Un nouvel alginate de sodium issu d’une algue brune marine : production, caractérisation et activités biologiques (notice n° 1543991)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02946cam a2200301 4500500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20251012024442.0 |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | fre |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 100 10 - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Hentati, Faiez |
| Relator term | author |
| 245 00 - TITLE STATEMENT | |
| Title | Un nouvel alginate de sodium issu d’une algue brune marine : production, caractérisation et activités biologiques |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Date of publication, distribution, etc. | 2025.<br/> |
| 500 ## - GENERAL NOTE | |
| General note | 99 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | In the context of marine biodiversity valorization, this study presents the extraction, characterization, and biological activities of sodium alginate from the Tunisian brown seaweed Cystoseira compressa (CCSA). The extracted alginate (yield: 21.65%) features a structure rich in homopolymeric blocks (GG: 53%, MM:40%, M/G <1), providing strong gel-forming properties. Structural and rheological analyses revealed pseudoplastic behavior, temperature-sensitive viscosity, and thixotropic characteristics. CCSA forms a rigid gel at 4.94 mM CaCl₂ in a 2% solution. Biologically, CCSA showed moderate antioxidant activity (IC₅₀ ≈ 560 µg/mL) and significant antinociceptive effects comparable to high-dose paracetamol. These results open promising perspectives for food, pharmaceutical, and biomedical applications, notably through the formulation of complexes with other natural biopolymers. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Dans le cadre de la valorisation de la biodiversité marine, cette étude présente l’extraction, la caractérisation et les activités biologiques de l’alginate de sodium issu de l’algue brune tunisienne Cystoseira compressa (CCSA). L’alginate obtenu (rendement : 21,65 %) présente une structure riche en blocs homopolymériques (GG : 53 %, MM : 40 %, M/G < 1), conférant des propriétés gélifiantes élevées. Les analyses structurales et rhéologiques révèlent un comportement pseudoplastique, une viscosité sensible à la température et un caractère thixotrope. CCSA forme un gel rigide à 4,94 mM de CaCl₂ pour une solution à 2 %. Sur le plan biologique, CCSA présente une activité antioxydante modérée (IC₅₀ ≈ 560 µg/mL) et une activité antinociceptive significative, comparable à celle du paracétamol à forte dose. Ces résultats ouvrent des perspectives pour des applications alimentaires, pharmaceutiques ou biomédicales, notamment via la formulation de complexes avec d’autres biopolymères naturels. |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Activités biologiques |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Alginate de sodium |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Algues marines brunes |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Caractérisation structurale |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Propriétés rhéologiques |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Biological Activities |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Brown Marine Seaweed |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Rheological Properties |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Sodium Alginate |
| 690 ## - LOCAL SUBJECT ADDED ENTRY--TOPICAL TERM (OCLC, RLIN) | |
| Topical term or geographic name as entry element | Structural Characterization |
| 700 10 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Karoui, Romdhane |
| Relator term | author |
| 786 0# - DATA SOURCE ENTRY | |
| Note | Innovations | hors-série | HS1 | 2025-10-10 | p. 76-76 | 1267-4982 |
| 856 41 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://shs.cairn.info/revue-innovations-2025-HS1-page-76?lang=fr&redirect-ssocas=7080">https://shs.cairn.info/revue-innovations-2025-HS1-page-76?lang=fr&redirect-ssocas=7080</a> |
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