Oligosaccharides cellobiose

B. Bernet and A. Vasella, Intra- and intermolecular H-bonds of alcohols in DMSO. H-NMR analysis of inter-residue H-bonds in selected oligosaccharides Cellobiose, lactose, N,N"-di-acetylchitobiose, maltose, sucrose, agarose, and hyaluronates, Help. Chim. Acta, 83 (2000) 2055-2071. 

An interesting separation of four oligosaccharides (cellobiose, di-A -acetylchito-biose) was developed on an aminopropyl column (electrospray MS). A 60-min 100/0->0/100 acetonitrile/water gradient was used. This gradient was very... 

Most bacteria in the genus Clostridia are able to secrete a variety of carbohydrate-degrading enzymes (Lee et al. 1985), which enable them to directly saccharify a variety of polysaccharides (cellulose, starch, xylan, pectin, etc.) and oligosaccharides (cellobiose, lactose, maltose, etc.). This is a clear advantage over Zymomonas and modified E. coli for the production of biofuels from Kgnocellulosic biomass, as the latter bacteria are... 

Oligosaccharide derivatives of uridine 5 -pyrophosphate are probably present in higher plants. Cellobiose and a disaccharide composed of a glucose and an arabinose were identified among products of enzymic hydrolysis of a uridine diphosphate sugar fraction from larch wood.20... 

Figure 3-3 Separation of oligosaccharides by gel filtration. The sugars dissolved in distilled water were passed through a column of Sephadex G-25. The peaks contain (right to left) glucose, cellobiose, cellotriose, etc. From Flodin and Aspberg.64...

Figure 13. Taper chromatogram of the hydrolysis products from cello-oligosaccharides by Ex-1. Developed by the descending technique for 72 hr at room temperature on Whatman No. 1 paper, using 1-butanol pyridine water (6 4 3, v/v) as a solvent (S) standard, (Gt) glucose, (Ge) cellobiose, (Gs) cellotriose, (Gu) cellotetraose, (G5) cellopentaose, (G6) cellohexaose final enzyme concentration 3.0 X 10 2%.

The stimulation of the synthesis of the cellulase system of T. reesei QM 9414 by sophorose was established as shown by the results of experiments summarized in Table IV. Other than sophorose, of the glycosides and oligosaccharides tested, only lactose caused even a limited production of the enzymes of the cellulase system. Lactose is not as closely related structurally to sophorose as is, for example, the disaccharide laminaribiose it is more closely related structurally to cellobiose, which, despite being the major product of cellulose breakdown, does not promote enzyme production under the conditions of this experiment. It was noted that both intra- and extracellular constitutive enzyme levels produced by cells growing on glucose (or by resting cells without inducer, Table IV) are less than 0.5% of the fully induced levels and thus are negligible. 

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