@article{Anyanwu_Okerentugba_2013, title={Citric Acid Production by Wild and UV – Treated Strains of Aspergillus niger on Two Different Mineral Salt Media}, volume={1}, url={https://www.nepjol.info/index.php/IJASBT/article/view/8358}, DOI={10.3126/ijasbt.v1i3.8358}, abstractNote={<p>Microbial production of citric acid by a novel <em>Aspergillus niger</em> EE-12 and its UV – treated strain (UV-1) were carried out in shake flask cultures using mineral salt media containing sucrose or fructose as the carbon and energy sources. The highest citric acid concentration (36.1g/l) was obtained with the UV – treated strain UV-1 after 144 hours in medium containing sucrose and this was significantly higher (p<0.05) than the concentration produced by its parent strain EE-12. Citric acid production using medium containing sucrose (Sucrose salt medium) was significantly higher (p<0.05) than from medium containing fructose (Fructose salt medium) for both organisms. Product and growth yield coefficients (Y<sub>CA/S</sub>, Y<sub>CA/F, </sub>Y<sub>CA/X</sub>, Y<sub>X/S</sub>, Y<sub>X/F</sub>) and volumetric rates (Q<sub>F</sub>, Q<sub>S</sub>, Q<sub>CA</sub>, Q<sub>X</sub>) were studied and compared for each of the test organisms based on the media (sucrose and fructose salt media) using students t-test analysis. This research indicated that the fungi strains are efficient for citric acid production using sucrose based medium.</p><p>DOI: <a href="http://dx.doi.org/10.3126/ijasbt.v1i3.8358">http://dx.doi.org/10.3126/ijasbt.v1i3.8358</a></p> <p>Int J Appl Sci Biotechnol, Vol. 1(3) 2013 : 145-153</p>}, number={3}, journal={International Journal of Applied Sciences and Biotechnology}, author={Anyanwu, Valentine Enyinna and Okerentugba, Phillip O.}, year={2013}, month={Sep.}, pages={145–153} }