Bacillus firmus
Bacillus firmus is an alkaliphilic, spore-forming soil bacterium studied primarily in industrial biotechnology contexts, including enzyme production (xylanases, nucleases, cyclomaltodextrin glucanotransferases) and agricultural biocontrol — one in vitro study showed activity against plant-parasitic nematodes. Some older papers describe basic bioenergetics of its ATP synthase. Notably, one in vitro paper documented heat-stable toxin production by B. firmus alongside related Bacillus species, which is a food safety concern relevant to the genus. Probiotic characterization for B. firmus specific to human health is not established in the associated literature, and safety considerations for this species in human use have not been resolved in the available evidence.
Where it's been studied Tags come from a conservative keyword scan of each paper's title, abstract, and summary. A tag is research coverage, not measured effect. How we classify this →
Share of this strain's 56 body-system-tagged papers that concern each system. Research coverage, not measured effect.
+1 more systems
Symptoms in the research A tag means the paper's text names the symptom or condition — research coverage, not evidence of benefit. How we classify this →
Share of this strain's 11 symptom-tagged papers that mention each symptom or condition. Research coverage, not evidence of benefit.
Strains of this species
2 strains of Bacillus firmus in the index, with 2 linked papers between them.
Bacillus firmus ST5
Bacillus firmus ST5 is a thermophilic strain indexed here in connection with a single 2022 in vitro study investigating the capacity of thermophilic bacteria to degrade polyethylene microplastics.
Bacillus firmus NCTC 10335
Bacillus firmus NCTC 10335 is a type strain used primarily in taxonomic and microbiological reference contexts.
Research Study-type filters use AI-classified labels, audited but not guaranteed — check the paper itself before leaning on one. How we classify this →
436 papers reference this strain in the probiotic database.
Discussion
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