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Article

Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae

Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés, s/n 46100 Burjassot (València), Spain
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Academic Editor: Monica Gallo
Appl. Sci. 2021, 11(4), 1701; https://doi.org/10.3390/app11041701
Received: 31 January 2021 / Revised: 7 February 2021 / Accepted: 8 February 2021 / Published: 14 February 2021
(This article belongs to the Collection Ultrasound in Extraction Processing)
In recent years, a growing interest has been shown in the use of microalgae due to their interesting nutritional and bioactive profiles. Green innovative processing technologies such as ultrasound-assisted extraction (UAE) avoid the use of toxic solvents and high temperatures, being a sustainable alternative in comparison with traditional extraction methods. The present study aims to evaluate the recovery of high added-value compounds from Phaedoactylum tricornutum assisted by ultrasound. To optimize the UAE of proteins, carbohydrates, pigments and antioxidant compounds, a response surface methodology was used. Carbohydrate extraction was positively affected by the temperature. However, for the extraction of carotenoids, the most influential factor was the extraction time. The total polyphenols were only significantly affected by the extraction time. Finally, the antioxidant capacity, measured by 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS), was strongly modulated by the extraction time, while for the oxygen radical antioxidant capacity (ORAC) assay, the most important parameter was the temperature, followed by the extraction time. The optimal conditions for the maximum extraction of nutrients, bioactive compounds and antioxidant capacity were 30 min, 50 ºC and a pH of 8.5. Finally, it has been seen that with these conditions, the extraction of fucoxanthin is allowed, although no differences were found between an ultrasound-assisted extraction and a shaking extraction (control). View Full-Text
Keywords: microalgae; ultrasounds; bioactive compounds; nutrients; extraction; optimization; Phaeodactylum tricornutum microalgae; ultrasounds; bioactive compounds; nutrients; extraction; optimization; Phaeodactylum tricornutum
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MDPI and ACS Style

Khawli, F.A.; Martí-Quijal, F.J.; Pallarés, N.; Barba, F.J.; Ferrer, E. Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae. Appl. Sci. 2021, 11, 1701. https://doi.org/10.3390/app11041701

AMA Style

Khawli FA, Martí-Quijal FJ, Pallarés N, Barba FJ, Ferrer E. Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae. Applied Sciences. 2021; 11(4):1701. https://doi.org/10.3390/app11041701

Chicago/Turabian Style

Khawli, Fadila A., Francisco J. Martí-Quijal, Noelia Pallarés, Francisco J. Barba, and Emilia Ferrer. 2021. "Ultrasound Extraction Mediated Recovery of Nutrients and Antioxidant Bioactive Compounds from Phaeodactylum tricornutum Microalgae" Applied Sciences 11, no. 4: 1701. https://doi.org/10.3390/app11041701

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