Autotrophic biosynthesis of polyhydroxyalkanoate by Ralstonia eutropha from non-combustible gas mixture with low hydrogen content.

Objectives: To autotrophically produce polyhydroxyalkanoate (PHA) by Ralstonia eutropha without the risk of gas explosion, the feasibility of using a non-combustible gas mixture with low hydrogen content was investigated.

Results: A non-combustible gas mixture (H: O: CO: N = 3.6: 7.