Structural characterization of natural ideal 6-O-sulfated agarose from red alga Gloiopeltis furcata

Hu, Yan-Nan; Yu, Guangli; Zhao, Xiaoliang; Wang, Yufeng; Sun, Xizhe; Jiao, Guangling; Zhao, Xia; Chai, Wengang

doi:10.1016/j.carbpol.2012.04.026

Cited by 26 publications

(16 citation statements)

References 31 publications

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“…Similar to the MS of κ-carra-oligosaccharides, the detailed sequences of highly charged odd-numbered 6- O -sulfated-agaro-oligosaccharides were also identified [33]. The spectrum of 6- O -sulfated-agaro-pentasaccharide ([M − Na] − as the precursor) was characterized by extensive B and C ions, together with some prominent Y ions (Figure 4b).…”

Section: Ms For Characterizing Galactan Oligosaccharides From Red mentioning

confidence: 78%

“…They are different in the sulfation patterns and in the replacement of the D units by 3,6-anhydro-α- d / l -galactopyranose form (A), and so, their fragmentation patterns are also different in ESI tandem MS. Gonçalves found that there were diagnostic differences among the fragmentations of positional isomers of sulfated oligosaccharides derived from carrageenans and agarans [30]. Sequence determination of galactan oligosaccharides with homogeneous disaccharide compositions and heterogeneous compositions were successfully carried out by negative mode ESI-MS together with CID MS/MS [31,32,33]. …”

Section: Ms For Characterizing Galactan Oligosaccharides From Red mentioning

confidence: 99%

“…( a ) Agaro-pentasaccharide (modified from [32]); ( b ) 6- O -sulfated-agaro-pentasaccharide (modified from [33]).…”

Section: Ms For Characterizing Galactan Oligosaccharides From Red mentioning

confidence: 99%

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Applications of Mass Spectrometry to Structural Analysis of Marine Oligosaccharides

et al. 2014

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Marine oligosaccharides have attracted increasing attention recently in developing potential drugs and biomaterials for their particular physical and chemical properties. However, the composition and sequence analysis of marine oligosaccharides are very challenging for their structural complexity and heterogeneity. Mass spectrometry (MS) has become an important technique for carbohydrate analysis by providing more detailed structural information, including molecular mass, sugar constituent, sequence, inter-residue linkage position and substitution pattern. This paper provides an overview of the structural analysis based on MS approaches in marine oligosaccharides, which are derived from some biologically important marine polysaccharides, including agaran, carrageenan, alginate, sulfated fucan, chitosan, glycosaminoglycan (GAG) and GAG-like polysaccharides. Applications of electrospray ionization mass spectrometry (ESI-MS) are mainly presented and the general applications of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) are also outlined. Some technical challenges in the structural analysis of marine oligosaccharides by MS have also been pointed out.

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Section: Ms For Characterizing Galactan Oligosaccharides From Red mentioning

confidence: 78%

Section: Ms For Characterizing Galactan Oligosaccharides From Red mentioning

confidence: 99%

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Applications of Mass Spectrometry to Structural Analysis of Marine Oligosaccharides

et al. 2014

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“…In addition, G6S-LA was the only structure in a fraction from the cold water extract from Gloiopeltis furcata (Endocladiaceae, Gigartinales) obtained in 20% yield regarding the dry seaweed (Hu et al, 2012), and it was also found in major amounts in this and other Gloipeltis species (G. complanata and G. tenax), with minor amounts of G6M-LA, G6S-LA2M, G6S-L6S, and G-LA. These agarans are usually called funorans (Tuvikene et al, 2015a).…”

Section: D) G6s Group Comprises the Agarans In Which The A-unit Is Sumentioning

confidence: 89%

Structural Diversity in Galactans From Red Seaweeds and Its Influence on Rheological Properties

2020

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“…Enzymatic pretreatments are also employed since they reduce extraction time, diminish energy consumption, minimizes the usage of solvents, increase the yield, and mainly preserve biological activities [3]. Generally, polysaccharides are submitted to NMR spectroscopy after pretreatments aiming structural analysis [14,21] (Fig. 2).…”

Section: Structural Modifications Of Sulfated Polysaccharidementioning

confidence: 99%

“Algae’s sulfated polysaccharides modifications: Potential use of microbial enzymes”

Gurpilhares

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Bueno

et al. 2016

Process Biochemistry

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Marine algae are valuable sources of structurally diverse bioactive compounds, among them, the group of sulfated polysaccharides (SPs). As an example of SPs, it could be cited the fucoidans in brown algae, carrageenans in red algae and ulvans in green algae. Since the past decades, SPs have been extracted from algae and evaluated in respect to their beneficial biological activities such as anti-inflammatory, antioxidative, antimicrobial, anticoagulant, antithrombotic, immunological and anticancer. This review deals with the presentation of natively bioactive SPs structural features in addition to already employed approaches of SPs structure modifications, such as chemical and physical methods. Moreover, this article presents the advantages and the importance of using enzymatic methods during SPs modification, and particularly, the use of microorganisms as enzymes sources. Enzymes such as hydrolases/glycosidases (e.g. fucoidanase, fucosidase, agarase and carrageenase), lyases, sulfotransferases and sulfatases could be used for this purpose. It has been shown that more studies are necessary to obtain/identify opportunities to create novel, or to intensify, SPs biological properties. Considering the advantages in the use of microbial enzymes in biotransformation processes, studies related to the modification of SPs by microorganisms should be stimulated.

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Structural characterization of natural ideal 6-O-sulfated agarose from red alga Gloiopeltis furcata

Cited by 26 publications

References 31 publications

Applications of Mass Spectrometry to Structural Analysis of Marine Oligosaccharides

Applications of Mass Spectrometry to Structural Analysis of Marine Oligosaccharides

Structural Diversity in Galactans From Red Seaweeds and Its Influence on Rheological Properties

“Algae’s sulfated polysaccharides modifications: Potential use of microbial enzymes”

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