Catalytic transformation of the marine polysaccharide ulvan into rare sugars, tartaric and succinic acids

Podolean, Iunia; Coman, Simona M.; Bucur, Cristina; Teodorescu, Cristian M.; Kikionis, Stefanos; Iοannou, Efstathia; Roussis, Vassilios; Primo, Ana; Garcı́a, Hermenegildo; Pârvulescu, Vasile I.

doi:10.1016/j.cattod.2020.06.086

Cited by 22 publications

(11 citation statements)

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“…Ulvan's chemical structure is made up of two disaccharide units, type A 3s glucuronorhamnose and type B 3s iduronorhamnose, which are organized in a regular sequence inside the heteropolymer chain, as shown in Scheme 24. 114 For esterification of fatty acid and trimethylolpropane, Su et al 115 utilized a SnO@GO catalyst. It can facilitate the stoichiometric esterification of trimethylolpropane and fatty acids (C6−C10).…”

Section: Application Of Graphene Oxide As the Catalysis For Different...mentioning

confidence: 99%

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An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

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Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalized. Brodie synthesized the GO in 1859 by reacting graphite with KClO 3 in the presence of fuming HNO 3 ; the reaction took 3−4 days to complete at 333 K. Since then, various schemes have been developed to reduce the reaction time, increase the yield, and minimize the release of toxic byproducts (NO 2 and N 2 O 4 ). The modified Hummers method has been widely accepted to produce GO in bulk. Due to its versatile characteristics, GO has a wide range of applications in different fields like tissue engineering, photocatalysis, catalysis, and biomedical applications. Its porous structure is considered appropriate for tissue and organ regeneration. Various branches of tissue engineering are being extensively explored, such as bone, neural, dentistry, cartilage, and skin tissue engineering. The band gap of GO can be easily tuned, and therefore it has a wide range of photocatalytic applications as well: the degradation of organic contaminants, hydrogen generation, and CO 2 reduction, etc. GO could be a potential nanocarrier in drug delivery systems, gene delivery, biological sensing, and antibacterial nanocomposites due to its large surface area and high density, as it is highly functionalized with oxygen-containing functional groups. GO or its composites are found to be toxic to various biological species and as also discussed in this review. It has been observed that superoxide dismutase (SOD) and reactive oxygen species (ROS) levels gradually increase over a period after GO is introduced in the biological systems. Hence, GO at specific concentrations is toxic for various species like earthworms, Chironomus riparius, Zebrafish, etc.

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Section: Application Of Graphene Oxide As the Catalysis For Different...mentioning

confidence: 99%

“…Ulvan’s chemical structure is made up of two disaccharide units, type A 3s glucuronorhamnose and type B 3s iduronorhamnose, which are organized in a regular sequence inside the heteropolymer chain, as shown in Scheme 24 . 123 …”

Section: Application Of Graphene Oxide As the Catalysis For Different...mentioning

confidence: 99%

An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

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“…Characterization of ulvan (MW distribution centered at approx. 1200 kDa; 48.1% sulfate, 40.3% carbohydrates; among carbohydrates rhamnose and uronic acids represented 25.2% and 18.1%, respectively) was performed as previously described [ 74 ].…”

Section: Methodsmentioning

confidence: 99%

The Marine Polysaccharide Ulvan Confers Potent Osteoinductive Capacity to PCL-Based Scaffolds for Bone Tissue Engineering Applications

Kikionis

Iοannou

Aggelidou

et al. 2021

IJMS

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Hybrid composites of synthetic and natural polymers represent materials of choice for bone tissue engineering. Ulvan, a biologically active marine sulfated polysaccharide, is attracting great interest in the development of novel biomedical scaffolds due to recent reports on its osteoinductive properties. Herein, a series of hybrid polycaprolactone scaffolds containing ulvan either alone or in blends with κ-carrageenan and chondroitin sulfate was prepared and characterized. The impact of the preparation methodology and the polysaccharide composition on their morphology, as well as on their mechanical, thermal, water uptake and porosity properties was determined, while their osteoinductive potential was investigated through the evaluation of cell adhesion, viability, and osteogenic differentiation of seeded human adipose-derived mesenchymal stem cells. The results verified the osteoinductive ability of ulvan, showing that its incorporation into the polycaprolactone matrix efficiently promoted cell attachment and viability, thus confirming its potential in the development of biomedical scaffolds for bone tissue regeneration applications.

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“…11C), resulting in the reduced formation of humins, which are the by-products of the dehydration of monosaccharides, and negatively affect the function of oligosaccharides. [65][66][67][68][69]…”

Section: Study Of the Acidic Oxidative Hydrolysis Process Of Xgmentioning

confidence: 99%