TERMOSTABIL CYCLODEXTRINGLYCOSYLTRANSFERASE FREMSTILLING OG ANVENDELSE DERAF

摘要

Previously unknown cyclodextrin glycosyl transferases (CGTases) can be prepared by the anaerobic culture of thermoanaerobacter or thermoanaerobium strains. They are more thermostable than known cgTases and have a temperature optimum at approx. 95 degree C. The previously unknown CGTases can be used for liquefying starch at pH 4.5 and temperatures greater than 100 degree C in the preparation of glucose or ethanol. They can furthermore be used for converting liquefied starch into cyclodextrin at a temperature of 80-90 degree C.