Abstract
A new TLC method (3M PCT120) to measure the amount of polar compounds in deteriorated frying oil was developed and launched in Europe. In the new method, a specific dye spotted on a thin layer silica gel plate moves up in proportion to the amount of polar compounds in deteriorated frying oil which is used as a developing solvent. To assess the new method, the amounts of polar compounds in five heated oils were measured by the HPLC method, and the traveling distances of the dye were also measured by 3M PCT120. The result showed a fairly close correlation between the traveling distance of the dye and the amount of polar compounds detected by the HPLC method with a correlation coefficient larger than 0.94.
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