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Chaen, H. et al.

Enzymatic synthesis of novel oligosaccharides from L-sorbose, maltose, and sucrose using kojibiose phosphorylase.

Glucosyl-L-sorbose, -maltose, and -sucrose were synthesized using kojibiose phosphorylase (KPase) from Thermoanaerobacter brockii ATCC35047 with beta-D-glucose-1-phosphate (beta-G1P) as a glucosyl donor. One disaccharide and two trisaccharides thus synthesized were isolated by Toyopearl HW-40S column chromatography. The results of KPase digestion, methylation analysis, and 13C-NMR studies indicated that these oligosaccharides were alpha-D-glucopyranosyl-(1-->5)-alpha-L-sorbopyranose, alpha-D-glucopyranosyl-(1-->2)-alpha-D-glucopyranosyl-(1-->4)-D-glucopyranose (4-alpha-D-kojibiosyl-glucose), and alpha-D-glucopyranosyl-(1-->2)-alpha-D-glucopyranosyl-(1-->2)-beta-D-fructofuranoside, which are all novel oligosaccharides. Glucosyl-L-sorbose was partially hydrolyzed to glucose and L-sorbose by alpha-glucosidases, while glucosyl-sucrose and glucosyl-maltose were not hydrolyzed by glucoamylase, alpha-glucosidases, or CGTase.[1]

References

Enzymatic synthesis of novel oligosaccharides from L-sorbose, maltose, and sucrose using kojibiose phosphorylase. Chaen, H., Nishimoto, T., Nakada, T., Fukuda, S., Kurimoto, M., Tsujisaka, Y. J. Biosci. Bioeng. (2001) [Pubmed]

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