Arabinose glucose

The concentrations of nine sugars (fucose, methylglucose, arabinose, glucose, fructose, lactose, sucrose, cellobiose, and maltose) in beer, milk, and soda are determined using an... 

Sugars Arabinose, glucose, fructo.se, galactose, maltose, raffinose, rhamnose, ribose, sucrose, xylose... 

Fig. 1. Yield of monosaccharides after dilute-acid hydrolysis of BSG as a function of CS. (A), Xylose ( ), arabinose ( ), glucose. The lines only show trends.

Fischer applied the Kiliani procedure (Scheme 1.1) to arabinose 5, an aldopentose obtained from sugar beet, and this produced the enantiomer 6 of the hexonic acid derivable from natural glucose (Figure 1.4). This observation led to the conclusion that the D-enantiomers of arabinose, glucose, mannose, and fructose all share the same configurations at their three highest numbered chiral centers. Moreover, the arabinose obtained from beet was the L-isomer. 

Arabinose is converted by the KHiani-Fischer synthesis into (+)-gl cose and (+)-mannose. (-h)-Glucose and (+) mannose therefore arc cpimers, differing only in configuration about C-2, and have the same configuration about C-3, C-4, and C-5 as does (-)-arabinose. ( + )-Glucose and (+)-mannose must be III and IV, or VII and VIII. 

Fig. 3-105. Separation of various sugar alcohols and saccharides. - Separator column CarboPac PA-1 eluent 0.15 mol/L NaOH flow rate 1 mL/min detection pulsed amperometry at a Au working electrode injection volume 50 pL solute concentrations 10 ppm xylitol, 5 ppm sorbitol, 20 ppm each of rhamnose, arabinose, glucose, fructose, and lactose, 100 ppm sucrose and raffmose, 50 ppm maltose.

Xylose, arabinose, glucose and galactose in sorghum hydrolydate... 

Rhamnose, xylose, arabinose, glucose, galactose, maltose Aminex A6 Li+ 85% Ethanol-water... 

The required a,a -fiee dipyrrylmethanes 170 were prepared by condensation of glyceraldehyde, furanosyl and pyranosyl aldose derivatives (arabinose, glucose, xylose) with pyrrole, in dichloromethane, at room temperatme in the presence of SnCU (Scheme 32). 

Band type Xylose Arabinose Glucose Mannose Galactose... 

Table 1 shows the separation of alcohols (2,3-butanediol, ethanol, methanol), glycols (glycerol), alditols (erythritol, arabitol, sorbitol, galactitol, mannitol), and carbohydrates (rhamnose, arabinose, glucose, galactose, lactose, sucrose, raffinose, maltose) using a CarboPac MAI column set with 480 mM sodium hydroxide eluent... 

As an example, Figure 3.228 compares the separation of rhamnose, arabinose, glucose, ribose, lactose, and cellobiose carried out in a conventional way with 0.1 mol/L NaOH (a) and with 1 mmol/L barium hydroxide added to the NaOH eluent (b). 

The macrocycle (1) complexes with free sugars (frivouring 2-deoxyribose, ribose > erythrose, arabinose > glucose, mannose > xylose, lyxose) and enables them to be solubilized in carbon tetrachloride from aqueous solution and hence converted to their glycosides with the furanosides being favoured. The preparation of methyl a-D-[U C]glucopyranoside (from the labelled free sugar) has been reported. ... 

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