A modified VERI-FRY® quick test for measuring total polar compounds in deep-frying oils

Journal of the American Oil Chemists' Society - Tập 76 - Trang 1087-1089 - 1999
Xin-Qing Xu1
1Food Science Australia, Melbourne Site, Werribee, Australia

Tóm tắt

The AOCS official method for the determination of total polar compounds in deep-frying oils is often used to estimate frying oil degradation. It can be accurate and reliable, but with sacrifices of time and expense. The TPM VERI-FRY® PRO (Libra Technologies, Inc., Metuchen, NJ) quick test provides a quick and easy way to measure polar compounds in frying oils. The modified quick test measured at 490 nm has a good correlation with the AOCS official method (r=0.975, P<0.001) and provides a good estimate of polar compound accumulation in oils over 80 h of deep-frying. Using the quick test to measure polar compounds is fast, convenient, economical and reliable.

Tài liệu tham khảo

Melton, S.L., S. Jafar, D. Sykes, and M.K. Trigiano, Review of Stability Measurements for Frying Oils and Frying Food Flavor, J. Am. Oil Chem. Soc. 71:1301–1308 (1994). Blumenthal, M.M., The Chemistry and Technology of Deep-Fat Frying, Food Technol. 45:68–71 (1991). Chu, Y.-H., A Comparative Study of Analytical Methods for Evaluation of Soybean Oil Quality, J. Am. Oil Chem. Soc. 68:379–384 (1991). White, P.J., Methods for Measuring Changes in Deep-Fat Frying Oils, Food Technol. 45:75–83 (1991). Stier, R.F., and M.M. Blumenthal, Quality Control in Deep-Fat Frying, Baking and Snack February:76–77 (1993). Firestone, D., Worldwide Regulation of Frying Fats and Oils, INFORM 4:1366–1371 (1993). Xu, X.-Q., H. Tran, M. Palmer, K. White, and P. Salisbury, Monitoring Deep Frying Performance of Monola and Monosun Oils, Food Austr. 51:157–163 (1999). Sebedio, J.L., C. Septier, and A. Grandgirard, Fractionation of Commercial Frying Oil Samples Using Sep-Pak Catridges, J. Am. Oil Chem. Soc. 63:1541–1543 (1986). Xu, X.-Q., H. Tran, M. Palmer, K. White, and P. Salisbury, Chemical and Physical Analyses and Sensory Evaluation of Six Deep Frying Oils, J. Am. Oil Chem. Soc. 76:1091–1099 (1999). Official Methods and Recommended Practices of the American Oil Chemists’ Society, 5th edn., edited by D. Firestone, AOCS Press, Champaign, 1998, Method Cd 20–91. Blumenthal, M.M., A Comparison and Evaluation of Tests Designed to Measure the Quality of Restaurant Frying Oils, Libra Laboratories, Inc., Metuchen, NJ, 1993, p. 30.