Determination of wax concentration in sunflower seed oil
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Isothermal crystallization of waxes was studied by using an optical setup. The induction time of crystallization was assessed as a function of wax concentration. The relationship was found to be a decreasing exponential curve. The wax content of some of the solutions prepared in the laboratory was determined by calculating the crystallization induction time. The values obtained were compared to those from different methods (cold test, microscopic, and turbidimetric methods). The results obtained with the optical setup method are similar to those obtained with other methods for concentrations greater than 100 ppm. An analysis of variance test was used to verify the authenticity of the values obtained with the optical method. Results showed that the method used to determine wax concentration, the concentration of the sample, and the relationship between both parameters do not affect significantly the values of percentage relative errors (P<0.05) obtained for concentrations greater than 100 ppm. Values obtained for wax content within the range 0–100 ppm could not be compared since the microscopic and turbidimetric methods are not sensitive enough, unlike the optical setup, to detect wax amounts in such low concentration.
- Bloch, S., Distintas Alternativas para la Refinación y Descerado del Aceite de Girasol, Aceites Grasas 30:53–66 (1998).
- Kehse, W., Winterization of Sunflower Oil, Rev. Fr. Corps Gras 27:567–570 (1980).
- Morrison, W.H., III, and J. Robertson, Solvent Winterization of Sunflower-seed Oil, J. Am. Oil Chem. Soc. 52:148–150 (1975).
- Morrison, W.H., III, Rapid Determination of Wax in Sunflower Seed Oil, ——Ibid. 59:284–285 (1982).
- Ostric-Matijasecic, B., and J. Turkulov, Determination of Waxes in Sunflower Grains, Shells and Oil. Modified Method of Extraction, Rev. Fr. Corps Gras, 20:5–10 (1973).
- Ruckenstein, C., Modern Processing of Crude Sunflower Oil, ——Ibid. 28:161–164 (1981).
- Klein, K., and L.S. Crauer, Further Developments in Crude Oil Processing, J. Am. Oil Chem. Soc. 51:382A-385A (1974).
- Leibovitz, Z., and C. Ruckestein, New Processes in Degumming, Bleaching, Deacidification-Deodorization and Winterizing of Edible Oils, Rev. Fr. Corps Gras 28:303–308 (1981).
- Turkulov, J., E. Dimic, D. Karlovic, and V. Vuska, The Effect of Temperature and Wax Content on the Appearance of Turbidity in Sunflower Seed Oil, J. Am. Oil Chem. Soc. 63:1360–1363 (1986).
- Brimberg, U.I., and I.C. Wretensjo, Rapid Method for Determination of Wax in Sunflower Seed Oil, ——Ibid. 56:857–860 (1979).
- Rivarola, G., M.C. Añón, and A. Calvello, Crystallization of Waxes During Sunflower Seed Oil Refining, ——Ibid. 62:1508–1513 (1985).
- Herrera, M.L., Crystallization Behavior of Hydrogenated Sunflower Seed Oil: Kinetics and Polymorphism, ——Ibid. 71: 1255–1260 (1994).
- Herrera, M.L., and K. Sato, Kinetic Study of Crystallization of Hydrogenated Sunflower-seed Oil, inform 5:553 (1994).
- Petruccelli, S., and M.C. Añón, Crystallization of Waxes in Sunflower Seed Oil: Effects of an Inhibitor, J. Am. Oil Chem. Soc. 68:684–686 (1991).
- Determination of wax concentration in sunflower seed oil
Journal of the American Oil Chemists' Society
Volume 77, Issue 10 , pp 1087-1093
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- Cold test
- isothermal crystallization
- optical setup
- sunflower oil
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