The application of Former Food Products (FFPs) as feed ingredients is already documented in
swine, as well as their beneficial nutritional value. To date, FFPs extra-nutritional bioactive effect
in feed has not been elucidated. Therefore, the aim of the present study was to investigate and
compare the total phenolic content and antioxidant capacity (AOC) in six samples of FFPs
extracted by different solvent systems. After methanol and acetone extraction, total phenolic
content and AOC were determined in FFPs and wheat sample (CTR) using Folin–Ciocalteu and
2,2’-azinobis (3-ethylbenzothiazoline 6-sulfonic acid)-ABTS assay, respectively. Results demonstrated
that FFPs samples were characterised by an average amount of total phenolic content of
129.3 ± 15.1mg tannic acid equivalents (TAE)/100g in methanol extracts and 156.4 ± 25.8mg
TAE/100g in acetone extracts. Whereas, the ABTS assay revealed that FFPs showed also anAOC
of 138.0 ± 14.3mg Trolox Equivalent (TE)/100 g in methanol extracts and 173.3 ± 18.8mg TE/
100 g in acetone extracts. Former Food Products represent relevant sources of phenols and antioxidant
compounds, which can be beneficial for animal health.