Tag: Orac assay

According to the USDA, the ORAC method for testing antioxidant capacity was withdrawn from official publications in 2012 due to a lack of evidence linking in-vitro results directly to in-vivo health benefits. However, the ORAC assay procedure continues to be utilized in various research fields and for commercial product comparisons.

According to research published in the journal *Nutritional Composition and Antioxidant Properties of Fruits and Vegetables*, the antioxidant activity of plant extracts can vary dramatically based on the extraction method and assay used. This guide provides a detailed look at how to do antioxidant activity assays in a laboratory setting, focusing on the most common spectrophotometric methods to determine a sample's antioxidant potential.