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You searched for: Subject alginates Remove constraint Subject: alginates Subject algae Remove constraint Subject: algae
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1. Algae application in civil construction: A review with focus on the potential uses of the pelagic Sargassum spp. biomass

Author:
João Adriano Rossignolo; Afonso José Felicio Peres Duran; Cristiane Bueno; José Eduardo Martinelli Filho; Holmer Savastano Junior; Fernando Gustavo Tonin
Source:
Journal of environmental management 2022 v.303 pp. 114258
ISSN:
0301-4797
Subject:
Kappaphycus alvarezii; Posidonia oceanica; Sargassum; algae; alginates; biomass; bioplastics; coasts; cosmetics; environmental management; grasses; industry; paper; pavements; raw materials; Caribbean; Gulf of Mexico; Sargasso Sea
Abstract:
... Pelagic Sargassum, usually found at the Sargasso Sea and the Western portion of the North Atlantic and Gulf of Mexico, has been detected in many new locations through the tropical Atlantic. The huge biomass found from the African coast to the Caribbean was called the Great Atlantic Sargassum Belt and is responsible for the stranding of tons of algae on coastal regions. Despite the environmental, s ...
DOI:
10.1016/j.jenvman.2021.114258

2. Assembly and synthesis of the extracellular matrix in brown algae

Author:
Lisa Mazéas; Rina Yonamine; Tristan Barbeyron; Bernard Henrissat; Elodie Drula; Nicolas Terrapon; Chikako Nagasato; Cécile Hervé
Source:
Seminars in cell & developmental biology 2022 pp. -
ISSN:
1084-9521
Subject:
algae; alginates; biosynthesis; chemical composition; extracellular matrix; genes; glycosyltransferases; growth and development; models; sulfotransferases
Abstract:
... In brown algae, the extracellular matrix (ECM) and its constitutive polymers play crucial roles in specialized functions, including algal growth and development. In this review we offer an integrative view of ECM construction in brown algae. We briefly report the chemical composition of its main constituents, and how these are interlinked in a structural model. We examine the ECM assembly at the t ...
DOI:
10.1016/j.semcdb.2022.03.005

3. Brown algal cell walls and development

Author:
Steven Beuder; Siobhan A. Braybrook
Source:
Seminars in cell & developmental biology 2022 pp. -
ISSN:
1084-9521
Subject:
adhesion; algae; alginates; cell growth; cell walls; eukaryotic cells
Abstract:
... Brown algae are complex multicellular eukaryotes whose cells possess a cell wall, which is an important structure that regulates cell size and shape. Alginate and fucose-containing sulfated polysaccharides (FCSPs) are two carbohydrate types that have major roles in influencing the mechanical properties of the cell wall (i.e. increasing or decreasing wall stiffness), which in turn regulate cell exp ...
DOI:
10.1016/j.semcdb.2022.03.003

4. Effects of hydrogen peroxide on Scenedesmus obliquus: Cell growth, antioxidant enzyme activity and intracellular protein fingerprinting

Author:
Haihan Zhang; Rongrong Zong; Huiyan He; Tinglin Huang
Source:
Chemosphere 2022 v.287 pp. 132185
ISSN:
0045-6535
Subject:
Scenedesmus obliquus; algae; algicides; alginates; antioxidant enzymes; ascorbic acid; biochemical pathways; biosynthesis; catalase; cell growth; chlorophyll; enzyme activity; gene expression regulation; hydrogen peroxide; oxidative stress; photosynthesis; protein composition; protein-protein interactions; proteomics; superoxide dismutase
Abstract:
... Hydrogen peroxide (H₂O₂) is an environmental-friendly algicide and it is widely used to control algal blooms in aquatic ecosystems. However, the response of algal cell metabolic characteristics and intracellular protein profile under H₂O₂ stress is still not well understood. In the present study, the green alga Scenedesmus obliquus was exposed to different concentrations of H₂O₂ (0, 2, 6, 8 and 10 ...
DOI:
10.1016/j.chemosphere.2021.132185

5. Genome-wide transcriptome profiling and characterization of mannuronan C5-epimerases in Saccharina japonica

Author:
Zhang Pengyan; Lu Chang; Shao Zhanru; Liu Fuli; Yao Jianting; Duan Delin
Source:
Algal research 2021 v.60 pp. 102491
ISSN:
2211-9264
Subject:
Saccharina japonica; adults; algae; alginates; cell walls; genes; magnetism; research; transcriptome; transcriptomics
Abstract:
... Alginate is a linear polysaccharide comprised of 1,4-linked-β-D-mannuronic acid (M) and α-L-guluronic acid (G). As the major cell wall polysaccharide in brown algae, alginate is widely used in the food, pharmaceutical, and chemical industries. Mannuronan C5-epimerases (MC5Es) catalyze the specific conversion of M to its C-5 epimer G, playing a key role in the modification of alginate. In this stud ...
DOI:
10.1016/j.algal.2021.102491

6. Immobilized algae‐based treatment of herbicide‐contaminated groundwater

Author:
Sara Mollamohammada; Ashraf Aly Hassan; Mohamed Dahab
Source:
Water environment research 2021 v.93 no.2 pp. 263-273
ISSN:
1061-4303
Subject:
Scenedesmus; algae; alginates; ambient temperature; atrazine; gels; groundwater; magnesium; nitrates; oxadiazon; phosphorus; research; triallate; zinc
Abstract:
... Scenedesmus species, immobilized on alginate gel, was found effective in removing nitrate, atrazine, magnesium, phosphorus, zinc, oxadiazon, and triallate from groundwater in a continuous flow reactor. The laboratory‐scale experiments with synthetic groundwater, made of 8.8 mg/L NO₃‐N and 90 µg/L atrazine, were performed at a hydraulic retention time of 7 days and the temperatures of 20 and 35°C. ...
DOI:
10.1002/wer.1405

7. Seasonal patterns of growth, alginate content and block structure of the alien invader Sargassum muticum (Fucales, Ochrophyta) from the Atlantic coast of Morocco

Author:
Zahira Belattmania; Samir El Atouani; Fouad Bentiss; Charafeddine Jama; Annalisa Falace; Abdellatif Chaouti; Abdeltif Reani; Brahim Sabour
Source:
Botanica marina 2022 v.65 no.1 pp. 69-78
ISSN:
1437-4323
Subject:
Sargassum muticum; algae; alginates; autumn; coasts; harvest date; sexual maturity; sexual reproduction; spring; summer; thallus; vegetative growth; winter; Morocco
Abstract:
... In the present study, alginate yield and composition were investigated during the seasonal life cycle of the alien brown alga Sargassum muticum harvested from the Atlantic coast of Morocco. Alginate yield ranged from 11.14% in winter to 25.62% in spring/early summer, coinciding with maximum vegetative growth. Monthly monitoring of the alginate block structure showed that the highest mannuronate (M ...
DOI:
10.1515/bot-2021-0050

8. Substrate degradation pathways, conserved functions and community composition of the hindgut microbiota in the herbivorous marine fish Kyphosus sydneyanus

Author:
Sam J.R. Stevenson; Kevin C. Lee; Kim M. Handley; Esther R. Angert; W. Lindsey White; Kendall D. Clements
Source:
Comparative biochemistry and physiology 2022 v.272 pp. 111283
ISSN:
1095-6433
Subject:
Kyphosus; agar; algae; alginates; carrageenan; community structure; digestion; fucoidan; genes; herbivores; hindgut; intestinal microorganisms; mannitol; marine fish; metagenomics; mucosa; symbionts
Abstract:
... Symbiotic gut microbiota in the herbivorous marine fish Kyphosus sydneyanus play an important role in digestion by converting refractory algal carbohydrate into short-chain fatty acids. Here we characterised community composition using both 16S rRNA gene amplicon sequencing and shotgun-metagenome sequencing. Sequencing was carried out on lumen and mucosa samples (radial sections) from three axial ...
DOI:
10.1016/j.cbpa.2022.111283

9. Batch and column study on tetracycline removal using green synthesized NiFe nanoparticles immobilized alginate beads

Author:
Ravikumar K.V.G.; Hemamalathi Kubendiran; Kavitha Ramesh; Sonia Rani; Tapas Kumar Mandal; Mrudula Pulimi; Chandrasekaran Natarajan; Amitava Mukherjee
Source:
Environmental technology & innovation 2020 v.17 pp. 100520
ISSN:
2352-1864
Subject:
Punica granatum; adsorption; algae; alginates; aqueous solutions; bacteria; batch systems; biodegradability; cell viability; nanocomposites; nanoparticles; nickel; polyphenols; pomegranates; remediation; response surface methodology; tetracycline; toxicity
Abstract:
... In the current work, NiFe nanocomposite was synthesized using polyphenol rich pomegranate (Punica granatum) peel extract and NiFe was immobilized into biocompatible and biodegradable alginate to form NiFe nanocomposite beads (GS-NiFe beads). This study is a best ecofriendly approach for the effective removal of tetracycline (TC) from aqueous solutions. The factors influencing the removal were opti ...
DOI:
10.1016/j.eti.2019.100520

10. Boosted Cr(VI) sorption coupled reduction from aqueous solution using quaternized algal/alginate@PEI beads

Author:
Yue Zhang; Yayuan Mo; Thierry Vincent; Catherine Faur; Eric Guibal
Source:
Chemosphere 2021 v.281 pp. 130844
ISSN:
0045-6535
Subject:
algae; alginates; aqueous solutions; bioremediation; biosorbents; biosorption; chemical reduction; chromates; chromium; desorption; pH; polyethyleneimine; reaction kinetics; reaction mechanisms; sorption isotherms
Abstract:
... APEI beads (algal/alginate-PEI) were quaternized for enhancing the sorption of Cr(VI) (Q-APEI). The readily reduction of Cr(VI) into Cr(III) in acidic solution and in the presence of organic material constitute an additional phenomenon to be taken into account for the removal of Cr(VI) by Q-APEI. The optimal pH value for both the sorption and reduction of Cr(VI) was close to 2. The sorption isothe ...
DOI:
10.1016/j.chemosphere.2021.130844

11. Cellulosic material obtained from Antarctic algae biomass

Author:
Oscar G. Paniz; Claudio M. P. Pereira; Bruna S. Pacheco; Silvana I. Wolke; Guilherme K. Maron; Andrés Mansilla; Pio Colepicolo; Marcelo O. Orlandi; Alice G. Osorio; Neftali L. V. Carreño
Source:
Cellulose 2020 v.27 no.1 pp. 113-126
ISSN:
0969-0239
Subject:
Cystosphaera; Fourier transform infrared spectroscopy; X-ray diffraction; agar; algae; alginates; alkali treatment; biomass; bleaching; carrageenan; cellulose; cellulose nanofibers; crystal structure; drugs; freeze drying; raw materials; scanning electron microscopy; tissue engineering; Antarctic region
Abstract:
... Algae biomass is a raw material widely used by many industrial sectors, such as food production, pharmaceuticals, cosmetics, fertilizers, biofuels, and many others. Its usage is mainly due to the phycocolloids content, such as alginates, carrageenans, agar, etc. One of the polysaccharides present in this biomass, and still little explored is cellulose, an important resource with several technologi ...
DOI:
10.1007/s10570-019-02794-2

12. Potential Antiviral Properties of Industrially Important Marine Algal Polysaccharides and Their Significance in Fighting a Future Viral Pandemic

Author:
Renu Geetha Bai; Rando Tuvikene
Source:
Viruses 2021 v.13 no.9 pp. -
ISSN:
1999-4915
Subject:
Severe acute respiratory syndrome coronavirus 2; agar; algae; alginates; anticoagulants; carrageenan; dietary supplements; drug development; fucoidan; mechanism of action; pandemic; therapeutics; viruses
Abstract:
... Over the decades, the world has witnessed diverse virus associated pandemics. The significant inhibitory effects of marine sulfated polysaccharides against SARS-CoV-2 shows its therapeutic potential in future biomedical applications and drug development. Algal polysaccharides exhibited significant role in antimicrobial, antitumor, antioxidative, antiviral, anticoagulant, antihepatotoxic and immuno ...
DOI:
10.3390/v13091817

13. Review on marine carbohydrate-based gold nanoparticles represented by alginate and chitosan for biomedical application

Author:
Xiangyan Chen; Xia Zhao; Guixiang Wang
Source:
Carbohydrate polymers 2020 v.244 pp. 116311
ISSN:
0144-8617
Subject:
acetylation; agarose; algae; alginates; biocompatibility; biodegradability; cancer therapy; carboxylation; carrageenan; chitosan; drugs; fucoidan; image analysis; medicine; moieties; nanogold; neoplasms; optical properties
Abstract:
... Gold nanoparticles (AuNPs) have been attracted considerable attention in cancer therapy, drug delivery and other applications due to their unique physical, chemical, and optical properties. Marine carbohydrates are important biological macromolecules that widely exist in marine algae and animals, such as alginate, carrageenan, porphyran, fucoidan, ulvan, agarose, and chitosan. Their excellent prop ...
DOI:
10.1016/j.carbpol.2020.116311

14. Synthesis of bioactive silver nanoparticles using alginate, fucoidan and laminaran from brown algae as a reducing and stabilizing agent

Author:
Y.A. Yugay; R.V. Usoltseva; V.E. Silant'ev; A.E. Egorova; A.A. Karabtsov; V.V. Kumeiko; S.P. Ermakova; V.P. Bulgakov; Y.N. Shkryl
Source:
Carbohydrate polymers 2020 v.245 pp. 116547
ISSN:
0144-8617
Subject:
Fucus evanescens; Saccharina cichorioides; algae; alginates; antibacterial properties; catalytic activity; cytotoxicity; fucoidan; glioma; nanoparticles; nanosilver; neoplasm cells; rats; reducing agents; stabilizers
Abstract:
... In this report, polysaccharides – alginate, fucoidan, laminaran – were isolated from marine algae Saccharina cichorioides and Fucus evanescens and their activity as a reducing and stabilizing agents in the biogenic synthesis of silver nanoparticles was evaluated. The cytotoxic and antibacterial properties of obtained nanoparticles were also assessed. It was found that all tested polysaccharides co ...
DOI:
10.1016/j.carbpol.2020.116547

15. Two Benthic Diatoms, Nanofrustulum shiloi and Striatella unipunctata, Encapsulated in Alginate Beads, Influence the Reproductive Efficiency of Paracentrotus lividus by Modulating the Gene Expression

Author:
Francesca Glaviano; Nadia Ruocco; Emanuele Somma; Giuseppe De Rosa; Virginia Campani; Pasquale Ametrano; Davide Caramiello; Maria Costantini; Valerio Zupo
Source:
Marine drugs 2021 v.19 no.4 pp. -
ISSN:
1660-3397
Subject:
Paracentrotus lividus; Striatella; algae; alginates; embryogenesis; encapsulation; fractionation; gene expression; hydrogels; ingestion; metabolites; reproductive efficiency; stress response; viability
Abstract:
... Physiological effects of algal metabolites is a key step for the isolation of interesting bioactive compounds. Invertebrate grazers may be fed on live diatoms or dried, pelletized, and added to compound feeds. Any method may reveal some shortcomings, due to the leaking of wound-activated compounds in the water prior to ingestion. For this reason, encapsulation may represent an important step of bi ...
DOI:
10.3390/md19040230

16. Adsorption of Cu(II) Ions on Adsorbent Materials Obtained from Marine Red Algae Callithamnion corymbosum sp.

Author:
Alina Roxana Lucaci; Dumitru Bulgariu; Maria-Cristina Popescu; Laura Bulgariu
Source:
Water 2020 v.12 no.2 pp. -
ISSN:
2073-4441
Subject:
Callithamnion; adsorbents; adsorption; algae; alginates; aqueous solutions; batch systems; biomass; biosorption; dosage; effluents; extraction; ions; iron; moieties; nanoparticles; pH; renewable resources; temperature; water
Abstract:
... In recent years, studies on the more efficient use of natural materials in adsorption processes have increased significantly. Thus, obtaining new adsorbents from marine algae biomass with higher adsorptive performance will ensure a better use of these renewable resources. In this study, the adsorption of Cu(II) ions from aqueous solution was done using three types of adsorbent materials obtained f ...
DOI:
10.3390/w12020372

17. Advances in the biorefinery of Sargassum muticum: Valorisation of the alginate fractions

Author:
N. Flórez-Fernández; H. Domínguez; M.D. Torres
Source:
Industrial crops and products 2019 v.138 pp. 111483
ISSN:
0926-6690
Subject:
Sargassum muticum; algae; alginates; autohydrolysis; biodiversity; biorefining; data collection; depolymerization; fucose; models; nutrients; polymers; recreation; solvents; temperature; viscoelasticity
Abstract:
... Sargassum muticum is an invasive brown seaweed that causes a negative impact on ecology, fishing and recreational activities, and was also associated with changes in biodiversity by competing for light, space and nutrients with autochthonous algae. Marine brown seaweeds contain different valuable components, such as alginate, fucose rich sulfated polysaccharides (known as fucoidans) and phlorotann ...
DOI:
10.1016/j.indcrop.2019.111483

18. Antioxidant and Antitumoral Properties of Aqueous Fractions from Frozen Sargassum muticum

Author:
Patricia Pérez-Larrán; Elena M. Balboa; María Dolores Torres; Herminia Domínguez
Source:
Waste and biomass valorization 2020 v.11 no.4 pp. 1261-1269
ISSN:
1877-2641
Subject:
Sargassum muticum; algae; alginates; antioxidants; autohydrolysis; cytotoxicity; ethyl acetate; inhibitory concentration 50; liquid-liquid extraction; liquids; pressing; sap; thawing; viscoelasticity
Abstract:
... A novel multistage water-based process was evaluated for the production of sap and other liquid fractions from frozen Sargassum muticum in an attempt to propose an integral and yearly-around utilization of this invasive alga. Three aqueous extracts including (i) the defrosting liquid phase, (ii) the sap liquid obtained by pressing and (iii) the autohydrolysis extract from the solid residue remaini ...
DOI:
10.1007/s12649-018-0456-x

19. Detection and isolation of low molecular weight alginate- and laminaran-susceptible gut indigenous bacteria from ICR mice

Author:
Moemi Naito Takei; Takashi Kuda; Miyu Taniguchi; Saori Nakamura; Takahashi Hajime; Bon Kimura
Source:
Carbohydrate polymers 2020 v.238 pp. 116205
ISSN:
0144-8617
Subject:
Bacteroides acidifaciens; Firmicutes; Phaeophyceae; algae; alginates; bacteria; cecum; diet; lactic acid; mice; microbiome; molecular weight; ribosomal DNA; sequence analysis; succinic acid; water solubility
Abstract:
... Alginate and laminaran are the main water-soluble polysaccharides in edible brown algae such as arame Eisenia bicyclis. To determine the alginate- and/or laminaran-susceptible indigenous bacteria (SIB) in the gut, the caecal microbiomes of ICR mice fed a diet containing 2% low molecular weight (LMW ≒50 kDa) alginate or laminaran were analysed by 16S rRNA gene (V4) amplicon sequencing. At the phylu ...
DOI:
10.1016/j.carbpol.2020.116205

20. Ecofriendly extraction of bioactive fractions from Sargassum muticum

Author:
María P. Casas; Enma Conde; Herminia Domínguez; Andrés Moure
Source:
Process biochemistry 2019 v.79 pp. 166-173
ISSN:
1359-5113
Subject:
Sargassum muticum; algae; alginates; antioxidant activity; ascorbic acid; cytotoxicity; enzymatic treatment; enzyme activity; enzymes; feedstocks; fibroblasts; humans; melanoma; mice; solubilization; ultrasonics; unsaturated fatty acids
Abstract:
... An ecofriendly process based on an enzyme-assisted extraction coupled with ultrasound extraction was proposed to obtain soluble bioactive fractions from Sargassum muticum. Whole algae (Sm) and residual algae from alginate production (AESm) were employed as feedstock. Aqueous enzyme treatment with commercial complex enzyme formulations or with mixture of enzymes lead to maximum solubilization yield ...
DOI:
10.1016/j.procbio.2018.12.021