期刊
MOLECULES
卷 25, 期 18, 页码 -出版社
MDPI
DOI: 10.3390/molecules25184335
关键词
brown seaweeds; alginates; spectroscopic characterization; Morocco
资金
- project H2020 RISE project EMERTOX-Emergent Marine Toxins in the North Atlantic and Mediterranean: New Approaches to Assess their Occurrence and Future Scenarios in the Framework of Global Environmental Changes [778069]
- FCT [UIDB/04423/2020, UIDP/04423/2020]
- FCT-Portugal/CNRST-Morocco Cooperation Convention [1006/13/CNR, 1795/14/CNR, 0504/19/CNR]
Alginates are widely used as gelling agents in textile print pastes, medical industries, impression material in dentistry, and anticoagulant material in toothpaste. In the present study, the content and spectroscopic characterization (H-1 NMR and FT-IR) of the sodium alginates were investigated in the eight brown seaweedsSargassum muticum,Fucus vesiculosusf.volubilis,Carpodesmia tamariscifolia,Bifurcaria bifurcata,Laminaria ochroleuca,Cystoseira humilis,Saccorhiza polyschides, andFucus guiryiharvested from the NW Atlantic coast of Morocco. The results proved that the most studied algae depicted alginate yields higher than 18% dry weight. The FT-IR analysis showed that the spectra of the extracted alginates exhibited significant similarities to the commercial alginate from Sigma-Aldrich. The(1)H NMR spectroscopy indicated that the extracted alginates have a high content of beta-d-mannuronic (M) than alpha-l-guluronic acid (G) with M/G ratio values ranging from 1.04 to 4.41. The homopolymeric fractions F(MM)are remarkably high compared to the F(GG)and heteropolymeric fractions (F-GM= F-MG) especially forF. guiryi,C humilis,C. tamariscifolia,L. ochroleuca, andS. polyschides. Nevertheless, the heteropolymeric fractions (F-GM/F-MG) are quite abundant in the alginates ofS. muticum,F. vesiculosusf.volubilis, andB. bifurcataaccounting for more than 52% of the polymer diads. Based on these results, the investigated algal species (exceptFucus guiryiandBifurcaria bifurcata) could be regarded as potential sources of alginates for industrial uses.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据