Paper Published: Extraction of high value products from avocado waste biomass

The paper 'Extraction of high value products from avocado waste biomass' by Patrícia R.S. Páramos, José F.O. Granjo, Marcos L. Corazza and Henrique A. Matos has been published at The Journal of Supercritical Fluids.

This work studies the oil extraction and recovery of bioactive compounds from Brazilian and Mexican avocado seeds and peels of Hass cultivar using Soxhlet (SE) with hexane, ethanol, and ethyl acetate as solvents; and supercritical carbon dioxide (scCO₂) with ethanol and ethyl acetate as cosolvents. Also, the fatty acids (FAs) profile, total phenolic content (TPC), and antioxidant activity (AA) in avocado seeds measured. Finally, the dynamic extraction curves of scCO₂ were modeled with a multi-way partial least squares regression (MPLSR). The highest extraction yields were observed when ethanol is used as solvent in SE (up to 14 wt%) and as cosolvent in scCO₂ (up to 6.9 wt%). TPC was higher in SFE of avocado seeds, while higher values of AA were obtained using SE. MPLSR model obtained for the scCO₂ extraction showed an average absolute deviation below 0.5 wt% for 360 measurements using only eight factors.

Patrícia R.S. Páramos, José F.O. Granjo, Marcos L. Corazza, Henrique A. Matos (2020). Extraction of high value products from avocado waste biomass, The Journal of Supercritical Fluids, 104988, DOI: 10.1016/j.supflu.2020.104988.