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Synthesis of Glucosyl-sugar Alcohols Using Glycosyltransferases and Structural Identification of Glucosyl-maltitol
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  • Synthesis of Glucosyl-sugar Alcohols Using Glycosyltransferases and Structural Identification of Glucosyl-maltitol
  • Synthesis of Glucosyl-sugar Alcohols Using Glycosyltransferases and Structural Identification of Glucosyl-maltitol
저자명
Kim. Tae-Kwon,Park. Dong-Chan,Lee. Yong-Hyun
간행물명
Journal of microbiology and biotechnology
권/호정보
1997년|7권 5호|pp.310-317 (8 pages)
발행정보
한국미생물생명공학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Enzymatic synthesis of glucosyl-sugar alcohols using various transglycosylating enzymes, such as cyclodextrin glucanotransferase (CGTase), ${alpha}$-amylase, ${alpha}$-glucosidase, and pullulanase was investigated using various sugar alcohols, such as sorbitol, xylitol, inositol, maltitol, and lactitol as glucosyl acceptors. CGTase showed the highest transglycosylating activity to sugar alcohols compared to other transglycosylating enzymes, and inositol and maltitol were the most suitable glucosyl acceptors. Soluble starch, extruded starch, cyclodextrins, and maltooligosaccharides were also identified to be adequate glucosyl donors for transglycosylation reaction of CGTase to sugar alcohols. The synthesis of glucosyl-maltitol in the reaction system using extruded starch as the glucosyl donor and maltitol as the glucosyl acceptor showed the best results showing the highest transglycosylation yield. The transglycosylation products were purified by activated carbon column chromatography with ethanol gradient elution. Chemical structures of above transglucosylated products were analyzed by nuclear magnetic resonance spectroscopy, and two products were identified to be maltotritol and maltotetraitol, in which one or two glucose molecules attached to the parent maltitol molecule by a ${alpha}$-l,4-glucosidic bond, respectively.