Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo

Tomohiko Sonoda

Michio Kubota

Toshio Miyake

Shigeharu Fukuda

Tomoyuki Nishimoto

Hajime Aga

Hikaru Masahiro Watanabe

Takanobu Higashiyama

The present invention aims to provide a novel process for producing isomaltose and isomaltitol, and uses thereof, and it solves the object by establishing a process for producing isomaltose comprising a step of contacting a saccharide, having the &#x3b1;-1,4 glucosidic linkage as the linkage of non-reducing end and a glucose polymerization degree of at least two, with an &#x3b1;-isomaltosyl-transferring enzyme and an &#x3b1;-isomaltosylglucosaccharide-forming enzyme derived from a specific microorganism; a process for producing isomaltitol using the isomaltose produced by the above process; saccharide compositions comprising the isomaltose and/or the isomaltitol produced by the above processes; and uses thereof.

Processes for producing isomaltose and isomaltitol and use thereof

The object of the present invention is to provide a novel glycosyl derivative of cyclotetrasaccharide represented by cyclo{&#x2192;6)-&#x3b1;-D-glucopyranosyl-(1&#x2192;3)-&#x3b1;-D-glucopyranosyl-(1&#x2192;6)-&#x3b1;-D-glucopyranosyl-(1&#x2192;3)-&#x3b1;-D-glucopyranosyl-(1&#x2192;}, and it is solved by providing a branched cyclotetrasaccharide, wherein one or more hydrogen atoms in the hydroxyl groups of cyclotetrasaccharide are replaced with an optionally substituted glycosyl group, with the proviso that, when only one hydrogen atom in the C-6 hydroxyl group among the above hydrogen atoms is substituted with an optionally-substituted glycosyl group, the substituted glycosyl group is one selected from those excluding D-glucosyl group.

Branched cyclic tetrasaccharide, process for producing the same, and use

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Okayama, Japan

Tomohiko Sonoda