Enhancing the bioaccessibility of lycopene from tomato processing byproducts via supercritical carbon dioxide extraction

Authors

Ali Ubeyitogullari, University of Nebraska-Lincoln
Ozan N. Ciftci, University of Nebraska-LinclnFollow

Date of this Version

2-25-2022

Citation

A. Ubeyitogullari and O.N. Ciftci. Current Research in Food Science 5 (2022) 553–563. https://doi.org/10.1016/j.crfs.2022.01.020

Comments

open access

Abstract

Tomato peel and seed from tomato processing industry are treated as waste; however, they contain lycopene, a high-value bioactive compound. In this study, lycopene was extracted from tomato peel and seed using supercritical carbon dioxide (SC–CO₂) and hexane, and the bioaccessibilities of lycopene in the SC-CO₂- and hexaneextracted oleoresins were investigated for the first time. The (Z)-lycopene content of the SC-CO₂-extracted oleoresin (69%) was higher than that of hexane-extracted oleoresin (45%). Separation of the insoluble fraction from the oleoresins increased the (Z)-lycopene contents of the SC-CO₂- and hexane-extracted oil fractions to 80% and 49%, respectively. The bioaccessibility of total-lycopene in the oleoresins was increased by 3.3-fold via SCCO₂ extraction, which was attributed to higher (Z)-lycopene content, and small-sized uniform distribution of lycopene in the oleoresin. SC-CO₂ extraction is not only a green method for extraction of bioactive compounds, but also has the potential to improve health benefits of bioactive compounds.