Tracking spore-forming bacteria in food: From natural biodiversity to selection by processes

► A validated PCR-based tool was used to track sporeformers in 90 foodstuffs. ► Occurrence was presented for 5 genera and 9 species of Bacillus species. ► Multiple contaminations were detected for most food samples with or without spoilage. ► Emergence of thermophilic species was reported in ingredient and processed food.