Butyric acid-producing bacteria and its use

New offer of butyric acid-producing bacteria. Cryopreservation solution strains (the cells 10% (w / v) solution suspended in skim milk -2% sodium glutamate solution) (bacteria count: 2.0~5.5 × 1010cells / mL) was thawed, its after a portion was 1% inoculated in PY liquid medium (PYGA medium) 4 mL of sodium acetate was added and 0.5 (w / v)% of glucose 33 mM, and 24 hours anaerobically cultured at 37 ° C., cultured PYGA medium liquid was inoculated 1%, after 24 hours anaerobic incubation at 37 ° C., a part of the culture solution, 1% inoculated in PY medium containing sodium acetate and 0.5 (w / v)% of L- sorbose 33mM and, YIT 100 after 24 hours anaerobic incubation at 37 ° C., butyrate production amount in measuring the acid concentration in the culture solution, which is the reference strain of Anaerostipes hadrus (Eubacterium hadrum) Compared to 92T (DSM3119T), it is 1.5 times or more A. Butyric acid-producing bacteria belonging to the hadrus.