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Supercritical extraction of bilberry (Vaccinum myrtillus L.) seed oil: Fatty acid composition and antioxidant actvitiy

Graziele Gustinelli (Institutionen för biologi och bioteknik) ; Lovisa Eliasson ; Cecilia Svelander (Institutionen för biologi och bioteknik, Livsmedelsvetenskap) ; Marie Alminger (Institutionen för biologi och bioteknik, Livsmedelsvetenskap) ; Lilia Ahrné
Journal of Supercritical Fluids (0896-8446). Vol. 135 (2018), p. 91-97.
[Artikel, refereegranskad vetenskaplig]

Bilberry seed oils extracted with supercritical carbon dioxide (SC-CO2) for 80 min at 20, 35, and 50 MPa and at 40°, 50° and 60 °C were evaluated to compare the yield, composition, and antioxidant recovery. Analyses of fatty acids, free radical scavenging activity (DPPH), vitamin E and peroxide contents revealed that yield, vitamin E, efficient concentration (EC50), and Peroxide value (PV) varied significantly among the obtained bilberry seed oils, whereas the fatty acid compositions were similar. The oil extracted at 20 MPa and 60 °C had the best recovery of vitamin E and the lowest EC50 and PV. The high levels of vitamin E and polyunsaturated fatty acids, as well as the low ω6/ω3 ratios (<1) and the low PVs in all the extracts suggest bilberry seed oil is a valuable source of bioactive compounds and high potential for use of bilberry by-product extracts in added value foods and nutraceutical products.

Nyckelord: Supercritical CO2 extraction, Bilberry seeds, Antioxidant activity, Vitamin E, Radical scavening

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Denna post skapades 2018-01-10.
CPL Pubid: 254384