Guar gum

About: Guar gum is a research topic. Over the lifetime, 5611 publications have been published within this topic receiving 105940 citations.

Thickened composition containing pyrogenic silica

Abstract: Composition comprises pyrogenic silica, at least one alkyl ether of a polysaccharide (I) formed from units comprising at least two different osidic rings, each unit having at least one hydroxyl group substituted by a saturated alkyl hydrocarbon chain, and an organic phase comprising at least one solvent medium for the (I). Preferably (I), 2-4 OH groups per unit are substituted by a saturated alkyl hydrocarbon chain. The alkyl chain preferably contains 1-24 (2-10) C and is especially selected from Me, Et, n-Pr, i-Pr, n-Bu, i-Bu and t-Bu. The osidic rings are preferably selected from mannose, galactose, glucose, furanose, rhamnose and arabinose. (I) are alkyl ethers of a gum such as guar gum, carob gum, karaya gum, tragacanth gum, or mixtures of these, particularly an alkylated galactomannan with 1-6 (1-3) C alkyl chains, and alkylated guar gum with an ethyl chain having a degree of substitution of 2-3. (I) has a molecular weight of greater than 200,000. The solvent medium for the (I) is e.g. an organic solvent and/or an oil. The weight ratio of the amount of solvent and/or oil to thickener (I) is 5-1000.

Effects of soluble dietary fibers on lipid metabolism and activities of intestinal disaccharidases in rats.

Abstract: The present study was aimed to investigate the effects of indigestible dextrin and polydextrose, soluble dietary fibers with low molecular weight, on lipid metabolism and disaccharidase activities of intestinal mucosa in rats fed a high sucrose diet. Their effects were compared with those of well-known soluble fibers, pectin, and guar gum, and also with an insoluble fiber, cellulose. Dietary fibers added to diets at the 5% (w/w) level were alpha-cellulose, pectin, guar gum, indigestible dextrin, and polydextrose. Male Sprague-Dawley rats were given free access to test diets for 6 weeks. Body weight gain was the lowest in rats fed guar gum, the highest in rats fed cellulose, and in-between in rats fed other diets. Although guar gum, pectin, and indigestible feeding dextrin had lower plasma lipid values than cellulose feeding did, the differences were statistically insignificant. Liver triglyceride of the guar gum-fed group was about a third that of the cellulose-fed group, but although those of rats fed polydextrose, indigestible dextrin, and pectin were lower than that of cellulose, the differences were insignificant. Liver cholesterol and phospholipid concentrations were similar among groups. Daily fecal excretion of total lipid, cholesterol, and bile acids were highest in rats fed guar gum, followed by pectin-fed and cellulose-fed rats, and the lowest in rats fed indigestible dextrin and polydextrose. Jejunal sucrase activity was low in the order of guar-gum, polydextrose, indigestible dextrin, pectin, and cellulose. The results indicate that the hypolipidemic effect of soluble dietary fibers would be lessened with reduction in molecular weight, but that the lower sucrase activity by soluble fibers with low molecular weight might be beneficial for hypoglycemic effect.