Polissacáridos
Os polissacarídeos são compostos orgânicos formados pela união de vários monômeros, que são ligados por ligações glicosídicas para criar moléculas grandes e frequentemente ramificadas. Esses carboidratos complexos desempenham papéis cruciais em várias funções biológicas, incluindo armazenamento de energia, suporte estrutural e comunicação célula-célula. Nesta seção, você encontrará uma ampla variedade de polissacarídeos essenciais para pesquisas em bioquímica, biologia molecular e glicosciência. Esses compostos são vitais para estudar vias metabólicas, estruturas da parede celular e o potencial terapêutico dos carboidratos. Na CymitQuimica, fornecemos polissacarídeos de alta qualidade para apoiar sua pesquisa científica, garantindo precisão e confiabilidade nos seus resultados experimentais.
Foram encontrados 506 produtos de "Polissacáridos"
Ordenar por
Pureza (%)
0
100
|
0
|
50
|
90
|
95
|
100
Tara gum
CAS:Tara gum is a galactomannan that is obtained from the seeds of the tara shrub Caesalpinia spinosa which is a native of the northern regions of Africa and South America. The gum is described as having a backbone of (1,4)-linked β-D-mannopyranosyl units one third of which possess a single unit side chain of (1,6)-linked α-D-galactopyranose. The gum forms gels with carrageenan and xanthan in a similar manner to guar and locust bean gum. Currently, only small quantities of tara gum are sold for use as food thickeners and stabilisers.Pureza:Min. 95%Cor e Forma: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’.Pureza:Min. 95%Cor e Forma:White PowderPolyguluronic acid
CAS:Polyguluronic acid is produced from alginates by partial hydrolysis and chromatography of brown algae such as Laminaria digitata, Ascophyllum nodosum and Fucus spp.
The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.MW is ca 6000 - 8000Da.poly-M levels are ca 3%Pureza:(%) Min. 80%Cor e Forma:Off-White PowderPeso molecular:194.14Fucoidan - Ascophyllum nodosum
CAS:Please enquire for more information about Fucoidan - Ascophyllum nodosum including the price, delivery time and more detailed product information at the technical inquiry form on this pageCor e Forma:Powderb-D-Glucan-from yeast (Saccharomyces cerevisiae)
CAS:In addition to the β-glucans from cereals, another group of β-glucans are found in the cell walls of yeast (Saccharomyces cerevisiae), bacteria and fungi, with significantly differing physicochemical properties dependent on source. Typically these β-glucans form a linear backbone with 1,3 β-glycosidic bonds but vary with respect to molecular mass, solubility, viscosity, branching structure, and gelation properties, causing diverse physiological effects in animals. They are structural components in the cell walls of Saccharomyces cerevisiae and to provide stability, they have a few b-1,6 branch points that lock into other cell wall components (1 in 5 glucose residues). So in any extraction you get a few 1,6 linked glucose residues ~5%. The yeast and fungal β-glucans have been investigated for their ability to modulate the immune system. They are also used in various nutraceutical and cosmetic products, as texturing agents, and as fibre supplements. Their detailed molecular structures are key to the physical properties that they exhibit, such as water solubility, viscosity, gelation properties and physiological functions. The image was kindly provided by Dr. Chris Lawson.Pureza:(%) Min. 80%Cor e Forma:Off-White PowderN-Acetyl-heparin
CAS:N-Acetyl 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.Pureza:Min. 95%Cor e Forma:PowderCarboxymethyl chitosan
CAS:Carboxymethyl chitosan has good solubility in water and unique chemical, physical and biological properties such as high viscosity, large hydrodynamic volume, low toxicity, biocompatibility and good ability to form films, fibres and hydrogels. For this reason, it has been extensively used in many biomedical fields such as a moisture-retention agent, bactericide, wound dressing agent, in artificial bone and skin, as blood anticoagulant and as a component in different drug delivery matrices. The reactive ligands COOH and NH2 groups are available for metal chelation and dye binding.Cor e Forma:White PowderLaminaran - from Eisenia bicyclis
CAS:Laminaran is a polysaccharide that co-occurs with fucoidan and alginate in brown seaweeds such as Laminaria digitata, Laminaria cloustoni, Eisenia bicyclis and Thallus laminariae. It is a β-1,3-linked glucan which it is claimed stimulates the immune system in mammals and fish.
The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.Cor e Forma:White Off-White PowderHyaluronic acid sodium salt - Average MW 70,000-80,000
CAS:Gycosaminoglycan in many organs; joint lubricant and shock absorberFórmula:(C14H20NO11Na)nPureza:Min. 90 Area-%Cor e Forma:PowderHyaluronate fluorescein - MW - 800kDa
Hyaluronic acid, a polysaccharide with alternating β (1,3) glucuronide and β (1,4) glucosamine residues labelled with 5-amino-fluorescein gives a yellow fibrous product, which is soluble in both water and electrolytes. Fluorescein-labelled hyaluronic acid can be used as a probe to follow the fate of hyaluronan in vitro and greatly enhances the visualisation of the permeation of substrates through skin and other tissues. Other applications of fluorescein-labelled hyaluronic acid have been reported in cancer research.Pureza:(%) Min. 95%Cor e Forma:Yellow Orange PowderFucoidan, durvillea
CAS:A fucan sulphate found in brown marine algae (Phaeophyta-typically Fucus vesiculotus, Durvillea (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’.Pureza:Min. 95%Cor e Forma:White PowderSchizophyllan
CAS:Schizophyllan is a neutral extracellular polysaccharide produced by the fungus Schyizophyllum commune. Schizophyllan is a β-1,3 beta glucan with β-1,6 branches and a molecular weight of around 450 kDa. It is reported that this polysaccharide can stimulate the immune system, chelate metals, act as an adjuvant in delivering drugs and aid in the production of nanofibres. The image was kindly provided by Dr. Chris Lawson.Cor e Forma:White Powder(Hydroxypropyl)methyl cellulose phthalate
CAS:Hypromellose phthalate (hydroxypropyl methylcellulose phthalate, or HPMCP) is a phthalic acid ester of hydroxypropyl methylcellulose. Hypromellose phthalate was introduced in 1971 as a cellulose derivative for enteric coatings, used to protect drugs from degradation by gastric acid or to prevent them from causing side effects in the stomach. HPMCP is also used in sustained-release preparations, in binders and as microcapsule bases.Cor e Forma:White Off-White PowderGlycogen - from bovine liver
CAS:Glycogen is a highly branched polysaccharide of glucose that serves as a form of energy storage in animals and fungi. It is the main storage form of glucose in the body. In humans, glycogen is made and stored primarily in liver and muscle cells and functions as the second most important energy storage molecule to fat which is held in adipose tissue. Glycogen is analogous to starch and has a structure similar to amylopectin, but is more extensively branched and compact than starch. It occurs as granules in the cytosol/cytoplasm in many cell types, and plays an important role in the glucose cycle.Fórmula:(C6H10O5)nPureza:Min. 95%Cor e Forma:PowderPeso molecular:162.05282Dextran sulfate sodium salt - MW 9,000-11,000 - from Leuconostoc spp
CAS:Dextran sulphate is a dextran derivative whose ulcer (colitis) -causing properties were first reported in hamsters and extrapolated a few years later to mice and rats. The exact mechanisms through which dextran sulphate induces intestinal inflammation are unclear but may be the result of direct damage of the monolayer of epithelial cells in the colon, leading to the crossing of intestinal contents (for e.g. commensal bacteria and their products) into underlying tissue and therefore induction of inflammation. The dextran sulphate sodium induced ulceration model in laboratory animals has some advantages, when compared to other animal models of colitis, due to its simplicity and similarities to human inflammatory bowel disease.Pureza:Min. 95%Cor e Forma:PowderFluorescein isothiocyanate-carboxymethyl-dextran - Average MW 40,000
Fluorescein isothiocyanate carboxymethyl dextran (FITC-CM Dextran) has been reported to provide a valuable carrier for nanoparticles of iron oxide. These products provide a potent tool for contrast enhancement in magnetic resonance imaging.Pureza:Min. 95%Psyllium seed gum
CAS:Psyllium seed gum comes from plants of the Plantago genus and is cultivated mainly in the Mediterranian and in India. Psyllium has been used for many years medical applications and more recently there has been a resurgency of interest because it has been seen as a soluble dietary fibre. The proposed structure is of a backbone of D-xylopyranosyl units linked (1,4) and (1,3) with the 4-linked units bearing side chains. The side chains consist of α-L-arabinofuranosyl units linked (1,3) and (1,2) and β-D-xylopyranosyl units linked (1,3) and (1,2) and the α-D-GalAρ-(1,2)-α-L-Rhaρ aldobiuronic acid units linked (1,2) to the main chain.
Fórmula:C33H66O2Pureza:Min. 95%Cor e Forma:PowderPeso molecular:494.90 g/molFucoidan, macrocystis pyrifera
CAS:A fucan sulphate found in brown marine algae (Phaeophyta-typically Fucus vesiculotus, Ascophyllum nodosum, Alaria and Macrocystis pyrifyra (illustrated) 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 fucose content of this fucan is approx. 31% and it also contains galactose (approx. 2.2%), uronic acid (approx. 12.4%) and sulfate (approx. 32.5%).
The image was kindly provided by Prof Mike Guiry from Cork who runs ‘The Seaweed Site’.Pureza:Min. 95%Cor e Forma:White PowderDe-N-sulfated heparin sodium
CAS:Porcine mucosal heparin derivative; no anti-coagulant activityCor e Forma:PowderChitosan - Molecular weight 190,000-310,000
CAS:Chitosan is the deacetylated form of chitin. The polysaccharide is deacetylated in order to render it soluble, which is then possible at pH values of less than 7 (normally in dilute acid). This then allows the material to be used in a number of industrial applications as a binder and film former.
Cor e Forma:Off-White Powder
