Molecular weight polysaccharides

In this system, the high molecular weight polysaccharide polymer, is used to extend the rheological properties of bentonite. 

Richmond, M. D. and Yeung, E. S., Development of a laser-excited indirect fluorescence detection for high-molecular weight polysaccharides in capillary electrophoresis, Anal. Biochem., 210, 245, 1993. 

Prior to xylan removal it is possible to extract from the plant material those hemicelluloses soluble in dilute alkali. Soluble hemicelluloses of this type are the principal impurities extracted with xylan and consist for the most part of low molecular weight polysaccharides and polyuronides. Corn cob holocellulose may be freed of these compounds (called hemicellulose-B fraction, see Figure 2) by extraction with potas-... 

N-terminal amino acid Amino acid with an amino end group, nucleoside Contains a pentose and base, nucleotide Contains a phosphate, pentose, and base, oligosaccharide Low molecular weight polysaccharide, phenotype The observable, physical characteristics of an organism. 

Wood contains about 40-50% cellulose with the remaining being lignin and lower-molecular-weight polysaccharides. Treatment of wood pulp with acid and steam followed by basic sodium sulfide yields a product that is 92-98% cellulose. 

Almost all low molecular weight polysaccharides—degrees of polymerization (DP) less than 15-20—are soluble in water. Solubility decreases with increase in the ease with which molecules can associate and with narrowness of molecular weight distribution. 

More suitable for the determination of medium-and high-molecular-weight polysaccharides Shorter (50%) analysis times Higher recoveries with greater accuracy Directly applicable to sugar samples Far more sensitive Allows separation of a and / anomers Preferable for monosaccharides Derivatization required... 

Thereafter, to remove suspected high-molecular-weight polysaccharide contaminants, a modified filtration procedure was developed. This particular procedure involved first passing the original 80%-ethanol extract of the microbubble glycopeptide surfactant through a 5,000-dalton cut-off molecular filter (Nucle-... 

At present, it is accepted (26) that the acetal group at the Cl position of the anhydroglucose unit acts as a chromophore which in high molecular weight polysaccharides produces a band absorption and thus induces direct photolysis reactions. 

Larvae of many species of corals are induced to metamorphose by a carbohydrate-based cue from algal cell walls, in particular those of crustose coralline algae.142143 The inducer is apparently conserved across many algal species in the Pacific and Caribbean,144 and it has been identified as a high molecular weight polysaccharide with an active, water-soluble subunit.145 The isolated subunit has been adsorbed onto a resin base, which had activity similar to the natural inducer in laboratory and field studies.145... 

It should also be noted that maple syrup contains high molecular weight polysaccharides (80) which probably are also partially degraded during processing and thus can serve as sources for additional flavor compounds. 

Novel fractions of inulin are disclosed that have improved water solubility and water miscibility at ambient temperatures. The novel fractions are extracted from plant materials, including Jerusalem artichoke. The process for preparing the novel fractions involves holding the inulin-rich extraction water in a settling tank, which causes higher molecular weight polysaccharides to separate from water-soluble lower molecular weight polysaccharides. 

Gellan Gum occurs as an off white powder. It is a high-molecular-weight polysaccharide gum produced by fermenta-... 

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