title: Effect of acetic and trans-aconitic acids on citric acid production by Aspergillus niger.
abstract: The effect of acetic and trans-aconitic acids on citric acid production by A. niger at different pH values was studied. The presence of acetic acid at pH 2 prevented spore germination, while it decreased the fungal growth and citric acid production at other pH values. In the presence of trans-aconitic acid the inhibition was less marked at lower than at higher pH values.
mesh_terms: D000085:Acetates / Q000378:metabolism*; D000156:Aconitic Acid / Q000378:metabolism*; D001230:Aspergillus / Q000378:metabolism*; D001234:Aspergillus niger / Q000254:growth & development / Q000378:metabolism*; D002951:Citrates / Q000096:biosynthesis*; D003470:Culture Media; D006863:Hydrogen-Ion Concentration; D008965:Molasses; D013172:Spores, Fungal / Q000254:growth & development; D013237:Stereoisomerism; D014233:Tricarboxylic Acids / Q000378:metabolism*
chemical_list: D000085:Acetates; D002951:Citrates; D003470:Culture Media; D014233:Tricarboxylic Acids; D000156:Aconitic Acid