Polysaccharides hydrophilicity

The wide array of plant protein products, methods, and terms used to evaluate and describe functional properties makes it difficult to compare products and results of separate studies. In high protein products, water and fat absorption is attributable primarily to the protein. In other products, additional ingredient components have an effect. Hydrophilic polysaccharides greatly affect water absorption. Water absorption also is affected by product concentration, pH, temperature, and ionic strength. Fat absorption has been studied... 

Agar-Agar(Japanese Gelatin). A yel-white mucilaginous substance (hydrophilic polysaccharide) extracted from some marine algaeor sea weeds. It is insol in cold water but sol in hot w, after previous slow swelling (Ref 2). Its aq soln (hydrosol) cannot be easily coagulated by salts (Ref 3)... 

With the development of neutral hydrophilic methacrylates in Prague, originally for contact lens applications in the early 60 s113>, considerable interest was generated in the application of these materials in the cardiovasular environment. The qualitative argument was that such soft, water-rich surfaces must be relatively non-traumatic to proteins and cells. The development of neutral hydrophilic polysaccharide-based particles for protein chromatography in the late 60 s provided evidence that such surfaces do indeed show minimal binding of proteins. 

The emulsion stability of gum arabic (at constant nitrogen content) was found to increase with the polysaccharide molecular weight (Dickinson et al., 1991a, b). The emulsifying power is attributed to preferential adsorption of the protein moiety that bonds hydrophobically with oil, leaving the hydrophilic polysaccharide moiety free to protrude from the droplet surface into the surrounding aqueous medium (Randall et al., 1988). 

H, defined as the hydrophilicity, is the weight of hydrocolloidal water in grams adsorbed per gram of solute in 102 g of dispersion (3 is the slope of the Vt vs Cj graph. Equation (7.13) is based on the proportional nonsolute volume increase when increments of a hydrophilic polysaccharide are added to initially pure water. Not all gums showed the linearity expressed in Eq. (7.13). When there is nonlinearity, e.g., in one sample of konjac flour gum... 

Gums. Gums are hydrophobic or hydrophilic polysaccharides derived from plants or microorganisms that upon dispersing in either hot or cold water produce viscous mixtures or solutions (i.e., gels (1)). As used in the modern sense, the term gum includes any water-soluble or water-swellable polysaccharide or its derivative. This includes starch and dextrins and various derivatives of cellulose. The latter, however, are considered separately. 

Fig. 4 Self-assembled hydrogel nanoparticles of hydrophobically modified polysaccharides. Note that nanoparticles have multiple inner cores which physically cross-link the hydrophilic polysaccharide chain. (Modified from Ref...

Karaya gum is a hydrophilic polysaccharide obtained from the Khaya grandifiola tree. Khaya gum is used as a binding agent in tablets and for controlled release. Khaya gum provides a controlled release in paracetamol tablets for 5h. A combination of khaya gum and hy-droxypropyl methyl cellulose showed a zero-order release kinetics. Therefore, tablet matrices containing khaya gum can be used for sustain release (31,32). 

Hydrophilic polysaccharide fraction Cordyceps sinensis (CBHP) 46... 

Gum, natural n. A carbohydrate high polymer that is insoluble in alcohol and other organic solvents, but generally soluble or dispersible in water. Natural gums are hydrophilic polysaccharides composed of monosaccharide units joined by glycosidic bonds. They occur as exudations from various trees and shrubs in tropical areas or as phycocolloids (algae), and differ from... 

Among the several cellulose derivatives are xylan-type hemicelluloses, which are the most abundant heteropolysaccharides derived as by-products from agricultural processes. Over the past few years their use in food packaging and other applications has increased considerably [121]. Hemicelluloses such arabinoxylan are hydrophilic polysaccharides and their films tend to show high water uptake, becoming a drawback in the production of materials for the food sector. In order to improve both mechanical and barrier properties, Sarossy et al. [122] adopted the... 

The adjuvant effect of lipopolysaccharide (IPS) or endotoxin was described in 1956(Johnson, Gaines et al. 1956). LPS or endotoxin component of gram negative bacteria has a hydrophilic polysaccharide and lipophilic phospholipids which is responsible for adjuvant... 

Synonyms Alginate, sodium salt Alginic acid, monosodium sait Aiginic acid, sodium salt Algin (polysaccharide) Sodium alginate Sodium poiymannuronate Classification Hydrophilic polysaccharide... 

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