Title :

The Invasive Seaweed Agarophyton vermiculophyllum from Oualidia Lagoon (Northwestern Moroccan Atlantic Coast) as a Source of Agar: Yield, Chemical Characteristics, and Rheological Properties

Author(s) :

Nadri, Amal [Auteur]
Université Chouaib Doukkali [UCD]
Belattmania, Zahira [Auteur]
Université Chouaib Doukkali [UCD]
Chaouti, Abdellatif [Auteur]
Université Chouaib Doukkali [UCD]
Bentiss, Fouad [Auteur]
Université Chouaib Doukkali [UCD]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Hmimid, Fouzia [Auteur]
Université Chouaib Doukkali [UCD]
Reani, Abdeltif [Auteur]
Université Chouaib Doukkali [UCD]
Sabour, Brahim [Auteur]
Université Chouaib Doukkali [UCD]

Journal title :

Journal of Marine Science and Engineering

Abbreviated title :

J. Mar. Sci. Eng.

Volume number :

11

Pages :

1696

Publisher :

MDPI

Publication date :

2023-08-28

ISSN :

2077-1312

English keyword(s) :

agar properties
alkaline pretreatment
13C NMR
extraction
FTIR
invasive seaweed
North African lagoon

HAL domain(s) :

Chimie/Matériaux

English abstract : [en]

Agar is a hydrophilic biopolymer extracted from red seaweed. This phycocolloid consists of two components: agarose and agaropectin. In the present work, agar extracted from the invasive red seaweed Agarophyton vermiculophyllum ...
Show more >Agar is a hydrophilic biopolymer extracted from red seaweed. This phycocolloid consists of two components: agarose and agaropectin. In the present work, agar extracted from the invasive red seaweed Agarophyton vermiculophyllum was characterized using physical, chemical, and spectroscopic analyses to investigate the effect of alkaline pretreatment on agar properties. Two extraction conditions, native and alkali-pretreated agars, were comparatively studied. The native yield (28.4 ± 0.9%) was higher than that of the alkaline-pretreated agar (20.4 ± 0.8%). The alkali-pretreated agar showed higher gel strength (763.8 ± 57.0g cm−2), gelling (36.5 ± 0.9 °C), and melting (83.2 ± 0.6 °C) temperatures and increased 3,6-anhydrogalactose (26.2 ± 1.9%) and decreased sulfate contents (6.2 ± 0.8%) compared with native agar (gel strength: 204.8 ± 17.10g cm−2, gelling temperature: 29.5 ± 0.9 °C, melting temperature: 73.4 ± 0.7 °C, 3,6-AG content: 13.8 ± 0.7%, sulfate content: 10.5 ± 0.5%). The alkaline pretreatment improved the agar’s gelling properties and significantly influenced its chemical properties. In view of the obtained results, A. vermiculophyllum might potentially be thought of as a viable source for the agar industry in Morocco, serving as a local source of agar.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Procédés de Recyclage et de Fonctionnalisation (PReF)

Submission date :

2023-09-01T11:22:35Z
2023-09-05T08:11:29Z