PCT No. PCT/DK92/00098 Sec. 371 Date Sep. 15, 1993 Sec. 102(e) Date Sep. 15, 1993 PCT Filed Mar. 27, 1992 PCT Pub. No. WO92/17571 PCT Pub. Date Oct. 15, 1992The present invention relates to catalases obtained from a strain of Scytalidium thermophilum or Humicola insolens which retains at least 75% residual activity after 20 minutes at 70 DEG C. and a pH in the range of 9.0-10.5 in the presence of 40 mM polyvinyl pyrrolidone and methods for producing and using same.