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Extraction of lipophilic components from rowanberry (Sorbus aucuparia L.) pomace with supercritical CO2 and their fractionation at subcritical conditions at low temperatures

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Pisipilt

Kuupäev

2024

Kättesaadav alates

Autorid

Sarv, Viive
Venskutonis, Petras Rimantas
Tamkutė, Laura
Baranauskienė, Renata
Urbonavičienė, Dalia
Viškelis, Pranas
Bhat, Rajeev

Ajakirja pealkiri

Ajakirja ISSN

Köite pealkiri

Kirjastaja

SSRN

Abstrakt

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.
This work is supported by Plantvalor Project “PlantValor–full-scale product development service in synergy with the traditional activities of Polli Horticultural Research Centre 2020–2023”, which has received funding from the European Regional Development Fund; and by ERA Chair in VALORTECH project, which has received funding from the European Union’s Horizon 2020 Research and Innovation Program under grant agreement No. 810630. In addition, funding was received from Mobilitas Pluss ERA-Chair support (Grant No. MOBEC006 ERA Chair for Food (By-) Products Valorisation Technologies of the Estonian University of Life Sciences). The authors also acknowledge Estonian Ministry of Rural Affairs for the programmes "Collection, Conservation and Utilization of Plant Genetic Resources in 2021–2027”.

Kirjeldus

Märksõnad

Sorbus aucuparia, berry pomace, supercritical CO2, co-solvent, separation, fractions, volatile components, articles

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