Utilization of pomace oil production by-products to produce olive bioactive-specific enriched extracts and in-depth chemical characterization thereof.

During pomace oil production several by-products are produced in mills and specifically wet olive pomace, dried olive pomace, exhausted olive cake, olive pomace skin and olive stones. According to the type of by-product, they are characterized by the presence of different classes of olive bioactive compounds, such as simple phenols and phenolic acids, secoiridoids, flavonoids, lignans and triterpenic acids [1]. However, despite their high commercial interest there is only a limited number of studies regarding their detail chemical composition and the targeted recovery of bioactives. Thus, the initial aim of this work is the detailed chemical investigation of these by-products using HPLC-DAD, LC-HRMS & HRMS/MS and HPTLC analytical methods. Moreover, selective extraction and separation protocols were developed and applied to produce chemical class-specific enriched extracts, employing Ultrasound Assisted Extraction (UAE) and Fast Centrifugal Partition Chromatography (FCPC) techniques among others. Overall, in the context of the present study, it was possible to produce extracts enriched in secoiridoids or triterpenes or simple phenols from different types of olive pomace by-products which could have potential applications in the food, cosmetic and pharmaceutical industry.

Publikationsverlauf

Artikel online veröffentlicht:
13. Dezember 2021

• References

• 1 Ribeiro TB. et al. Appl. Sci. 2020, 10, 6785