ISO 6464:1983

Animal and vegetable fats and oils — Determination of gallates content — Molecular absorption spectrometric method

Other antioxidants which can be detected and identified by the method specified in ISO 5558, may interfere and give high results. The principle of the method is selective extraction of each gallats from a test portion by means of appropriate solvents and determination by ultraviolet spectrometric measurement, in the following order: – propyl gallate, – octyl gallate, – dodecyl gallate.