	US 12,297,420 B2
	Agent for regulating concentration of gas for anaerobic bacterium culture and method for culturing anaerobic bacterium using same
Tatsuya Chinzei, Tokyo (JP); and Masao Someya, Tokyo (JP)
Assigned to MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
Appl. No. 17/619,799
Filed by MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
PCT Filed Jun. 8, 2020, PCT No. PCT/JP2020/022460 § 371(c)(1), (2) Date Dec. 16, 2021, PCT Pub. No. WO2020/261951, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-116715 (JP), filed on Jun. 24, 2019.
Prior Publication US 2022/0325224 A1, Oct. 13, 2022
Int. Cl. C12N 1/20 (2006.01); C12M 1/34 (2006.01)

CPC C12M 41/34 (2013.01) [C12M 41/30 (2013.01); C12M 41/46 (2013.01); C12N 1/20 (2013.01)]

4 Claims

1. A gas concentration regulator composition for use in culture of anaerobic bacteria, comprising: (a) dehydroascorbic acid; (b) an ascorbic acid component; (c) a transition metal catalyst; (d) activated carbon; (e) at least one selected from the group consisting of an alkali metal carbonate, an alkali metal hydroxide, and an alkaline earth metal hydroxide; and (f) water,

wherein a molar ratio [(b)/(a)] of (b) the ascorbic acid component to (a) the dehydroascorbic acid is 1.5 or less.