Abstract
Tocopherols and sterols were lost considerably during the refining process of vegetable oils, resulting in a dramatic decrease in the oxidation stability. However, the oxidation stability of vegetable oils was not directly proportional to tocopherol content, not mention to its synergistic interaction with sterol. Based on the peroxide values of oils with different content of tocopherols and sterols during storage at 65 °C, it was found that soybean oil (SO) had the best stability when the content of tocopherols and sterols was 0.14 and 1.09%, respectively, whereas the value in rapeseed oil (RO) was 0.06% and 1.14–2.90%. The optimal content of tocopherol in RO was lower than that in SO was due to the different tocopherol isoforms. Furthermore, it was found that the storage stability decreased significantly when adding a same content of α-tocopherol, compared with that by retaining more tocopherol isoforms existed in SO. It was suggested that retaining more tocopherol and sterol during vegetable oils refining improved the oxidation stability, however, it did not mean the more the better. The oxidation stability was dependent on both the content and the isoform. This study helps to define the effective contents of tocopherol and sterol under the moderate refining technology.
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Afinisha Deepam LS, Sundaresan A, Arumughan C (2011) Stability of rice bran oil in terms of oryzanol, tocopherols, tocotrienols and sterols. J Am Oil Chem Soc 88:1001–1009
Anna-Maija L, Leena K, Afaf KE, Piironen V (1999) Antioxidant activities of α- and γ-tocopherols in the oxidation of rapeseed oil triacylglycerols. J Am Oil Chem Soc 76:749–755
CODEX standard for named vegetable oils. CODEX STAN 210-1999
Colombo ML (2010) An update on vitamin E, tocopherol and tocotrienol—perspectives. Molecules 15:2103–2113
Dijkstra AJ, van Duijn G (2016) Vegetable oils: oil production and processing. Elsevier, Oxford
Dunford NT (2004) Oil- and oilseed-based bioactive compounds and their health effects. AOCS, Illinois
Elisia I, Young JW, Yuan YV, Kitts DD (2013) Association between tocopherol isoform composition and lipid oxidation in selected multiple edible oils. Food Res Int 52:508–514
Fang B, Wei C, Wang Y, Liu J, Duan Z, Luan X (2014a) Influence of refining process on minor components in soybean oil. China Oils Fats 39:8–11 (Chinese)
Fang B, Wei C, Wang Y, Luan X (2014b) Effect of refining on anti-oxidant activities of soybean oil and rapeseed oil. China Oils Fats 39:45–48 (Chinese)
Farhoosh R, Einafshar S, Sharayei P (2009) The effect of commercial refining steps on the rancidity measures of soybean and canola oils. Food Chem 115:933–938
Fuster MD, Lampi AM, Hopia A, Kamal-Eldin A (1998) Effects of α- and γ-tocopherols on the autoxidation of purified sunflower triacylglycerols. Lipids 33:715–722
Hidalgo FJ, León MM, Zamora R (2009) Effect of β-sitosterol in the antioxidative activity of oxidized lipid–amine reaction products. Food Res Int 42:1215–1222
Huang SW, Frankel EN, German JB (1995) Effects of individual tocopherols and tocopherol mixtures on the oxidative stability of corn oil triglycerides. J Agric Food Chem 43:2345–2350
Johnson LA (2008) Recovery, refining, converting, and stabilizing edible fats and oils. CRC, New York
Kamal-Eldin A, Budilarto E (2015) Tocopherols and tocotrienols as antioxidants for food preservation. Elsevier, Oxford
Kamal-Eldin A, Makinen M, Lampi AM (2010) Lipid oxidation pathways. AOCS, Urbana
Kinen M, Kamal-Eldin A, Lampi AM, Hopia A (2000) Effects of α- and γ-tocopherols on formation of hydroperoxides and two decomposition products from methyl linoleate. J Am Oil Chem Soc 77:801–806
Moreau RA, Whitaker BD, Hicks KB (2002) Phytosterols, phytostanols, and their conjugates in foods: structural diversity, quantitative analysis, and health-promoting uses. Prog Lipid Res 41:457–500
Wang T, Hicks KB, Moreau R (2002) Antioxidant activity of phytosterols, oryzanol and other phytosterols conjugates. J Am Oil Chem Soc 79:1201–1206
Winkler-Moser JK, Hwang HS, Bakota EL, Palmquist DA (2015) Synthesis of steryl ferulates with various sterol structures and comparison of their antioxidant activity. Food Chem 169:92–101
Yi J, Andersen ML, Skibsted LH (2011) Interactions between tocopherols, tocotrienols and carotenoids during autoxidation of mixed palm olein and fish oil. Food Chem 127:1792–1797
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The authors thank Ningke Zhu (College of Food Science and Engineering, Central South University of Forestry and Technology) and Yinghui Wang (Academy of State Administration of Grain) for technical assistance.
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Fang, B., Zhang, M. & Shen, Y.M. Importance of the higher retention of tocopherols and sterols for the oxidative stability of soybean and rapeseed oils. J Food Sci Technol 54, 1938–1944 (2017). https://doi.org/10.1007/s13197-017-2628-2
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DOI: https://doi.org/10.1007/s13197-017-2628-2