title: Stepwise mutational improvement of Aspergillus niger for citric acid productivity in cane molasses.
mesh_terms: D001230:Aspergillus / Q000378:metabolism*; D001234:Aspergillus niger / Q000302:isolation & purification / Q000378:metabolism*; D002951:Citrates / Q000096:biosynthesis*; D003037:Cobalt Radioisotopes; D005285:Fermentation; D008965:Molasses; D009154:Mutation
chemical_list: D002951:Citrates; D003037:Cobalt Radioisotopes