CEN/WS AGRO2CIRCULAR
Guidelines for characterization of extracts for the recycling/upcycling of organic agrifood wastes

The planned workshop intends to specify the methodologies for the analysis of aqueous natural antioxidant extracts obtained from wastes and by-products of the agri-food industry. These methodologies encompass the determination of total polyphenols content, total flavonoid content and antioxidant activity assessment through colorimetric assays employing various techniques. The method for quantifying total polyphenol content involves the use of the Folin-Ciocalteau reagent, while the total flavonoid content is determined using the aluminium chloride method. Multiple methods for evaluating antioxidant activity are described, including ABTS, DPPH, and FRAP assays. The planned document is applicable to aqueous extracts obtained from agri-food waste and by-products, specifically those originated from vegetables and fruits. Depending on the specific matrix and composition of the extract, it may be necessary to employ different methods for characterizing these extracts.

National mirror committee of CEN/WS AGRO2CIRCULAR