HITZEBESTÄNDIGE PULLULANASE

摘要

PCT No. PCT/DK92/00079 Sec. 371 Date Aug. 3, 1993 Sec. 102(e) Date Aug. 3, 1993 PCT Filed Mar. 13, 1992 PCT Pub. No. WO92/16617 PCT Pub. Date Oct. 1, 1992.The invention relates to thermostable pullulanases endogenous to the strain Fervidobacterium sp. Ven 5, DSM 6204, or a mutant thereof which is capable of producing the pullulanase having (a) a temperature optimum in the range 80-90 DEG C.; (b) a pH optimum in the range of 5-7; and (c) at least 60% residual activity after 24 hours of incubation at pH 6.0. The invention also relates to the use of the pullulanases in starch converting processes, and to saccharification processes.