Antioxidant activity of extracts from marine macroalgae, wild-collected and cultivated, in an integrated multi-trophic aquaculture system

Vega, Julia; Álvarez‐Gómez, Félix; Güenaga, Leire; Figueroa, Félix L.; Gómez‐Pinchetti, Juan Luis

doi:10.1016/j.aquaculture.2020.735088

Cited by 56 publications

(43 citation statements)

References 80 publications

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“…The N content obtained in this study varied between 2.5 and 4.5% in red macroalgae and between 3.5 and 8.5% in cyanobacteria. Similar results were obtained by other authors in collected macroalgae [ 36 , 37 ]. In microalgae and cyanobacteria, the N percentage can also vary depending on the phase of the culture [ 38 ].…”

Section: Discussionsupporting

confidence: 92%

“…Considering the red macroalgae, the highest antioxidant activity was reached in the species O. pinnatifida , P. umbilicalis and C. rubrum . Other authors also found a high antioxidant activity in the order Ceramiales (where O. pinnatifida and C. rubrum belong), Gracilariales and Bangiales [ 37 , 58 , 97 , 107 ].…”

Section: Discussionmentioning

confidence: 97%

“…More recently, they have also been studied for their photoprotective applications [ 53 , 54 , 55 ]. Brown algae are the main producers of these compounds, however, cyanobacteria and red algae can also produce phenols, although in less quantity [ 37 ]. In this work, it was possible to find an optimization of phenolics extraction when different solvents were utilized.…”

Section: Discussionmentioning

confidence: 99%

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Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications

et al. 2020

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In recent years, research on natural products has gained considerable attention, particularly in the cosmetic industry, which is looking for new bio-active and biodegradable molecules. In this study, cosmetic properties of cyanobacteria and red macroalgae were analyzed. The extractions were conducted in different solvents (water, ethanol and two combinations of water:ethanol). The main molecules with antioxidant and photoprotective capacity were mycosporine-like amino acids (MAAs), scytonemin and phenolic compounds. The highest contents of scytonemin (only present in cyanobacteria) were observed in Scytonema sp. (BEA 1603B) and Lyngbya sp. (BEA 1328B). The highest concentrations of MAAs were found in the red macroalgae Porphyra umbilicalis, Gelidium corneum and Osmundea pinnatifida and in the cyanobacterium Lyngbya sp. Scytonema sp. was the unique species that presented an MAA with maximum absorption in the UV-B band, being identified as mycosporine-glutaminol for the first time in this species. The highest content of polyphenols was observed in Scytonema sp. and P. umbilicalis. Water was the best extraction solvent for MAAs and phenols, whereas scytonemin was better extracted in a less polar solvent such as ethanol:dH2O (4:1). Cyanobacterium extracts presented higher antioxidant activity than those of red macroalgae. Positive correlations of antioxidant activity with different molecules, especially polyphenols, biliproteins and MAAs, were observed. Hydroethanolic extracts of some species incorporated in creams showed an increase in the photoprotection capacity in comparison with the base cream. Extracts of these organisms could be used as natural photoprotectors improving the diversity of sunscreens. The combination of different extracts enriched in scytonemin and MAAs could be useful to design broad-band natural UV-screen cosmeceutical products.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

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Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications

et al. 2020

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“…The highest phenolic and sulfate content were observed at 190°C, but the protein content was similar between 150 and 190°C. The magnitudes of above components were consistent with those previously reported for carrageenophyte red seaweeds using MAE-assisted treatments [28] or conventional alkaline/acid treatments [40,41,42]. A dramatic increase in the ABTS radical scavenging capacity was observed at 190°C, more marked than the rise in the phenolic content.…”

Section: Composition Of Microwave-treated Soluble Extractssupporting

confidence: 90%

The microwave assisted extraction sway on the features of antioxidant compounds and gelling biopolymers from Mastocarpus stellatus

2020

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Microwave assisted water extraction of hybrid carrageenan and antioxidant compounds from Mastocarpus stellatus red alga was first proposed to recover biopolymers with specific rheological properties, saving time, avoiding chemicals and enhancing extraction yields when compared with conventional treatments. The hybrid carrageenans, precipitated from the liquid fractions recovered after microwave assisted water extraction were analyzed by Fourier transform infrared attenuated total reflectance, high-performance size-exclusion chromatography and rheology. The corresponding soluble extracts were also characterized by total phenolic content, antioxidant capacity, proteins, sulfate and carbohydrate content. The highest phenolic, antioxidant capacity and sulfate content were observed at 190°C, without notable effect of heating time between 3 and 6 min. In contrast, a clear impact of both microwave heating temperature and time on the molecular weight distribution of hybrid carrageenans as well as on the viscoelastic behavior of formulated hydrogels was identified, being the strongest hydrogels achieved at 170°C for 6 min. It should be highlighted that all proposed hydrogels exhibited stable mechanical properties in the absence of syneresis for a month of cold storage, except those made with biopolymers obtained with the mildest extraction conditions (3 min at 70°C).

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“…Antioxidant activity of phlorotannins, extracted from the different brown algae species, was demonstrated in vitro [ 7 , 8 ]. Some polyphenolic compounds also exhibiting antioxidant effect, such as catechins, flavonols and flavonol glycosides, have been identified in methanol extracts of red and brown algae [ 9 , 10 , 11 ]. The recent studies have shown the significant contribution of phenolic compounds in cardiovascular and cancer prevention and assume their important role in the neurodegenerative and diabetes mellitus prevention [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Polyphenolic Content in Brown Algae of the Pacific Coast of Russia

et al. 2020

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Water and ethanol brown macroalgal extracts of nine species of Laminariales and four species of Fucales of the Pacific coast of Russia were investigated. It has been shown that brown algae species of Agarum, Thalassiophyllum, Fucus and Cystoseira can be a source of the polyphenolic compounds with antioxidant activity. Phenolic content in the ethanol algal extracts (Undaria pinnatifida, Arthrothamnus bifidus, Thalassiophyllum clathrus and Agarum turneri) was 1.1–3.5 times higher than in the water extracts. In Sargassum pallidum and Kjellmaniella crassifolia, the total polyphenolic content was 2.1 and 1.6 times higher, respectively, in water extracts than in ethanol extracts. The maximum radical scavenging activity has been detected in Agarum turneri ethanol extracts (38.8 mg ascorbic acid/g and 2506.8 µmol Trolox equiv/g dry algae). Phlorotannin content varies from 16.8 μg/g dry sample of Costaria costata to 2763.2 μg/g dry sample of Agarum turneri. It is found the content of polyphenolic compounds in brown algae is determined mainly by their species-specificity and by their belonging to the genus. The presence of major phenols in the extract of Thalassiophyllum clathrus, such as phenolic acid (gallic acid), hydroxycinnamic acids (caffeic acid, chlorogenic acid, coumaric acid) and flavonols (kaempferol, quercetin) has been established.

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Antioxidant activity of extracts from marine macroalgae, wild-collected and cultivated, in an integrated multi-trophic aquaculture system

Cited by 56 publications

References 80 publications

Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications

Cyanobacteria and Red Macroalgae as Potential Sources of Antioxidants and UV Radiation-Absorbing Compounds for Cosmeceutical Applications

The microwave assisted extraction sway on the features of antioxidant compounds and gelling biopolymers from Mastocarpus stellatus

Characteristics of Polyphenolic Content in Brown Algae of the Pacific Coast of Russia

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