Transglucosidase maltose

Occurs in Sake, honeydew etc. Formed by acid hydrol. of Dextran and by the action of transglucosidase (enzyme of Aspergillus oryzae) on Maltose. 

C12H20G12 356.283 Reducing disaccharide. Synth, in an Aspergillus niger culture containing Maltose, M-15 and Glucuronic acid, G-538 by transglucosidase action. 

From various microbial sources have been isolated a sucrose phos-phorylase (sucrose -> orthophosphate transglucosidase) and a maltose phosphorylase (maltose orthophosphate transglucosidase). 

Wallenfels, using another strain of AspergiUus oryzae, also obtained a transglucosidase which forms similar oligosaccharides from maltose. 

I. is a-D-glucopyranosyl-l,4-D-glucopyranosyl-1,6-a-D-glucopyranose, which is formed as a component in - branched oligosaccharide syrups by action of transglucosidase (ot-glucosidase) on - maltose. It may also be found as a reversion product of the acid hydrolysis of starch, which is enriched in the mother liquor of glucose crystallization (->hydrol). 

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