THERMOSTABLE CYCLODEXTRIN GLYCOSYL TRANSFERASE, ITS PRODUCTION AND USE

摘要

Novel cyclodextrin glycosyl transferases (CGTase) can be produced by anaerobic cultivation of strains of Thermoanaerobacter or Thermoanaerobium. They are more thermostable than known CGTases and have temperature optimum about 95 DEG C. The novel CGTases can be used for starch liquefaction at pH 4.5 and temperature exceeding 100 DEG C in the production of dextrose or ethanol. They can also be used for conversion of liquefied starch to cyclodextrin at a temperature of 80-90 DEG C.