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11078-31-2 Usage


Glucomannan is a linear polysaccharide comprising 1,4-β-linked D-glucosyl and D-mannosyl residues, where the glucose:mannose (Glc:Man) ratio varies considerably. Konjac (Amorphophallus konjac) glucomannan has a Glc:Man ratio of approx. 2:3, Aloe vera glucomannan a ratio of 1:2, and salep (Orchis mureo) glucomannan has a ratio of approximately 1:4. All of the polysaccharides are acetylated, which imparts water solubility. Glucomannans are major cell-wall reserve carbohydrates in tubers of several plant genera. At certain stages in the development of the plants, the glucomannan is degraded and serves as an energy source. The only industrially exploited glucomannan is konjac. Like carob galactomannan, this polysaccharide interacts with agar, carrageenan and xanthan to form solutions of increased viscosity or gels. This interaction is exploited in the pet-food industry in canned dog food. Recently, glucomannan has also been used in jelly sweets. In this application, the glucomannan has been found to be dangerous, leading to choking deaths of some consumers. This has led to a ban of these types of sweets in Europe and America, and a need for an accurate analytical procedure for glucomannan analysis.

Chemical Properties

Raw glucomannan is a soluble, fermentable, and highly viscous dietary fiber from the elephant yam or konjac plant, native to Asia. Konjac glucomannan (KGM) is water soluble and a viscous dietary fiber due to its high water absorbing capacity. The chemical structure of glucomannan consists in an 8:5 mannose:glucose ratio, linked by b-glycosidic bonds, making raw glucomannan the highest molecular weight and viscosity of any other known dietary fibers.


Glucomannan is purifi ed from konjac fl our by chemical processing.


Glucomannan is useful as a bulk laxative.

Biological Functions

Weight Management:Glucomannan is a soluble fiber with a high molecular weight and viscosity compared to other fibers, providing enhanced support for weight management. Significant mean weight loss was observed in one 8-week double blind trial, an effect that may be due to the effect of konjac glucomannan on satiety. A later study demonstrated that addition of a resistance and endurance exercise training program to a glucomannan-rich diet provides enhanced support for healthy body composition, lipid metabolism and triglycerides. Cardiovascular Health: In several controlled trials, konjac glucomannan supported healthy lipid metabolism and triglyceride levels, possibly by promoting healthy bile acid secretion. Additionally, it supports healthy glucose utilization and vascular function to support overall cardiovascular health. GI Health: As a dietary fiber, konjac glucomannan supports GI regularity. Research indicates that it also promotes healthy microflora balance, enhancing the growth of lactobacillus and bifidobacteria for a healthy gastrointestinal tract.

Side effects

Gastric discomfort, loose stools, flatulence, and diarrhea are the most commonly reported side effects.

Mode of action

Glucomannan improved blood lipid levels by enhancing fecal excretion of neutral sterol; and bile acids bind biliary salts, taking the blood lipids with them. Lipid-lowering action may include an inhibition of cholesterol absorption in the jejunum (19) and bile acid absorption in the ileum (33) mediated by viscosity or less postprandial stimulation of 3-hydroxy3-methylglutaryl-CoA reductase. Raw glucomannan is thought to prolong gastric emptying time, which increases satiety, reduces body weight, decreases the ingestion of foods that increase cholesterol and glucose concentrations, reduces the postprandial rise in plasma glucose, suppresses hepatic cholesterol synthesis, and increases the fecal elimination of cholesterol-containing bile acids. There is no evidence that nonviscous versions more commonly marketed in the U.S. provide any health effects.


In tablet form, there have been reports of esophageal and gastrointestinal obstruction, as well as choking to the point of causing obstruction. Advise patients to use glucomannan in powdered or capsule form (nonviscous, no health effects). Glucomannan displays no evidence of psychotropic activity, but now has considerable choking hazard.

Check Digit Verification of cas no

The CAS Registry Mumber 11078-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,1,0,7 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 11078-31:
72 % 10 = 2
So 11078-31-2 is a valid CAS Registry Number.

11078-31-2Upstream product

11078-31-2Downstream Products

11078-31-2Related news

Effect of NaCl on physicochemical properties of XANTHAN GUM (cas 11078-31-2) – Water chestnut starch complexes07/25/2019

Pasting and functional properties of water chestnut starch (WCS) alone and mixture of WCS and xanthan gum (XG) were determined by addition of NaCl (0.5, 1, and 2%) at fixed water chestnut starch (5%) and xanthan gum (0.3%) concentration. Results indicated that presence of NaCl had a significant ...detailed

Valorisation of chicken feathers for XANTHAN GUM (cas 11078-31-2) production using Xanthomonas campestris MO-0307/24/2019

Xanthan gum is an important commercial polysaccharide produced by Xanthomonas species. In this study, xanthan production was investigated using a local isolate of Xanthomonas campestris MO-03 in medium containing various concentrations of chicken feather peptone (CFP) as an enhancer substrate. C...detailed

Rheological characterisation of XANTHAN GUM (cas 11078-31-2) in brine solutions at high temperature07/23/2019

Xanthan gum solutions are used in the oil industry for flooding, drilling and completion operations. The stabilization of the structure of xanthan gum solutions in presence of salts increases the value of both the order-disorder transition temperature and the gel strength. This effect is very im...detailed

Biosynthesis, structure and antioxidant activities of XANTHAN GUM (cas 11078-31-2) from Xanthomonas campestris with additional furfural07/19/2019

Lignocellulosic-like materials are potentially low-cost fermentation substrates, but their pretreatment brings about by-products. This work investigated the effects of furfural on xanthan gum (XG) production, and product quality was evaluated by structure, viscosity and antioxidant capacities. X...detailed

Selective flotation of scheelite from calcite using XANTHAN GUM (cas 11078-31-2) as depressant07/18/2019

Xanthan gum (XG), a clean, non-toxic macromolecular polysaccharide, was studied as a depressant in the flotation separation of scheelite from calcite. Its selective inhibition mechanism was investigated by adsorption experiments, fourier transform infrared spectroscopy (FTIR) analysis and X-ray ...detailed

Rheological and microstructural behaviour of XANTHAN GUM (cas 11078-31-2) and XANTHAN GUM (cas 11078-31-2)-Tween 80 emulsions during in vitro digestion07/16/2019

The rheological, texture and microstructure properties of xanthan gum (XG) water solutions and XG emulsions, with and without Tween 80, were investigated and related to the emulsion fat lipolysis during in vitro digestion. The effect of digestion on the rheological properties of XG aqueous dispe...detailed

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