U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject Sargassum muticum Remove constraint Subject: Sargassum muticum Subject alginates Remove constraint Subject: alginates Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
Start Over

Search

15  Search Results

1 - 15 of 15
Number of results to display per page

Search Results

1. Acetone Precipitation of Heterofucoidans from Sargassum muticum Autohydrolysis Extracts

Author:
Valeria Acevedo-García; Noelia Flórez-Fernández; Marta López-García; José Manuel López Vilariño; Herminia Domínguez; María Dolores Torres
Source:
Waste and biomass valorization 2021 v.12 no.2 pp. 867-877
ISSN:
1877-2641
Subject:
Sargassum muticum; acetone; adenocarcinoma; alginates; autohydrolysis; biomass; colon; cytotoxicity; fucoidan; humans; oligosaccharides; solubilization; sulfates; viscoelasticity; viscosity; wastes
Abstract:
... The brown seaweed Sargassum muticum was processed by non isothermal autohydrolysis under conditions selected to maximize fucoidan solubilization (170 °C). Acetone precipitation was tried for recovery of fucose-containing oligosaccharides present in hydrolyzates. The acetone:hydrolyzate volume ratio influenced both yields and composition of the precipitated fractions. The sugar components were most ...
DOI:
10.1007/s12649-020-01044-y

2. On the Health Benefits vs. Risks of Seaweeds and Their Constituents: The Curious Case of the Polymer Paradigm

Author:
João Cotas; Diana Pacheco; Glacio Souza Araujo; Ana Valado; Alan T. Critchley; Leonel Pereira
Source:
Marine drugs 2021 v.19 no.3 pp. -
ISSN:
1660-3397
Subject:
Calliblepharis; Gracilaria; Sargassum muticum; agar; alginates; carrageenan; dietary supplements; economic sustainability; human nutrition; macroalgae; polymers; summer; winter
Abstract:
... To exploit the nutraceutical and biomedical potential of selected seaweed-derived polymers in an economically viable way, it is necessary to analyze and understand their quality and yield fluctuations throughout the seasons. In this study, the seasonal polysaccharide yield and respective quality were evaluated in three selected seaweeds, namely the agarophyte Gracilaria gracilis, the carrageenophy ...
DOI:
10.3390/md19030164

3. 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

4. Seaweeds’ carbohydrate polymers as plant growth promoters

Author:
Diana Pacheco; João Cotas; Carolina P. Rocha; Glacio S. Araújo; Artur Figueirinha; Ana M.M. Gonçalves; Kiril Bahcevandziev; Leonel Pereira
Source:
Carbohydrate polymer technologies and applications 2021 v.2 pp. 100097
ISSN:
2666-8939
Subject:
Brassica oleracea; Calliblepharis; Chondracanthus; Gracilaria; Grateloupia turuturu; Sargassum muticum; Undaria pinnatifida; agar; alginates; bioactive properties; chemical structure; females; gametophytes; human health; iota-carrageenan; kale; macroalgae; plant growth; polymers; weeds
Abstract:
... Currently, the high food demand led to a mass agriculture practices, whereas crop productivity is one of the major concerns for the producers. However, the intensification of the use of synthetic fertilizers has led to serious harmful impacts for human health and for the environment. The quest for novel and natural agricultural products is a current trend, hence seaweed polysaccharide bioactivity ...
DOI:
10.1016/j.carpta.2021.100097

5. 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

6. 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

7. 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

8. Sargassum muticum extract based on alginate biopolymer as a new efficient biological corrosion inhibitor for carbon steel in hydrochloric acid pickling environment: Gravimetric, electrochemical and surface studies

Author:
I. Nadi; Z. Belattmania; B. Sabour; A. Reani; A. Sahibed-dine; C. Jama; F. Bentiss
Source:
International journal of biological macromolecules 2019 v.141 pp. 137-149
ISSN:
0141-8130
Subject:
Sargassum muticum; X-ray photoelectron spectroscopy; adsorption; algae; alginates; biopolymers; capacitance; carbon; coasts; corrosion; electrochemistry; electrolytes; plant extracts; sorption isotherms; steel; Morocco
Abstract:
... The inhibition effect of the invasive brown seaweed Sargassum muticum extract (ESM), harvested from the Atlantic coast of Morocco, against the corrosion of carbon steel (CS) in 1 M HCl medium was studied for the first time using gravimetric, electrochemical and surface techniques. The methanolic crude extract of Sargassum muticum (ESM) is rich in alginate biopolymer. The evaluation corrosion tests ...
DOI:
10.1016/j.ijbiomac.2019.08.253

9. The inhibition of anaerobic digestion by model phenolic compounds representative of those from Sargassum muticum

Author:
John J. Milledge; Birthe V. Nielsen; Patricia J. Harvey
Source:
Journal of applied phycology 2019 v.31 no.1 pp. 779-786
ISSN:
0921-8971
Subject:
Sargassum muticum; alginates; anaerobic digestion; biogas; cellulose; epicatechin; gallic acid; glycerol; hydrocolloids; hydrolysis; macroalgae; methane; methane production; models; organic matter; polymers; polyphenols; sodium
Abstract:
... Practical yields of biogas from the anaerobic digestion of macroalgae and, Sargassum muticum in particular, are substantially below the theoretical maximum. There is considerable conjecture about the reasons for the relatively low practical methane yields from seaweed, and polyphenols are suggested as one of the elements in the low yield of methane from brown seaweeds. However, there appears to be ...
DOI:
10.1007/s10811-018-1512-4

10. A green approach for alginate extraction from Sargassum muticum brown seaweed using ultrasound-assisted technique

Author:
N. Flórez-Fernández; H. Domínguez; M.D. Torres
Source:
International journal of biological macromolecules 2019 v.124 pp. 451-459
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; Sargassum muticum; alginates; cell growth; fucoidan; growth retardation; hydrogels; matrix-assisted laser desorption-ionization mass spectrometry; molecular weight; nuclear magnetic resonance spectroscopy; rheology; sodium; sonication; temperature; ultrasonic treatment
Abstract:
... Ultrasound assisted aqueous extraction of alginate from Sargassum muticum was proposed to minimize the use of chemicals, high temperatures and prolonged times, with comparable extraction yields to conventional acid/alkali procedures. The alginate, precipitated from the liquors obtained after ultrasound assisted extraction of fucoidan and phlorotannin fractions, and converted to alginic acid sodium ...
DOI:
10.1016/j.ijbiomac.2018.11.232

11. Extraction of alginate from Sargassum muticum: process optimization and study of its functional activities

Author:
Anupriya Mazumder; Susan Løvstad Holdt; Davide De Francisci; Merlin Alvarado-Morales; H. N. Mishra; Irini Angelidaki
Source:
Journal of applied phycology 2016 v.28 no.6 pp. 3625-3634
ISSN:
0921-8971
Subject:
Sargassum muticum; alginates; antioxidant activity; equations; ethanol; factor analysis; fluorescence; nuclear magnetic resonance spectroscopy; polyphenols; regression analysis; solvents; spectrophotometers; temperature; wastes
Abstract:
... In the present study, alginate extraction from the brown seaweed Sargassum muticum was studied using single factor analysis. Response Surface Methodology-Central Composite Rotatary design (RSM-CCRD) was performed to reduce and optimize extraction temperature, alkali concentration, and consumption of solvent. Different interaction effect of three extraction factors of temperature (60–100 °C), alkal ...
DOI:
10.1007/s10811-016-0872-x

12. Feasibility of posthydrolysis processing of hydrothermal extracts from Sargassum muticum

Author:
Noelia Flórez-Fernández; María Jesús González-Muñoz; Herminia Domínguez
Source:
Algal research 2017 v.27 pp. 73-81
ISSN:
2211-9264
Subject:
Sargassum muticum; algae; alginates; chemical precipitation; colorectal neoplasms; cytotoxicity; depolymerization; fucoidan; hot water treatment; neoplasm cells; sulfates; ultrasonics
Abstract:
... The posthydrolysis of the crude fucoidan extracted during hydrothermal treatment of Sargassum muticum was carried out with mineral acid or without added acid and aided by microwave or by ultrasound processing during short periods. The liquors produced under non-isothermal treatments at 150 and 170°C were subjected to alginate precipitation and the soluble crude fucoidan to posthydrolysis. Acid pos ...
DOI:
10.1016/j.algal.2017.08.002

13. Chemical composition of red, brown and green macroalgae from Buarcos bay in Central West Coast of Portugal

Author:
Dina Rodrigues; Ana C. Freitas; Leonel Pereira; Teresa A.P. Rocha-Santos; Marta W. Vasconcelos; Mariana Roriz; Luís M. Rodríguez-Alcalá; Ana M.P. Gomes; Armando C. Duarte
Source:
Food chemistry 2015 v.183 pp. 197-207
ISSN:
0308-8146
Subject:
Codium; Fourier transform infrared spectroscopy; Gracilaria; Grateloupia turuturu; Sargassum muticum; agar; alginates; calcium; carrageenan; chemical structure; coasts; edible seaweed; fatty acid composition; fatty acids; iron; macroalgae; magnesium; nutritive value; potassium; protein content; sugars; Portugal
Abstract:
... Six representative edible seaweeds from the Central West Portuguese Coast, including the less studied Osmundea pinnatifida, were harvested from Buarcos bay, Portugal and their chemical characterization determined. Protein content, total sugar and fat contents ranged between 14.4% and 23.8%, 32.4% and 49.3% and 0.6–3.6%. Highest total phenolic content was observed in Codium tomentosum followed by S ...
DOI:
10.1016/j.foodchem.2015.03.057

14. Brown seaweed species from Strangford Lough: compositional analyses of seaweed species and biostimulant formulations by rapid instrumental methods

Author:
Sharma H. S. Shekhar; G. Lyons; C. McRoberts; D. McCall; E. Carmichael; F. Andrews; R. McCormack
Source:
Journal of applied phycology 2012 v.24 no.5 pp. 1141-1157
ISSN:
0921-8971
Subject:
Ascophyllum nodosum; Fourier transform infrared spectroscopy; Fucus serratus; Fucus vesiculosus; Laminaria; Sargassum muticum; X-radiation; alginates; cell walls; electrical conductivity; fatty acids; gas chromatography; macroalgae; mannitol; mass spectrometry; nitrogen content; rapid methods; thermogravimetry
Abstract:
... The aims of this study were to characterise the composition of five seaweed species (Ascophyllum nodosum, Fucus serratus, Fucus vesiculosus, Laminaria hyperborea and Sargassum muticum), their extracts and commercial formulations, using thermogravimetry (TGA), energy dispersive X-ray microanalysis (EDX), Fourier-transform infrared spectroscopy (FTIR) and pyrolysis gas chromatography/mass spectromet ...
DOI:
10.1007/s10811-011-9744-6

15. French Brittany macroalgae screening: Composition and methane potential for potential alternative sources of energy and products

Author:
G. Jard; H. Marfaing; H. Carrère; J.P. Delgenes; J.P. Steyer; C. Dumas
Source:
Bioresource technology 2013 v.144 pp. 492-498
ISSN:
0960-8524
Subject:
Palmaria; Saccharina; Sargassum muticum; alginates; anaerobic digestion; chemical composition; coasts; colloids; energy; energy industry; food additives; foods; lipids; macroalgae; methane; nutrients; polyphenols; proteins; renewable energy sources; screening; France
Abstract:
... Macroalgae are biomass resources that represent a valuable feedstock to be used entirely for human consumption or for food additives after some extractions (mainly colloids) and/or for energy production. In order to better develop the algal sector, it is important to determine the capacity of macroalgae to produce these added-values molecules for food and/or for energy industries on the basis of t ...
DOI:
10.1016/j.biortech.2013.06.114