AOAC SPDS Set 2 ERP

Method Review Form AOAC INTERNATIONAL Standards Development

Name of Reviewer: Joseph Zhou Title of Method: Modified Folin−Ciocalteu Antioxidant Capacity Assay for Measuring Lipophilic Antioxidants AOAC Candidate Method Number: FOL-03 Applicable SMPR :

I. SUMMARY OF METHOD

This is a modified Folin-Ciocalteu method that is able to measure both hydrophilic and lipophilic antioxidants.

II. REVIEW OF THE METHOD ONLY:

1. Does the applicability of the method support the applicability of the SMPR? If no, please explain what is missing.

This method does not meet the SMPR: 1) The method is for the measurement of total antioxidant capacity, not total phenolic content; 2)Analytical range is shorter; 3)No RSDr data at low concentration < 5ppm; 4) No RSDR data.;

2. Does the analytical technique(s) used in the method meet the SMPR? If no, please specify what how it differs from what is stated in the SMPR.

I think this is a very good method, but some data as required in the SMPR are not available.