Naslov
Maximizing the Antioxidant Capacity of Padina Pavonica by Choosing the Right Drying and Extraction Methods

Autori
Čagalj, Martina ; Skroza, Danijela ; Tabanelli, Giulia ; Ozogul, Fatih ; Šimat, Vida

Izvornik
Processes (2227-9717) 9 (2021), 4; 587, 16

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Padina pavonica ; brown algae ; ultrasound‐assisted extraction ; microwave‐assisted ex‐ traction ; antioxidant activity ; green extraction ; phenolic compounds

Sažetak
Marine algae are becoming an interesting source of biologically active compounds with a promising application as nutraceuticals, functional food ingredients, and therapeutic agents. The effect of drying (freeze‐drying, oven‐drying, and shade‐ drying) and extraction methods (shaking at room temperature, shaking in an incubator at 60 °C, ultrasound‐assisted extraction (UAE), and microwave‐assisted extraction (MAE)) on the total phenolics content (TPC), total flavonoids content (TFC), and total tannins content (TTC), as well as antioxidant capacity of the water/ethanol extracts from Padina pavonica were investigated. The TPC, TFC, and TTC values of P. pavonica were in the range from 0.44 ± 0.03 to 4.32 ± 0.15 gallic acid equivalents in mg/g (mg GAE/g) dry algae, from 0.31 ± 0.01 to 2.87 ± 0.01 mg QE/g dry algae, and from 0.32 ± 0.02 to 10.41 ± 0.62 mg CE/g dry algae, respectively. The highest TPC was found in the freeze‐dried sample in 50% ethanol, extracted by MAE (200 W, 60 °C, and 5 min). In all cases, freeze‐dried samples extracted with ethanol (both 50% and 70%) had the higher antioxidant activity, while MAE as a green option reduces the extraction time without the loss of antioxidant activity in P. pavonica.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

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