alicyclobacillus cellulosilyticus alicyclobacillus cellulosilyticus alicyclobacillus cellulosilyticus is a species of acidophilic, thermophilic, strictly aerobic, bacterium. the bacteria gram stains negative and produce endospores. it was first "isolated from steamed japanese cedar chips from a lumber mill in gobō, wakayama japan." the species was first described in 2014, and the name refers to the species' ability to digest cellulose. alicyclobacillus cellulosilyticus scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: alicyclobacillaceae genus: alicyclobacillus species: a. cellulosilyticus binomial name alicyclobacillus cellulosilyticuskusube et al. 2014 the optimum growth temperature for a. cellulosilyticus is 55 °c, and can grow in the 40–67.5 °c range. the optimum ph is 4.8, and can grow in ph 3.5-6.5.