Extraction of Lipophilic Components from Rowanberry (Sorbus Aucuparia L.) Pomace with Supercritical Co2 and Their Fractionation at Subcritical Conditions at Low Temperatures

24 Pages Posted: 30 Mar 2023

See all articles by Viive Sarv

Viive Sarv

Estonian University of Life Sciences

Petras Rimantas Venskutonis

Kaunas University of Technology

Laura Tamkutė

Kaunas University of Technology

Renata Baranauskienė

Kaunas University of Technology

Dalia Urbonavičienė

affiliation not provided to SSRN

Pranas Viškelis

affiliation not provided to SSRN

Rajeev Bhat

Estonian University of Life Sciences

Abstract

Rowanberry pomace lipids were extracted with supercritical CO2 (42.4 MPa, 53 °C) using 3-7% of a co-solvent ethanol and fractionated by reducing 1st separator’s (S1) pressure to 7 MPa and cooling to 0, -10 and -20 °C for precipitating ‘heavier’ fraction (HF). The second separator (S2) was depressurized at ambient temperature for collecting ‘lighter’ fraction (LF). The yield of LF increased by decreasing S1 temperature and increasing the amount of a co-solvent. The concentration of β-carotene increased in LF by decreasing S1 temperature and increasing co-solvent concentration; at -20 °C it was by 66.7% higher than in the non-fractionated extract. The concentrations of tocopherols and phytosterols were also remarkably higher in LF. In total, 62 compounds were identified in the headspace volatile fraction of LF, benzaldehyde and benzyl alcohol being the most abundant constituents. In conclusion, fractionation enabled obtaining the fractions with the higher concentration of selected lipophilic rowanberry constituents.

Keywords: Sorbus aucuparia, berry pomace, supercritical CO2, co-solvent, Separation, fractions, Volatile components

Suggested Citation

Sarv, Viive and Venskutonis, Petras Rimantas and Tamkutė, Laura and Baranauskienė, Renata and Urbonavičienė, Dalia and Viškelis, Pranas and Bhat, Rajeev, Extraction of Lipophilic Components from Rowanberry (Sorbus Aucuparia L.) Pomace with Supercritical Co2 and Their Fractionation at Subcritical Conditions at Low Temperatures. Available at SSRN: https://ssrn.com/abstract=4404726 or http://dx.doi.org/10.2139/ssrn.4404726

Viive Sarv (Contact Author)

Estonian University of Life Sciences ( email )

Friedrich Reinhold Kreutzwaldi 1
Tartu, 51014
Estonia

Petras Rimantas Venskutonis

Kaunas University of Technology ( email )

Lithuania

Laura Tamkutė

Kaunas University of Technology ( email )

Lithuania

Renata Baranauskienė

Kaunas University of Technology ( email )

Lithuania

Dalia Urbonavičienė

affiliation not provided to SSRN ( email )

No Address Available

Pranas Viškelis

affiliation not provided to SSRN ( email )

No Address Available

Rajeev Bhat

Estonian University of Life Sciences ( email )

Friedrich Reinhold Kreutzwaldi 1
Tartu, 51014
Estonia

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