.C. Pérez-Camino, and G. Márquez-Ruiz, High-Performance Size Exclusion Chromatography of Polar Compounds in Heated and Non-Heated Fats, Fat Sci. Technol. 90:308–311 (1988).
Yamane, T., Statistics, 3rd edn., Harper and Row Publishers, New York, 1973, pp. 647–675.
Martínez-Force, E., R. Álvarez-Ortega, and R. Garcés, Enzymatic Characterization of High-Palmitic-Acid Sunflower (Helianthus annuus L.) Mutants, Planta 207:527–532 (1999).
Kleiman, R., and K.L. Payne-Wahl, Fatty Acid Composition of Seed Oils of the Meliaceae, Including One Genus Rich in cis-Vaccenic Acid, J. Am. Oil Chem. Soc. 61:1836–1838 (1984).
Carelli, A.A., and A. Cert, Comparative Study of the Determination of Triacylglycerol in Vegetable Oils Using Chromatographic Techniques, J. Chromatogr. 630:213–222 (1993).
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Márquez-Ruiz, G., Garcés, R., León-Camacho, M. et al. Thermoxidative stability of triacylglycerols from mutant sunflower seeds. J Am Oil Chem Soc 76, 1169–1174 (1999). https://doi.org/10.1007/s11746-999-0091-6
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DOI: https://doi.org/10.1007/s11746-999-0091-6