Valorisation of olive agro-industrial by-products as a source of bioactive compounds

The Science of the Total Environment
Beatriz GullónEulogio Castro

Abstract

A large amount of olive-derived biomass is generated yearly in Spain, which could be used as a potential source of bioactive compounds. The present work evaluates the recovery of natural antioxidants from olive tree pruning (OTP) and olive mill leaves (OML). For this purpose, the effect of different solvents on the total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activity was evaluated. The solvent was found to have a significant effect (p < 0.05) on the TPC, TFC, and the DPPH, ABTS, and FRAP activity, affording similar results for the extracts from the two by-products. The extracts obtained using 50% ethanol showed high TPC (23.85 and 27.54 mg GAE/gdw for OTP and OML, respectively) and TFC (52.82 and 52.39 mg RE/gdw for OTP and OML, respectively). Also, the OTP and OML extracts exhibited notable antioxidant activity as measured by the ABTS method (45.96 and 42.71 mg TE/gdw, respectively). Using pyrolysis-gas chromatography/mass spectrometry, 30 bioactive compounds were detected in both extracts. Additionally, UPLC-DAD-ESI-MS allowed the identification of 15 compounds in the samples. Furthermore, the antioxidant extracts were found to inhibit the growth of several food pathogenic bacteria. This resea...Continue Reading

Citations

May 30, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Francesca NicolìLuigi De Bellis
Oct 2, 2019·Food Science & Nutrition·Gabriella TamasiClaudio Rossi
Feb 11, 2021·Antioxidants·María de la Luz Cádiz-GurreaFrancisca Rodrigues
Jul 18, 2020·The Science of the Total Environment·Hang P VuLong D Nghiem
Feb 26, 2021·The Science of the Total Environment·A NcubeS Ulgiati
Aug 8, 2021·Foods·Mónica Sánchez-GutiérrezAlejandro Rodríguez
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Valentina Lo GiudiceLuigi Todaro
Nov 26, 2020·Food Research International·Patricia GullónJesus Simal-Gandara

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