PROBLEM TO BE SOLVED: To provide a stickiness-decreased Bacillus natto strain which can stably produce fermented soybeans with poor stickiness which has been difficult to stably produce by conventional Bacillus natto strain, and to provide a production method of fermented soybeans and fermented soybeans by the Bacillus natto strain.SOLUTION: Fermented soybeans in which only stickiness is poor but which has no inferiority in taste, texture, and flavor as compared to conventional Bacillus natto strains can be produced by using a stickiness-decreased Bacillus natto strains, bacillus subtilis IBARAKI lst-1 (Accession number: NITE P-01836) which is a novel microorganism variant belonging to Bacillus subtilis.COPYRIGHT: (C)2016,JPO&INPIT【課題】従来の納豆菌株では安定的に製造することが困難であった糸引きの弱い納豆を安定して製造できる糸引性低下納豆菌株及び該納豆菌株による納豆の製造方法と納豆を提供する。【解決手段】バチルス・サブチリス(Bacillus subtilis)に属する新規な微生物変異株であるバチルス・サブチリスIBARAKI lst-1(受託番号:NITE P-01836)である糸引性低下納豆菌株を用いることにより、味、食感及び風味は従来の納豆菌株と遜色なく、糸引きだけが弱い納豆が製造できる。【選択図】図1
