Miscellaneous polysaccharides

Other polysaccharides found in nature include alginic acid that is isolated from certain brown seaweeds [17]. The monomers of this polymer, similar to cellulose, are linked trans or (3 to each other, through the 1,4 positions  

A sulfate group bearing polysaccharide is isolated from another seaweed that is red in color. This polymer is called carrageenan. It consists of two fractions [17]. The first one has the galactose units linked though 1 and 3 or 1 and 4 carbons. A sulfate group is found at carbon 2 on some units  

The second fraction has the some galactose units linked 1 and 4 and others have ether group linking carbons 3 and 6  

A similar polysaccharide is also obtained from seaweeds that is called agar. It is similar in structure, but has less sulfate groups per chain. 

Crab and shrimp shell wastes are an abundant source of chitin, a nitrogen atom-containing polysaccharide  

In vitro transfection efficiency of polymer-based formulations for gene therapy depends on a large variety of factors, which are described below.  

The effect of pH of the medium on transfection can be illustrated using chitosan. The transfection efficiency of chitosan largely depends upon the pH of the culture medium. The transfection efficiency at pH 6.9 was higher than that at pH 7.6. The dependence of transfection efficiency on the pH of the culture medium is considered to be due to the protonation of amines in chitosan. The p a of the primary amines in chitosan has been reported to be around 6.3-6.4.  

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IV. The Structures op Other Bacterial Polysaccharides 1. Miscellaneous Polysaccharides Resembling Deodrans... 

Other Polysaccharides In addition to xylan and glucomannan minor amounts of miscellaneous polysaccharides are present in hardwoods, partly of the same type as those occurring in softwoods. They might be important components for the living tree, although of little interest when considering the technical applications. 

Table 4 Miscellaneous polysaccharide gelling agents and their uses...

Miscellaneous Polysaccharides, Oligosaccharides, and Glycopeptides. — Lamin-aribiose has been modified to form the 3-methyl and (3-benzyI glycosides,and 4-0-o -D-mannopyranosyl-D-mannose has been chemically modified also. ... 

Miscellaneous Polysaccharides and Oligosaccharides.—The reaction of acidic polysaccharides with cetyltrimethylammonium bromide has been studied by recording the turbidity with an automatic titration device." The optimal conditions for the quantitative determination of various acidic polysaccharides were found from a correlation between ionic strength and turbidity. 

Miscellaneous Polysaccharides and Oligosaccharides.— Various oligosaccharides have been transformed into synthetic glycolipids (see Scheme 1). ... 

Miscellaneous polysaccharides—This includes compounds that are undigestible, but which are not likely to be detected by the procedures usually employed in the analyses of foods for fiber content. Examples of such compounds are inulin, a water-soluble polysaccharide made up of fructose units and found in various roots and tubers such as the Jerusalem artichoke, and galactan, a galactose polysaccharide found in agar, a material obtained from seaweed. 

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