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Biochemical composition, nutritional value, and antioxidant properties of seven seaweed species from the Madeira Archipelago
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Orientador(es)
Resumo(s)
Biochemical composition and antioxidant activity
were assessed in seven seaweeds from Madeira Archipelago,
namely, the chlorophyte (Ulva lactuca), the rhodophytes
(Asparagopsis taxiformis, Chondrus crispus, Galaxaura rugosa,
Grateloupia lanceola and Nemalion elminthoides), and the
phaeophyte (Zonaria tournefortii). Seaweed mineral content varied
from 16.60 to 84.16 g (100 g)-1 dry weight (dw). Organic
matter, composed by fiber and matrix polysaccharides (8.33 to
54.04 g (100 g)-1 dw), starch (1.95 to 25.41 g (100 g)-1 dw),
protein (2.80 to 17.55 g (100 g)-1 dw), and fat (1.46 to 12.04
g (100 g)-1 dw), was also determined. Asparagopsis taxiformis
was found to have substantial quantities of protein, fat, fiber, and
matricial polysaccharides, compared to the other analyzed seaweeds.
Analysis of antioxidant components included the measurement
of chlorophyll a (28.81 to 244.3 g (100 g)-1 dw), total
carotenoids (0 to 297.8 g (100 g)-1 dw), total phenolic compounds
(0 to 2154 mg GAE (100 g)-1 dw), and total flavonols
(7.27 to 604.8 mg QE (100 g)-1 dw). Zonaria tournefortii was
found to possess the highest contents of chlorophyll a, total
carotenoids, total phenolic content (TPC), and antioxidant activity,
determined through ferric reduction antioxidant potential
(FRAP), ferrous ion chelating (FIC), free radical-scavenging assay
(FRSA), and β-carotene bleaching (β-CB). Statistical analysis
showed 38 significant correlations between various biochemical
and antioxidant parameters or activity and determined
that fat content showed the highest number of correlations.
Overall, this study gives a better understanding of Madeira autochthonous
seaweeds in their potential of being introduced as a
raw material for nutrient supplementation in various food products
or to produce functional foods using seaweed natural
properties.
Descrição
Palavras-chave
Total carotenoids Antioxidant activity Nutritional and biochemical evaluation TPC Flavonols Chlorophyll Madeira Archipelago (Portugal) . Faculdade de Ciências da Vida
Contexto Educativo
Citação
Nunes, N., Ferraz, S., Valente, S., Barreto, M. C., & Carvalho, M. P. (2017). Biochemical composition, nutritional value, and antioxidant properties of seven seaweed species from the Madeira Archipelago. Journal of Applied Phycology, 29(5), 2427-2437. 10.1007/s10811-017-1074-x
Editora
Springer