Free radical scavenging activity of extracts from seaweeds Macrocystis pyrifera and Undaria pinnatifida: applications as functional food in the diet of prawn Artemesia longinaris

Abstract

ABSTRACT. Water-soluble extracts from seaweeds Macrocystis pyrifera (M) and Undaria pinnatifida (U) were prepared to use the polysaccharide bioactive fraction as functional food. Chemical analysis showed that the main components of both extracts were mannitol and fucoidans. Also in both cases minor amounts of rhamnose, glucose, xylose and arabinose were determine. Content of fucose+galactose was higher in U. pinnatifida (8.7%) than in M. pyrifera (5.9%). Extracts were used as feed additive to Artemesia longinaris at inclusion levels of 1 and 2% (M1 and M2; U1 and U2), a diet without extract was used as control. Radical scavenging activities were estimated for two extracts and for midgut gland samples of experimental animals. Scavenging activity was detected in both extracts, the signal decayed to 50 and 62% in 18 min for U. pinnatifida and M. pyrifera, respectively. After 30 days of feeding, results did not show variation of survival, but growth was improved in animals fed with U1 and U2. Supplementation with 1 and 2% of U. pinnatifida showed similar quenching capacity of homogenates than those fed with M2 with a rapid 1,1-diphenylpicrylhydrazyl (DPPH) decay at 2 min of reaction. Recommended concentration for culture A. longinaris is 2%, as it is that produce the best antioxidant capacity, although the growth performance was improved also significantly only with U. pinnatifida extract.

Comparison Study on Polysaccharide Fractions from Laminaria japonica: Structural Characterization and Bile Acid Binding Capacity

“…A series of bands in the region 1300–500 cm –1 due to the C–O–S and SOS stretching vibrations (1258, 965, 850, 820, and 686 cm –1 ) for the sulfate group were observed, which is a characteristic component in fucoidans of brown seaweeds . Compared with LP-A4 and LP-A6, the broad asymmetric absorption bands in 1258, 965, 850, and 686 cm –1 indicated the presence of abundant sulfate groups in LP-A8, which was in accordance with their structure characterization in Table .…”

Nutraceutical Potential of Seaweed Polysaccharides: Structure, Bioactivity, Safety, and Toxicity

“…Water‐soluble polysaccharides of M. pyrifera and U. pinnatifida have shown radical scavenging activity in midgut gland homogenates isolated from the prawn Artemesia longinaris , and they have been recommended as functional feeds for the enhancement of average weight and specific growth rate when included in the diets of Penaeus monodon (Díaz et al., ; Niu et al., ). A sulfated polysaccharide extract from the red seaweed Laurencia papillosa , composed of κ‐ and λ‐carrageenans, has been shown to exhibit dose‐dependent antiproliferative activity toward the human breast cancer cell line MCF‐7.…”

Utilization of marine macroalgae‐derived sulphated polysaccharides as dynamic nutraceutical components in the feed of aquatic animals: A review

“…Moreover, dietary fucoidan (derived from Macrocystis pyrifera and Undaria pinnatifida ) also significantly enhanced the growth and radical scavenging activity of prawns ( Artemesia longinaris ) (Díaz et al, 2017). However, the survival rate was not changed remarkably compared with the control (Díaz et al, 2017). Additionally, the crayfish ( P. clarkia ) (fed a 30 mg/kg diet of fucoidan) showed significantly higher WSSV multiplication inhibition capability and survival against WSSV infection than the control and other groups fed with either 20 or 40 mg/kg of fucoidan (Jin et al, 2021).…”

“…Additionally, a study by Arizo et al (2015) illustrated that the fucoidan derived from S. polycystum (at 0.5 g/kg diet) increased the growth, THC, PO, and survivability of Macrobrachium rosenbergii after a 28‐day feeding period. Moreover, dietary fucoidan (derived from Macrocystis pyrifera and Undaria pinnatifida ) also significantly enhanced the growth and radical scavenging activity of prawns ( Artemesia longinaris ) (Díaz et al, 2017). However, the survival rate was not changed remarkably compared with the control (Díaz et al, 2017).…”