Sugar Profile Method by High-Performance Anion-Exchange Chromatography with Pulsed Amperometric Detection in Food, Dietary Supplements, Pet Food, and Animal Feeds: Interlaboratory Validation Study, Final Action 2018.16.

Background: A method for sugar profile analysis granted First Action 2018.16 was subjected to a multi-laboratory study.

Objective: Perform a multi-laboratory study with this method to determine the performance parameters of repeatability and reproducibility against the AOAC Standard Method Performance Requirements (AOAC SMPR 2018.001) for Final Action status.

Methods: Eleven laboratories from three different countries participated in the study. Each laboratory was provided practice materials for successful method setup. Each laboratory then proceeded with analysis of blind duplicates of 10 different products covering the scope of the method. Results were reported to the study directors with any modifications and assessed following the procedures of Appendix D of the AOAC Official Methods of AnalysisSM (guidelines for collaborative study procedures).

Results: The majority of results from the study met the SMPR requirements. The data is presented along with any outlying observations or modifications. The method was proven to be flexible across different instrumentation and laboratories, and the method was updated to provide further system suitability and guidelines to maintain the performance of the method across the large scope of matrixes.

Conclusion: The results from the collaborative study supported the method for Final Action status. The Expert Review Panel reviewed and voted to move the method forward to Final Action and was followed by review from the Official Methods Board and granted approval.

Highlights: The method was granted Final Action Official Methods status.