Volume 55, Issue 1 p. 303-312
Original Article

Investigation of nutraceutical potential of the microalgae Chlorella vulgaris and Arthrospira platensis

Joana Matos

Joana Matos

Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Rua Alfredo Magalhães Ramalho, 6, Lisbon, 1495-006 Portugal

Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 16, Lisbon, 1749-016 Portugal

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Carlos L. Cardoso

Corresponding Author

Carlos L. Cardoso

Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Rua Alfredo Magalhães Ramalho, 6, Lisbon, 1495-006 Portugal

CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, Porto, 4050-123 Portugal

Correspondent: E-mail: [email protected]Search for more papers by this author
Pedro Falé

Pedro Falé

Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 16, Lisbon, 1749-016 Portugal

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Cláudia M. Afonso

Cláudia M. Afonso

Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Rua Alfredo Magalhães Ramalho, 6, Lisbon, 1495-006 Portugal

CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, Porto, 4050-123 Portugal

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Narcisa M. Bandarra

Narcisa M. Bandarra

Division of Aquaculture and Upgrading (DivAV), Portuguese Institute for the Sea and Atmosphere (IPMA, IP), Rua Alfredo Magalhães Ramalho, 6, Lisbon, 1495-006 Portugal

CIIMAR, Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Rua dos Bragas 289, Porto, 4050-123 Portugal

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First published: 07 July 2019
Citations: 30

Summary

The microalgae Chlorella vulgaris and Arthrospira platensis were evaluated as nutraceuticals. It was observed that Arthrospira platensis is richer in saturated fatty acids (FA) and Chlorella vulgaris richer in monounsaturated FA. Within polyunsaturated FA (PUFA), n3 PUFA content was below 1% in Arthrospira sp and over 10% in Chlorella vulgaris. This microalga had the lowest polyphenolic content. The highest value was found in the aqueous extract of Arthrospira platensis, 334 ± 32 mg GAE per 100 g dw. Regarding DPPH, only aqueous extracts of Chlorella vulgaris yielded antioxidant activity with an inhibitory activity of 80 ± 1%. ABTS results showed stronger inhibition through the aqueous extracts than through the ethanolic extracts, 89%–93% vs. 24%–32%. Concerning cytotoxicity, ethanolic extracts of Chlorella vulgaris induced a cell viability decrease of approximately 80%. The biochemical characterisation and bioactivity assessment of Chlorella vulgaris and Arthrospira platensis showed that these microalgae have potential for nutraceutical applications.

Conflict of interest

No conflict of interest.