Does the Standardized DGF‐IUPAC‐AOAC Method for Polar Compound Determination in Frying Fats Allow to Separate all the Altered Compounds?

With the standardized method for polar compound determination in frying fats, the cyclic monomers were found in the apolar fraction as well in the polar one. Moreover some compounds are not eluted from the column; the amount of these non‐eluted products increases with the oil degradation state. These observations raise some questions about the nutritional experiments carried out with this type of fractionation.