Pectin-like polysaccharide

Enzymes should be added to the feed together with the pre-mix. Granulated enzyme products may readily be mixed with feed components, as they are based on normal feed components such as wheat or soy grits. A wide range of enzyme products are available. Enzyme products should contain specific enzyme activities necessary to degrade specific substances such as glucans, starch, protein, pectin-like polysaccharides, phytic acid, raffinose, stachyose, hemicellulose, and cellulose. 

The water extract from Theae folium (green tea) contains manganese com-plexed by a pectin-like polysaccharide [70]. Administration of a preparation of this extract resulted in an increased signal of the stomach contents in -weighted imaging [70]. Manganese(II) pectin also showed contrast-enhancing activity in phantoms [71]. 

The side chains in tragacanthic acid have subsequently been encountered in the pectin-like polysaccharides from soy-bean cotyledons40 and soy-bean hulls.126 Very small proportions of single D-... 

Da [120,121]. A xyloglucan, MW 79,500 Da, was isolated from the leaves and stems of E. purpurea., and a pectin-like polysaccharide from the expressed sap [122]. Recently, lectins have also been described as biologically active substances in different parts of . purpurea [86]. 

Pectin plant polysaccharide capable of producing a gel-like material. 

Pectin-like material is secreted from suspension tissue culture cells of sycamore and the rate of secretion of these polysaccharides can be measured using radioactive arabinose which is incorporated into arabinogalactans. The addition of Ca increased the steady state rate of secretion within seconds. The stimulation was brought about by an action on the normal mechanism of cell-wall polysaccharide export from the cytoplasm. It seemed therefore that the fusion of the vesicles with the plasmamembrane was a rate-limiting step and is probably a control point. The action of the Ca " " was to increase the rate of fusion at the cell membrane so that there was an immediate increase in the amount of polysaccharide secreted (35). 

Within the gut, oxidative damage may be prevented by phytic acid, obtained from cereals and vegetables (Graf et al., 1987), and by soluble non-starch polysaccharides like pectin (Kohen et al., 1993). The use of antioxidant vitamins in the treatment of inflammatory bowel disease has also been su ested (Evans et al., 1990). 

It seems likely that the enzyme complexes for hemicelluloses, pectins and cellulose are constructed, at least in part, on the endoplasmic reticulum and then transferred to the Golgi apparatus, where they are modified and sorted so that they can be segregated within the compartments of the Golgi cisternae (30,31). The complex for cellulose synthesis is not normally active within the Golgi apparatus and it is transported to active sites at the plasma membrane (1). The hemicelluloses and pectins are formed within vesicles and cisternae of the Golgi apparatus and the vesicles are transported to the plasma membrane, where fusion occurs and the polysaccharides are packed into the wall (1). It is not known whether particular polysaccharides such as the xylans of the hemicellulose and the arabinogalactans of the pectins are transported in separate vesicles or together in one vesicle. Nor is it known if the complex for cellulose synthesis is transported by vesicles which carry hemicellulose and pectin polysaccharides. 

Our preliminary experiments suggest that, like the interaction between glycosaminoglycans and lipoproteins, the interaction between pectin and lipoprotein is also caused by the electrostatic attraction between polyanionic pectin and cationic lipoprotein. To elucidate this hypothesis, the charge profile of lipoproteins will be altered chemically and the influence of these alterations on the interaction with pectic polysaccharides at optimum experimental conditions will be determined. 

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