Cellulose-producing bacteria

摘要

PCT No. PCT/JP97/00514 Sec. 371 Date Feb. 3, 1998 Sec. 102(e) Date Feb. 3, 1998 PCT Filed Feb. 24, 1997 PCT Pub. No. WO97/40135 PCT Pub. Date Oct. 30, 1997This invention relates to a microorganism that is capable of producing a cellulosic product (referred to hereinafter as a "cellulose-producing bacterium") and belongs to a novel subspecies which is substantialy negative or very slightly positive in oxidation of acetates and lactates. This invention also relates to novel saccharide analog-resistant strains, amino acid analog-resistant strains and levan sucrase-defective strains. Further, this invention relates to a method for the production of cellulosic material (bacterial cellulose: "BC"), which comprises culturing these novel bactria and to bacterial cellulose which may be thus obtained. A larger amount of bacterial cellulose may be produced by culturing Acetobacter xylinum subsp. nonacetoxidans, the present resistant strains and the levan sucrase-defective strains, which have been derived and bred from the cellulose-producing bacteria, than by culturing the BPR 2001 strain in the medium containing especially sucrose or glucose as carbon sources.