Extraction and characterization of an alginate from the Iranian brown seaweed Nizimuddinia zanardini

Autor: Jacques Desbrières, Alina-Violeta Ursu, Roya Abka Khajouei, Cédric Delattre, Gholamreza Djelveh, Philippe Michaud, Christine Gardarin, Nasser Hamdami, Céline Laroche, Didier Lecerf, Javad Keramat
Přispěvatelé: Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Hautes Energies (LPTHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2018
Předmět:
DPPH
Alginates
Chemical structure
Intrinsic viscosity
02 engineering and technology
Iran
010402 general chemistry
Polysaccharide
Phaeophyta
01 natural sciences
Biochemistry
Hydrolysis
chemistry.chemical_compound
Glucuronic Acid
Antioxidant activity
Structural Biology
[CHIM.ANAL]Chemical Sciences/Analytical chemistry
Molecular Biology
chemistry.chemical_classification
Chromatography
Nizimuddinia zanardini
biology
Chemistry
Hexuronic Acids
Extraction (chemistry)
Alginate
Food preservation
General Medicine
Free Radical Scavengers
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
biology.organism_classification
Seaweed
6. Clean water
0104 chemical sciences
Brown algae
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry
[CHIM.POLY]Chemical Sciences/Polymers
0210 nano-technology
Zdroj: International Journal of Biological Macromolecules
International Journal of Biological Macromolecules, Elsevier, 2018, 118 (1073-1081), ⟨10.1016/j.ijbiomac.2018.06.154⟩
International Journal of Biological Macromolecules, 2018, 118 (1073-1081), ⟨10.1016/j.ijbiomac.2018.06.154⟩
ISSN: 0141-8130
DOI: 10.1016/j.ijbiomac.2018.06.154⟩
Popis: International audience; Sodium alginate from Nizimuddinia zanardini (an Iranian brown algae) was extracted with acid and alkaline solutions, partially and totally hydrolyzed and analyzed for its biochemical composition. 1H NMR spectroscopy, SEC-MALLS, HPAEC and FT-IR were performed to determine its structure and its physico-chemical properties. This alginate has a M/G ratio of 1.1, a molecular weight of 103 kDa, a polydispersity index of 1.22, and an intrinsic viscosity of 342 mL/g. Its antioxidant activity was tested by DPPH radical scavenging showing its potential for food preservation. Rheological properties of solutions of this alginate with concentrations between 1 and 5% (w/v) in water and 0.5 M NaCl were investigated indicating a Newtonian fluid type behaviour in water and a shear thinning fluid type behaviour in NaCl solutions.
Databáze: OpenAIRE
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