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Облучинская, Екатерина Дмитриевна; Воскобойников, Г. М.; Galynkin, V. A.

doi:10.1023/a:1014374903448

Cited by 20 publications

(8 citation statements)

References 4 publications

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“…Therefore, the more exposed seaweeds are to waves and turbulent conditions, the greater their alginic acid production [59]. Furthermore, concentrations of alginic acid in F. vesicuslosus , F. serratus and F. distichus were found to be 2–3 times higher in the summer (23.97%, 21.80% and 20.60% DW, respectively) than in the spring (8.40%, 10.45% and 9.55% DW, respectively), indicating that the accumulation of these polysaccharides in this genus is highly dependent on seasonality [42]. …”

Section: Nutrient Composition Of Fucus Sppmentioning

confidence: 99%

Phycochemical Constituents and Biological Activities of Fucus spp.

2018

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Seaweeds are known to be a good supply of key nutrients including carbohydrates, protein, minerals, polyunsaturated lipids, as well as several other health-promoting compounds capable of acting on a wide spectrum of disorders and/or diseases. While these marine macroalgae are deeply rooted in the East Asian culture and dietary habits, their major application in Western countries has been in the phycocolloid industry. This scenario has however been gradually changing, since seaweed consumption is becoming more common worldwide. Among the numerous edible seaweeds, members of the genus Fucus have a high nutritional value and are considered good sources of dietary fibers and minerals, especially iodine. Additionally, their wealth of bioactive compounds such as fucoidan, phlorotannins, fucoxanthin and others make them strong candidates for multiple therapeutic applications (e.g., antioxidant, anti-inflammatory, anti-tumor, anti-obesity, anti-coagulant, anti-diabetes and others). This review presents an overview of the nutritional and phytochemical composition of Fucus spp., and their claimed biological activities, as well as the beneficial effects associated to their consumption. Furthermore, the use of Fucus seaweeds and/or their components as functional ingredients for formulation of novel and enhanced foods is also discussed.

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Section: Nutrient Composition Of Fucus Sppmentioning

confidence: 99%

Phycochemical Constituents and Biological Activities of Fucus spp.

2018

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“…Table 1 presents the yields of polysaccharides. Table 1 shows that the principal polysaccharide from the studied algae was alginic acid (greater than 12% for both algae), the content of which depended on the species, season, latitude, and ecological habitat [5]. According to the literature, the content of alginic acids in algae of the genus Sargassum varies from 3 to 17% [6,7].…”

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confidence: 94%

Composition, structural characteristics, and antitumor properties of polysaccharides from the brown algae Dictyopteris polypodioides and Sargassum sp.

et al. 2011

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The polysaccharide compositions of the brown algae Dictyopteris polypodioides and Sargassum sp. from the Mediterranean Sea were determined. The principal polysaccharide of the studied algae (about 12% of the dry alga weight) was alginic acid. The content of water-soluble polysaccharides was low. The amount of fucoidan was less than 1% of the dry alga weight; of neutral polysaccharides, less than 0.25%. The monosaccharide compositions of fucoidans and neutral polysaccharides were investigated. Experiments on soft agar-agar models showed that fucoidans from D. polypodioides and Sargassum sp. exhibited antitumor activity against RPMI-7951 human melanoma cells.The search for biologically active compounds from natural sources is currently of great interest. Polysaccharide-type compounds exhibit a broad spectrum of biological activity and low in vivo toxicity.Brown algae contain compounds with structures that differ from those in red and green algae and terrestrial plants. Mannitol and comparatively low-molecular-weight 1,3;1,6-E-D-glucans (laminarans) act as reserve material in them [1]. Salts of alginic acids (alginates) [2] and complex sulfonated polysaccharides (fucoidans) [3,4] occur in cell walls and intercellular space. The latter exhibit a broad spectrum of biological activity. Structure-activity relationships of the polysaccharides are rather difficult to establish because their structures are heterogeneous, irregular, branched, and highly sulfonated.The goal of the present work was to study the composition, structural characteristics, and antitumor activity of polysaccharides from the Mediterranean algae Dictyopteris polypodioides and Sargassum sp.Alginic acids, neutral polysaccharides, and fucoidans were isolated from these brown algae. Dried and ground algae were treated with EtOH (70%) to remove low-molecular-weight compounds and then extracted with HCl solution. The extract containing water-soluble polysaccharides was concentrated, dialyzed, and placed on a column with the hydrophobic sorbent Polychrom-1. Charged polysaccharides (Dp-F and S-F) were eluted by H 2 O; neutral polysaccharides, by aqueous EtOH (5 and 15%) to afford fractions Dp-5%, Dp-15%, S-5%, and S-15%. Remaining algae were extracted by Na 2 CO 3 solution. The extracts were dialyzed. Alginic acid was precipitated by three times the volume of EtOH (96%) to afford Dp-A and S-A. Fractions Dp-F and S-F contained fucoidans after Polychrom-1 and were separated over a column of Macro-Prep DEAE to afford Dp-F1, Dp-F2, Dp-F3, and Dp-F4 and S-F1, S-F2, S-F3, and S-F4, which were lyophilized to produce alginic acids, neutral polysaccharides, and fucoidans. Table 1 presents the yields of polysaccharides. Table 1 shows that the principal polysaccharide from the studied algae was alginic acid (greater than 12% for both algae), the content of which depended on the species, season, latitude, and ecological habitat [5]. According to the literature, the content of alginic acids in algae of the genus Sargassum varies from 3 to 17% [6,7]. The studied alga coul...

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“…Unfortunately, their use is hampered by problems with obtaining products with standard properties because the content and structural characteristics of the polysaccharides vary depending on the habitat and collection season [4]. Furthermore, the relationship between structural features and the biological activity of the polysaccharides, especially fucoidans, is poorly studied.The search for accessible sources of biologically active polysaccharides and the study of seasonal variations of their polysaccharide composition in order to determine the optimal collection time and to obtain preparations with standard properties are currently critical [5,6]. This information is required for industrial harvesting of alga.…”

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confidence: 99%

“…The search for accessible sources of biologically active polysaccharides and the study of seasonal variations of their polysaccharide composition in order to determine the optimal collection time and to obtain preparations with standard properties are currently critical [5,6]. This information is required for industrial harvesting of alga.…”

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confidence: 99%

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Seasonal variations of the composition, structural features, and antitumor properties of polysaccharides from Padina pavonica (Lebanon) as a function of composition

et al. 2012

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The variation of the polysaccharide composition of the brown alga Padina pavonica from the Mediterranean Sea was studied as a function of the collection season (April-July). It was shown that the principal polysaccharide (8.0-13.3% of dry alga weight) was alginic acid. Its content did not undergo significant changes from April to July. The content of water-soluble polysaccharides (laminarans and fucoidans) was low (<0.3% of dry alga weight). Water-soluble polysaccharides of the studied alga were practically pure fucoidan. The amount of laminarans was insignificant (<0.01% of dry alga weight). The content of fucoidans increased in alga samples from May through July. It was shown that P. pavonica is a promising source of alginic acids, which have a high capacity for gelation, and fucoidans, which exhibit antitumor action against RPMI-7951 human melanoma cells.Brown algae were a valuable source of polysaccharides such as alginic acids [1], fucoidans [2], and laminarans [3]. These compounds exhibit a broad spectrum of biological activity and low in vivo toxicity. Unfortunately, their use is hampered by problems with obtaining products with standard properties because the content and structural characteristics of the polysaccharides vary depending on the habitat and collection season [4]. Furthermore, the relationship between structural features and the biological activity of the polysaccharides, especially fucoidans, is poorly studied.The search for accessible sources of biologically active polysaccharides and the study of seasonal variations of their polysaccharide composition in order to determine the optimal collection time and to obtain preparations with standard properties are currently critical [5,6]. This information is required for industrial harvesting of alga.Brown algae of the genus Padina (Dictyotaceae) are widely distributed in the seas of Russia, Lebanon, India, Thailand, and other countries [7-9]. The properties of algal polysaccharides of this family (Lobophora variedata, Dictyota menstrualis, Spatoglossum schroederi, Stoechospermum marginatum, Padina gymnospora, and P. tetrastromatica) were studied. They were interesting as compounds with a broad spectrum of biological activity, e.g., antioxidant, anticoagulant, antithrombic, and antiviral properties [9][10][11][12]. It was also reported that polysaccharides from the brown alga P. pavonia (pavonica) exhibit anticoagulant activity [13].The goal of our work was to study the composition and structural characteristics of polysaccharides from P. pavonica from the Mediterranean Sea as a function of collection time and to determine the antitumor activity of the isolated fucoidans.Alginic acids, laminarans, and fucoidans were isolated using a modification of the published method [14] from P. pavonica collected on the shores of the Mediterranean Sea (Lebanon, Batroun Bay) in April-July 2009 (N 34 15.069c; E 035 39.385c). The modification consisted of selecting the sequence of separation steps (hydrophobic and anion-exchange chromatography) depending on the mo...

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Cited by 20 publications

References 4 publications

Phycochemical Constituents and Biological Activities of Fucus spp.

Phycochemical Constituents and Biological Activities of Fucus spp.

Composition, structural characteristics, and antitumor properties of polysaccharides from the brown algae Dictyopteris polypodioides and Sargassum sp.

Seasonal variations of the composition, structural features, and antitumor properties of polysaccharides from Padina pavonica (Lebanon) as a function of composition

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