
Polysaccharides
Found 505 products of "Polysaccharides"
Alginic acid
CAS:A linear polyuronide obtained from the brown seaweeds (e.g. Laminaria hyperborea, Fucus vesiculosus, Ascophyllum nodosum). In the free acid form, the chemical structure consists of protonated blocks of (1,4) linked-β-D-polymannuronic acid (poly M), (1,4) linked-α-L-polyguluronic acid (poly G) and alternating blocks of the two uronic acids (poly MG).Color and Shape:PowderCorn starch
CAS:Starch is a two component polysaccharide mixture of amylose and amylopectin. Amylose is a linear polysaccharide of α (1,4)-linked glucose residues and averages 20 to 30% of the total in most native starches. Amylopectin is a highly branced glucan containing both a (1,4) and a (1,6) linkages. The number of glucose residues in a single starch molecule can vary from five hundred to several hundred thousand, depending on the type of starch. Starch is the major storage form of energy in plants, just as glycogen is the storage form of energy for animals. The plant directs the starch molecules to the amyloplasts, where they are deposited to form granules. Thus, both in plants and in the extracted concentrate, starch exists as granules varying in diameter from 2 to 130 μm.Purity:Min. 95%Color and Shape:PowderHyaluronic acid from Bacteria
CAS:Hyaluronic acid is a polysaccharide composed of repeating units of the disaccharide N-acetylglucosamine and D-glucuronic acid. It is found in many connective tissues, including the skin, where it binds water and maintains elasticity. This product is custom synthesized by modifying the structure to include fluorine atoms, methyl groups, and monosaccharides. It is synthesized from synthetic building blocks that are modified with click chemistry to form oligosaccharides. The saccharide units are then glycosylated with sugar molecules, creating a complex carbohydrate with an average molecular weight between 50,000 and 100,000 Daltons.
Purity:(%) Min. 90%Fucoidan, ecklonia
CAS:A fucan sulphate found in brown marine algae (Phaeophyta-typically Fucus vesiculotus, Ecklonia (illustrated), Alaria and Cladosiphon) and has been shown to have anticoagulant activity. The main constituents are α-1,4 and α-1,2 linked L-fucose sulphates although galactose also occurs and there are many variations of the basic structure found in different species of Phaeophyta. The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.Purity:Min. 95%Color and Shape:White PowderFurcellaran
CAS:Furcellaran (Danish agar) is similar to κ-carrageenan but is less sulphated (50%). It has been extracted from Furcellaria lumbricalis, which is mainly harvested off the coast of Denmark. This species, which is common to most parts of Europe, occurs as a loose form and only reproduces vegetatively. The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.Color and Shape:Powder(Hydroxypropyl)methyl cellulose - Viscocity 40-60 cP, 2 % in H2O (20 °C)
CAS:Hydroxypropyl methylcellulose (HPMC or hypromellose) is a semisynthetic, inert and viscoelastic polymer that is used as eye drops and as semi-synthetic substitute for tear-films. When applied, a hypromellose solution acts to swell and absorb water, by increasing the thickness of the tear-film, resulting in decreased eye irritation. In addition to its use in ophthalmic liquids, hypromellose has been used as an excipient in oral tablet and capsule formulations, where, depending on the grade, it functions as controlled-release agent. It is also used as a binder and as a component of tablet coatings. Hypromellose in aqueous solution, unlike methylcellulose, exhibits thermal gelation properties. HPMC is approved as a food additive, emulsifier, thickening and suspending agent, and as an alternative to animal gelatin (Codex Alimentarius code (E number) is E464).Color and Shape:White Off-White PowderArthrobacter viscosus exopolysaccharide
The polysaccharide has a linear structure and consists predominantly of repeating trisaccharide units, -O-(3-D-mannuronic acid-(1,4)-O-(3-D-glucopyranosyl-(1,4)-D-galactose. 50% of the hydroxyl groups are acetylated. Extracted from a gram negative non pathogenic bacteria and then synthetic manipulation.Purity:Min. 95%Color and Shape:PowderHeparin sodium salt
CAS:Heparin is a glycosaminoglycan which occurs in many mammalian tissues and has important anticoagulant and thrombolytic properties. The chemical structure is composed mainly of two disaccharide repeating units A and B. A is L-iduronic acid 2-suplhate linked α-(1,4) to 2-deoxy-2-sulfamido-D-galactose 6-sulphate while B is D-glucuronic acid β-(1,4) linked to 2-deoxy-2-sulfamido-D-glucose 6-sulphate.Color and Shape:White PowderGhatti gum
CAS:Gum ghatti is an exudate gum from the tree Anogeissus latifolia found in India and Sri Lanka. Applications are similar to Gum arabic in the food and pharmaceutical industries, where it is used as an emulsifier. The polysaccharide is reported to have an extremely complex structure which contains both oligosaccharides and polysaccharide elements. The polysaccharide contains Ara, Gal, Man, GlcA and Rha in a molar ratio of 61:39:6:10:6, a backbone of (1,6)-linked β-D-galactopyranosyl units and side chains of L-arabinofuranose units with some (1,4)-D-glucopyranosyluronic acid units, some joining (1,2)-D-mannopyranosyl units.Color and Shape:Off-White PowderHydroxypropyl cellulose - Average MW 370,000
CAS:In water, hydroxypropyl cellulose forms liquid crystals with many mesophases depending on concentration. These mesophases include isotropic, anisotropic, nematic and cholesteric, the latter resulting in many colors such as violet, green and red. Pharmaceutical applications include treatments for medical conditions such as dry eye syndrome (keratoconjunctivitis sicca), recurrent corneal erosions, decreased corneal sensitivity, exposure and neuroparalytic keratitis. It is also used as a binder in tablets. Hydroxypropylcellulose is also used as a thickener, a binder and emulsion stabiliser in foods with E number E463. HPC is used as a support matrix for DNA separations by capillary and microchip electrophoresis.Purity:Min. 95%Color and Shape:PowderCurdlan
CAS:Curdlan is a microbial polysaccharide produced by a mutant strain of Alcaligenes faecalis var. myxogenes which was first shown to produce succinoglucan prior to mutation. Curdlan is a β-1,3 glucan forming clear solutions at about 55 °C which then gels (“low-set”) when cooled. Suspensions of curdlan at higher temperatures form firm resilient gels (“high set”) that melt at 140 - 160 °C.
The image was kindly provided by Dr. Chris Lawson.Purity:Min. 95%Color and Shape:White PowderKephir gum
CAS:‘Water kefir’ is a home-made beverage, which was thought to contain significant amounts of bacterial exopolysaccharides. It has now been reported that the exopolysaccharide fraction of this material contains dextrans with similar structures, having a number of (1,3) linkages, branched at positions O3 and position O2 and with a wide range of molecular weights. In addition, it was shown that a small amount of levan is also present.Purity:Min. 95%Color and Shape:PowderPectic acid
CAS:Pectic acid is non water-soluble β (1,4)-linked polygalacturonic acid. In its gel form, is water-soluble, transparent and gelatinous, and exists in ripe fruit and some vegetables. It is a product of pectin degradation in plants, and is produced via the interaction between pectinase and pectin (the latter being common in the wine-making industry).Purity:Min. 95%Color and Shape:PowderDextran sulfate sodium, MW 20,000
CAS:Sodium carboxymethyl dextran (CM-dextran) is a white, odourless and tasteless powder, which is freely soluble in water or electrolyte solutions. The product has a pronounced polyanionic character, due to the high degree of carboxyl substitution. Applications that have been described for CM-dextran include carriers of paramagnetic contrast agents, preparation of conjugates of pharmacologically active compounds and CM-dextrans in biosensors. A number of other uses in cosmetics, agriculture, foods, paints and textiles have been the subject of patent applications.Color and Shape:PowderArabinan
CAS:Sugar beet arabinan consists of a 1,5 α-linked arabinose backbone to which 1,3 α-linked (and possibly some 1,2 α-linked) L-arabinofuranosyl residues are attached. Approximately 60% of the main-chain arabinofuranosyl residues are substituted by single 1,3-linked arabinofuranosyl groups. The reducing terminal arabinosyl residue is attached through rhamnose to fragments of the rhamnogalacturonan backbone of the native pectin molecule.
Color and Shape:White PowderFucoidan, fucus vesiculosus
CAS:A fucan sulphate found in brown marine algae (Phaeophyta-typically fucus vesiculosus (illustrated), Ascophyllum nodosum, Alaria and Macrocystis pyrifyra and has been shown to have anticoagulant activity. The main constituents are α-1,4 and α-1,2 linked L-fucose sulphates although galactose also occurs and there are many variations of the basic structure found in different species of Phaeophyta. The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.Purity:Min. 95%Color and Shape:White PowderDe-N-sulfated heparin sodium
CAS:Porcine mucosal heparin derivative; no anti-coagulant activityColor and Shape:PowderCarboxymethyl-dextran sodium salt - Average MW 10,000 - 20,000Da
CAS:Sodium carboxymethyl dextran is a white, odourless and tasteless powder, which is freely soluble in water or electrolyte solutions. Applications that have been described for carboxymethyl dextran include carriers of paramagnetic contrast agents, preparation of conjugates of pharmacologically active compounds and carboxymethyl dextrans in biosensors. A number of other uses in cosmetics, agriculture, foods, paints and textiles have been the subject of patent applications.Color and Shape:White PowderMaltodextrin oligosaccharides - DP10 to DP40
Produced from starch; white hygroscopic spray-dried powder; easily digestibleColor and Shape:PowderMannan (ex Ivory nut)
CAS:Ivory nut mannan occurs in members of the custard apple, ebony and palm families - Ivory nut. The polysaccharide contains more than 95% mannose units linked β-(1,4) with a few a-D-galactopyranosyl units linked (1,6). It is widely used in foods, pharmaceuticals paints and explosives.Purity:Min. 95%Color and Shape:White Powder
