title: Cellulose fermentation: effect of substrate pretreatment on microbial growth.
abstract: The effects of chemical, physical, and enzymatic treatments of rice straw and sugarcane bagasse on the microbial digestibility of cellulose have been investigated. Treatment with 4% NaOH for 15 min at 100 C increased the digestibility of cellulose from 29.4 to 73%. Treatment with 5.2% NH(3) could increase digestibility to 57.0% Treatments with sulfuric acid and crude cellulase preparation solubilized cellulose but did not increase the digestibility. Grinding or high-pressure cooking of the substrate had little effect on increasing the digestibility of cellulosic substrates by the Cellulomonas species.
mesh_terms: D000421:Alcaligenes / Q000254:growth & development / Q000378:metabolism; D000641:Ammonia / Q000494:pharmacology; D001419:Bacteria / Q000254:growth & development* / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism* / Q000494:pharmacology; D005285:Fermentation; D006358:Hot Temperature; D012275:Oryza; D010084:Oxidation-Reduction; D010316:Particle Size; D011312:Pressure; D012972:Sodium Hydroxide / Q000494:pharmacology; D013464:Sulfuric Acids / Q000494:pharmacology; D014961:X-Ray Diffraction
chemical_list: D013464:Sulfuric Acids; D012972:Sodium Hydroxide; D000641:Ammonia; D002482:Cellulose