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Article

Improved Extraction Efficiency of Antioxidant Bioactive Compounds from Tetraselmis chuii and Phaedoactylum tricornutum Using Pulsed Electric Fields

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Department of Nutrition and Feed Technology, Nofima AS, 5141 Bergen, Norway
2
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
*
Authors to whom correspondence should be addressed.
Academic Editor: Ireneusz Kapusta
Molecules 2020, 25(17), 3921; https://doi.org/10.3390/molecules25173921
Received: 13 July 2020 / Revised: 12 August 2020 / Accepted: 25 August 2020 / Published: 27 August 2020
(This article belongs to the Special Issue Bioactive Compounds of Fruits, Vegetables and Mushrooms)
Pulsed electric fields (PEF) is a promising technology that allows the selective extraction of high-added value compounds by electroporation. Thus, PEF provides numerous opportunities for the energy efficient isolation of valuable microalgal bioactive substances (i.e., pigments and polyphenols). The efficiency of PEF-assisted extraction combined with aqueous or dimethyl sulfoxide (DMSO) solvents in recovering pigments and polyphenols from microalgae Tetraselmis chuii (T. chuii) and Phaeodactylum tricornutum (P. tricornutum) was evaluated. Two PEF treatments were applied: (1 kV/cm/400 pulses, 3 kV/cm/45 pulses), with a specific energy input of 100 kJ/kg. The total antioxidant capacity (TAC) was positively influenced by the use of DMSO. The highest TAC in the T. chuii culture was achieved at a lower extraction time and electric field than for P. tricornutum. The use of DMSO only improved the polyphenols′ extraction for P. tricornutum, whereas the PEF and extraction time were more important for T. chuii. Carotenoids and chlorophyll a were more efficiently extracted using DMSO, while chlorophyll b levels were higher following aqueous extraction for both microalgae. In P. tricornutum, the TAC and pigment extraction efficiency were in general higher at lower extraction times. It can be concluded that PEF may be a promising alternative for the enhancement of the selective extraction of antioxidant bioactive compounds from microalgae. View Full-Text
Keywords: pulsed electric fields; Tetraselmis chuii; Phaeodactylum tricornutum; antioxidant bioactive compounds; extraction pulsed electric fields; Tetraselmis chuii; Phaeodactylum tricornutum; antioxidant bioactive compounds; extraction
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MDPI and ACS Style

Kokkali, M.; Martí-Quijal, F.J.; Taroncher, M.; Ruiz, M.-J.; Kousoulaki, K.; Barba, F.J. Improved Extraction Efficiency of Antioxidant Bioactive Compounds from Tetraselmis chuii and Phaedoactylum tricornutum Using Pulsed Electric Fields. Molecules 2020, 25, 3921. https://doi.org/10.3390/molecules25173921

AMA Style

Kokkali M, Martí-Quijal FJ, Taroncher M, Ruiz M-J, Kousoulaki K, Barba FJ. Improved Extraction Efficiency of Antioxidant Bioactive Compounds from Tetraselmis chuii and Phaedoactylum tricornutum Using Pulsed Electric Fields. Molecules. 2020; 25(17):3921. https://doi.org/10.3390/molecules25173921

Chicago/Turabian Style

Kokkali, Marialena, Francisco J. Martí-Quijal, Mercedes Taroncher, María-José Ruiz, Katerina Kousoulaki, and Francisco J. Barba. 2020. "Improved Extraction Efficiency of Antioxidant Bioactive Compounds from Tetraselmis chuii and Phaedoactylum tricornutum Using Pulsed Electric Fields" Molecules 25, no. 17: 3921. https://doi.org/10.3390/molecules25173921

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