Galactose arabinose and

Carbohydrates. Carbohydrates are the principal components of the cell wall, comprising 65—75% by weight of the dry wood. Total hydrolysis yields simple sugars, primarily glucose and xylose in hardwoods and glucose and mannose in softwoods. Minor amounts of galactose, arabinose, and rhamnose are present. 

It is worth noting that whenever present, galactose, arabinose, and xylose appeared in combination in most foods. None of the foods listed in the four tables contained one of these monosaccharides as the only sugar linked to the anthocyanins. 

The galactose, arabinose and xylose transporters of E. coli The bacterium E. coli possesses at least 7 proton-linked, active transport systems for sugars (for a recent review see [212]). Three of these transporters, which catalyze the uptake of L-arabinose, D-xylose and D-galactose by symport with protons, are related in sequence to the sugar transporters discussed above. They probably represent the best-characterized of the non-mammalian transporters, and so are discussed here in some detail. 

For monitoring the extent of polysaccharide hydrolysis, l.c. methods that sepeu ate and analyze the non-fermentable oligosaccharides (d.p. 3-30) derived from cellulose, hemicellulose, and pectins are useful, and have already been described (see Section III,l,c). For determination of the monosaccharide composition of completely hydrolyzed, plant polysaccharides, l.c. is especially useful and has been applied to the compositional analysis of hydrolyzed plant fiber,wood pulps,plant cell-walls,and cotton fibers.In these representative examples, the major sugars of interest, namely, glucose, xylose, galactose, arabinose, and mannose, have traditionally been difficult to resolve by l.c. The separa-... 

Glucose, galactose, arabinose (in neutral fraction) Uronic acids (Both galacturonicand glucuronic acid), rhamnose, galactose, arabinose and glucose (in acidic fraction) [22]. 

From the whole starfish were isolated three monosialoglycolipids whose carbohydrate chains contain glucose, galactose, arabinose, and N-glycolyl-neuraminic acid. From the results of partial hydrolysis with acid, methanoly-sis, methylation, and Cr03 oxidation, the following structures have been proposed for these sialoglycolipids. 

Control samples of sprucewood holocellulose were treated as described before, but without mannanase. The solutions contained almost no reducing sugars. After additional acid hydrolysis, about 1% sugars were found (dry weight of holocellulose = 100). Mannose were predominant glucose, galactose, arabinose, and xylose were present in smaller amounts. 

The presence of glucose, fructose, galactose, arabinose and citric, malic and tartaric acid did not produce interference on the quantification of gluconic acid. Only ascorbic acid yielded an amperometric response under the working conditions, due to the electrochemical oxidation of this compound at the applied potential. Nevertheless, the content of gluconic acid in honey samples is remarkably higher than the possible content of ascorbic acid. Consequently, no significant interference should be expected in the analysis of the proposed real samples. 

Total sugars include xylose, glucose, galactose, arabinose and mannose. 

Chromatographic Analysis of Wood Sugars. This analysis requires acid hydrolysis of the polysaccharide to yield a solution mixture of the five wood sugar monomers, i.e., glucose, xylose, galactose, arabinose, and mannose. The solution is neutralized, filtered. 

SSP is mainly composed of galactose, arabinose, and galacturonic acid, but also contains... 

Augestad I, Berner E (1954) Chromatographic separation of anomeric glycosides. II. New crystalline methylfuranosides of galactose, arabinose, and xylose. Acta Chem Scand... 

The main monosaccharides in vegetables, as well as in fruits, are glucose and fructose (Table 4.6). Other monosaccharides (such as galactose, arabinose and xylose) are present at low... 

Contains 3-1% volatile oil 60-70% resins composed mainly of 3-acetyl-P-boswellic acid and a-boswellic acid about 20% gum made up of galactose, arabinose, and 4-0-methylglucuronic acid 5-8% bassorin and bitter substances (jiangsu list and horhammer). ... 

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