Citric acid production from xylan and xylan hydrolysate by semi-solid culture of Aspergillus niger.
Citric acid production from xylan and xylan hydrolysate was done by Aspergillus niger Yang no. 2 cultivated in a semi-solid culture using bagasse as a carrier. Yang no. 2 produced 72.4 g/l and 52.6 g/l of citric acid in 5 d from 140 g/l of xylose and arabinose, respectively. Yang no. 2 produced 51.6 g/l of citric acid in 3 d from a concentrated xylan hydrolysate prepared by cellulase treatment, containing 100 g/l of reducing sugars. Moreover, Yang no. 2 directly produced 39.6 g/l of citric acid maximally in 3 d from 140 g/l of xylan.
Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo, Japan.
K
K
Kirimura
T
T
Watanabe
T
T
Sunagawa
S
S
Usami
D001234:Aspergillus niger / Q000254:growth & development / Q000378:metabolism*; D018533:Biomass; D002482:Cellulose / Q000378:metabolism; D019343:Citric Acid / Q000378:metabolism*; D003470:Culture Media; D006868:Hydrolysis; D010944:Plants / Q000378:metabolism; D043325:Xylan Endo-1,3-beta-Xylosidase; D014990:Xylans / Q000378:metabolism*; D014995:Xylosidases / Q000378:metabolism
D003470:Culture Media; D014990:Xylans; D019343:Citric Acid; D002482:Cellulose; D014995:Xylosidases; D043325:Xylan Endo-1,3-beta-Xylosidase