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Quantitative differential scanning calorimetric analysis for determining total polar compounds in heated oils

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Journal of the American Oil Chemists’ Society

Abstract

A new differential scanning calorimetry (DSC) method was developed for the determination of total polar compounds (TPC) in heated oils. Three different types of edible oils, refined, bleached, and deodorized corn oil (CO), palm olein (RBDPO), and soybean oil (SO), were used in this study, Each type of edible oil was heated at 180°C in a deep fryer to obtain a range of TPC concentrations. In this study, the cooling thermograms of oil samples at a scanning rate of 1°C/min from −30 to −85°C showed a well-defined single crystallization peak. The study found that six DSC parameters, namely, peak temperature (PT), enthalpy (EN), onset (ON) and offset (OF) temperatures, peak height (HT), and the range of temperatures (RT) (the difference between onset and offset temperature) of this single crystallization peak could predict well the TPC of heated oils by using stepwise multiple linear regression analysis. These six parameters were used as independent variables while values from standard method were used as dependent variables. The coefficient of determination (R 2) of calibration models for CO, RBDPO, and SO were 0.9996, 0.9709, and 0.9980, respectively. Calibration models were validated with an independent set of samples. The R 2 of validation models were 0.9995, 0.9559, and 0.9961, respectively. Based on the results obtained, DSC appears to be useful instrumental method in determining the TPC of edible oils, and it may have the potential to replace the time- and chemical-consuming standard method.

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References

  1. White, P.J., Methods for Measuring Changes in Deep-Fat Frying Oils, Food Technol. 45:75–80 (1991).

    CAS  Google Scholar 

  2. Chung, T.Y., J.P. Eiserich, and T. Shibamoto, Volatile Compounds Identified in Headspace Samples of Peanut Oil Heated under Temperatures Ranging from 50 to 200°C, J. Agric. Food Chem. 41:1467–1470 (1993).

    Article  CAS  Google Scholar 

  3. Wu, C.M., and S.Y. Chen, Volatile Compounds in Oils After Deep Frying or Stir-Frying and Subsequent Storage, J. Am. Oil Chem. Soc. 69:858–865 (1992).

    Article  CAS  Google Scholar 

  4. Gardner, D.R., R.A. Sanders, D.E. Henry, D.H. Tallmadge, and H.W. Wharton, Characterization of Used Frying Oils. Part 1: Isolation and Identification of Compound Classes, Ibid.:499–508 (1992)

    CAS  Google Scholar 

  5. Gere, A., Study of the Changes in Edible Fats During Heating and Frying, Die Nahrung 26:923–926 (1982).

    Article  CAS  Google Scholar 

  6. Clark, W.L., and G.W. Serbia, Safety Aspects of Frying Fats and Oils, Food Technol. 45(2):84–86,88,89,94 (1991).

    Google Scholar 

  7. Robards, K., A.F. Kerr, and E. Patsalides, Rancidity and Its Measurement in Edible Oils and Snack Foods, Analyst 113:213–222 (1988).

    Article  CAS  Google Scholar 

  8. Fritsch, C.W., Measurements of Frying Fat Deterioration: A Brief Review, J. Am. Oil Chem. Soc. 58:272–274 (1981).

    Article  CAS  Google Scholar 

  9. Paul, S., and G.S. Mittal, Regulating the Use of Degraded Oil/Fat in Deep-Fat/Oil Food Frying, Crit. Rev. Food Sci. Nutr. 37:635–662 (1997).

    Article  CAS  Google Scholar 

  10. Blumenthal, M.M., A New Look at the Chemistry and Physics of Deep-Fat Frying, Food Technol. 45(2):68–71,72 (1991).

    Google Scholar 

  11. Firestone, D., R.F. Stier, and M.M. Blumenthal, Regulation of Frying Fats and Oils, Ibid.(2):90–94 (1991).

    Google Scholar 

  12. AOCS, Official Methods and Recommended Practices of the American Oil Chemists’ Society, 4th edn., AOCS Press, Champaign, 1993, Method Cd 20–91.

    Google Scholar 

  13. Pokorný, J., Flavor Chemistry of Deep Fat Frying in Oil, in Flavor Chemistry of Lipid Foods, edited by D.B. Min, and T.H. Smouse, American Oil Chemists Society, Champaign, 1989, pp. 113–155.

    Google Scholar 

  14. Blumenthal, M.M., Frying Technology, in Bailey’s Industrial Oil and Fat Products, 5th edn., edited by Y.H. Hui, John Wiley & Sons, Inc., New York, Vol. 3 1996, pp. 429–482.

    Google Scholar 

  15. Herrera, M.L. and M.C. Anon, Crystalline Fractionation of Hydrogenated Sunflowerseed Oil. II. Differential Scanning Calorimetry (DSC), J. Am. Oil Chem. Soc. 68:799–803 (1991).

    Article  CAS  Google Scholar 

  16. Kawamura, K., The DSC Thermal Analysis of Crystallization Behavior in Palm Oil, Ibid.:753–758 (1979).

    Article  CAS  Google Scholar 

  17. Md. Ali, A.R., and P.S. Dimick, Thermal Analysis of Palm Mid-Fraction, Cocoa Butter, and Milk Fat Blends by Differential Scanning Calorimetry, Ibid.:299–302 (1994).

    Article  Google Scholar 

  18. Jacobsberg, B., and O.C. Ho, Studies in Palm Oil Crystallization, Ibid.:609–617 (1976).

    Article  Google Scholar 

  19. Melton, S.L., S. Jafar, D. Sykes, and M.K. Trigiano, Review of Stability Measurements for Frying Oils and Fried Food Flavor, Ibid.:1301–1308 (1994).

    Article  CAS  Google Scholar 

  20. Biliaderis, C.G., Differential Scanning Calorimetry in Food Research—A Review, Food Chem. 10:239–265 (1983).

    Article  CAS  Google Scholar 

  21. Dollimore, D., Thermal Analysis, Anal. Chem. 68:63R-71R (1996).

    Article  Google Scholar 

  22. Haryati, T., Y.B. Che Man, A.B. Asbi, H.M. Ghazali, and L. Buana, Determination of Iodine Value of Palm Oil by Differential Scanning Calorimetry, J. Am. Oil Chem. Soc. 74:939–942 (1997).

    Article  CAS  Google Scholar 

  23. Walker, R.C., and W.A. Bosin, Comparison of SFI, DSC, and NMR Methods for Determining Solid-Liquid Ratios in Fats. Ibid.:50–53 (1971).

    Article  CAS  Google Scholar 

  24. Sessa, D.J., T.C. Nelsen, R. Kleiman, and J.D. Arquette, Differential Scanning Calorimetry Index for Estimating Level of Saturation in Transesterified Wax Esters, Ibid.:271–273 (1996).

    Article  Google Scholar 

  25. 7 Series/UNIX DSC7 Users Manual, Version 4.0, Perkin Elmer Corporation, Norwalk, CT, 1995.

  26. SAS, Statistical Analysis System User’s Guide: Basic Statistics, SAS Institute, Cary, 1989.

    Google Scholar 

  27. Barbano, P., and J.W. Sherbon, Phase Behavior of Tristearin/Trioctanoin Mixtures, J. Am. Oil Chem. Soc. 55:478–481 (1978).

    Article  CAS  Google Scholar 

  28. Hagemann, J.W., and W.H. Tallent, Differential Scanning Calorimetry of Single Acid Triglycerides: Effect of Chain Length and Unsaturation, Ibid.:119–123 (1972).

    Article  Google Scholar 

  29. Berger, K.G., and E.E. Akehurst, Some Application of Differential Thermal Analysis to Oils and Fats, J. Food Technol. 1:237–247 (1966).

    Article  CAS  Google Scholar 

  30. Che Man, Y.B., and P.Z. Swe, Thermal Analysis of Failed-Batch Palm Oil by Differential Scanning Calorimetry, J. Am. Oil Chem. Soc. 72:1529–1532 (1995).

    Article  CAS  Google Scholar 

  31. Miller, J.N., Outliers in Experimental Data and Their Treatment, Analyst 118:455–461 (1993).

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Food Technology, Faculty of Food Science and Biotechnology, Universiti Putra Malaysia, 43400 UPM, Serdang, Malaysia

    C. P. Tan & Y. B. Che Man

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  1. C. P. Tan
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  2. Y. B. Che Man
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Correspondence to Y. B. Che Man.

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Tan, C.P., Che Man, Y.B. Quantitative differential scanning calorimetric analysis for determining total polar compounds in heated oils. J Am Oil Chem Soc 76, 1047–1057 (1999). https://doi.org/10.1007/s11746-999-0203-3

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  • DOI: https://doi.org/10.1007/s11746-999-0203-3

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