The invention relates to a method for degrading beta-1,4-glycosidic-bond-containing high-molecular-weight polysaccharides. The method comprises the following steps: introducing an 80-180 mg/mL beta-1,4-glycosidic-bond-containing high-molecular-weight polysaccharide solution into an electrolyzer provided...
The cleaved-off different short molecules may undergo complete hydrolysis: ① acetyl xylan esterase removes the terminal acetate residues by break the ester linkage, α-D-glucuronidase attacks the α-1,2-glycosidic bond and releases the glucuronic acid side chain, and β-xylosidase hydrolyzes the ...
The β-1,3-glucanase acts on substrates with linear glucose sequences, such sequences are maintained as glycosidic type β-1,3[70]. They act by means of successivehydrolysisat the nonreducing end of theglucan, resulting in the formation ofoligosaccharidesand glucose[71]. Theenzymeβ-1,3-glu...
The absence of a reducing end and the type of glycosidic bond (β-1,2) turns the CβG into highly stable molecules [5]. Due to their ring shape and chemical properties, CβG resemble cyclodextrins which are molecular containers capable of entrapping, solubilizing and stabilizing a variety ...
Beta-D-Galp-(1->6)-beta-D-GalpNAc is an amino disaccharide consisting of a beta-D-galactopyranose residue and a 2-acetamido-2-deoxy-beta-D-galactopyranose residue joined in sequence by a (1->6) glycosidic bond. It is an amino disaccharide and a glycosylgalactose. It derives from a ...
3.1 Description Ajugose is a hexasaccharide that is verbascose which has an additional unit of alpha-D-galactopyranose attached by a 1->6 glycosidic linkage to the terminal galactosyl residue. It is a hexasaccharide and a raffinose family oligosaccharide. It derives from a verbascose....
by β-elimination reaction. The absorption peak at 825 cm−1pointed to an α-glycosidic bond while absorption at 893 cm−1was an sign of a β-glycosidic bond, although the bands at 930 cm−1, 1038 cm−1, 1078 cm−1, and 1161 cm−1also reflected β(1–3) ...
Crich et al., “Synthesis of the Salmonella Type El Core Trisaccharide as a Probe for the Generality of 1-(Benzenesulfinyl) piperidine/Triflic Anhydride Combination for Glycosidic Bond Formation from Thioglycosides”, J. Org. Chem., vol. 67, 2002, pp. 4640-4646 (published online Jan. 24,...
The present invention β-1,4 galactosyl transferase I activity as an indicator of liver cancer diagnosis; β-1,4 galactosyl transferase I activity increased to an increased expression level, or the sample β-1,4-galactosidase The increase in the number glycosidic bond. 将本发明的β-1,4半乳糖...
Overall, fragment ion spectra from He-CTD contained sufficient information to infer the connectivity specifically for each glycosidic bond. When testing He-CTD to resolve the order of beta-1,4- and beta-1,3-linkages in mixed-linked oligosaccharide standards, He-CTD spectra sometimes provided less...