Optimization of ultrasound-assisted extraction of bioactive compounds from Pelvetia canaliculata to sunflower oil

Sousa, Gabriela (avtor), Trifunovska, Marija (avtor), Antunes, Madalena (avtor), Miranda, Isabel (avtor), Moldão, Margarida (avtor), Alves, Vítor (avtor), Vidrih, Rajko (avtor), Lopes, Paula Allen (avtor), Aparicio, Luis (avtor), Neves, Marta (avtor), Tecelão, Carla (avtor), Ferreira-Dias, Suzana (avtor)

In this study, Pelvetia canaliculata L. macroalga, collected from the Atlantic Portuguese coast, was used as a source of bioactive compounds, mostly antioxidants, to incorporate them in sunflower oil with the aim of increasing its biological value and oxidative stability. The lyophilized alga was added to the oil, and ultrasound-assisted extraction (UAE) was performed. Algae concentration and UAE time varied following a central composite rotatable design (CCRD) to optimize extraction conditions. The following parameters were analyzed in the oils: oxidation products, acidity, color, chlorophyll pigments, carotenoids, flavonoids, total phenolic content, antioxidant activity by DPPH (2,2-diphenyl-1-picrylhydrazyl) and FRAP (ferric reducing antioxidant power) assays, and sensory analysis. Extraction conditions did not affect the acidity and the amount of oxidation products in the oil. Chlorophylls and carotenoid contents increased with algae concentration, while flavonoid extraction did not depend on algae content or UAE time. Total phenolics in the oil were highly related only to FRAP antioxidant activity. Storage experiments of supplemented oil (12.5% algae; 20 min UAE) were carried out under accelerated oxidation conditions at 60 °C/12 days. Antioxidant activity (FRAP) of supplemented oil was 6-fold higher than the value of non-supplemented oil. Final samples retained 40% of their initial antioxidant activity. The presence of algae extracts contributed to the increased oxidative stability of sunflower oil.

• Jezik: Angleški jezik
• Ključne besede: algae, antioxidants, bioactive compounds, oxidative stability, Pelvetia canaliculata, response surface methodology, sunflower oil, ultrasound-assisted extraction
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2021
• Št. strani: 20 str.
• Številčenje: Vol. 10, iss. 8, art. 1732
• PID: 20.500.12556/RUL-136012
• UDK: 664.3.094.3.097.8:582.27
• ISSN pri članku: 2304-8158
• DOI: 10.3390/foods10081732
• COBISS.SI-ID: 72211971
• Datum objave v RUL: 06.04.2022

Gradivo je del revije

• Naslov: Foods
• Skrajšan naslov: Foods
• Založnik: MDPI
• ISSN: 2304-8158
• COBISS.SI-ID: 512252472

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 01.08.2021

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: alge, Pelvetia canaliculata, bioaktivne spojine, antioksidanti, sončnično olje, oksidativna stabilnost

Projekti

• Financer: Drugi - Drug financer ali več financerjev
• Program financ.: Portugal, Direção-Geral de Política do Mar, Fundo Azul
• Številka projekta: FA_05_2017_013
• Naslov: Integrated approach for seaweeds application as sustainable source of functional compounds for edible oils stabilization and food processing
• Akronim: Ocean2Oils