Betiku, Eriola, E.O. Ajala, and S.K. Layokun. 2011. “Optimization Of Breadfruit Hydrolysate Medium For Gluconic Acid Production By Filamentous Fungus Aspergillus Niger”. Ife Journal of Technology 20 (2), 30-35. http://ijt.oauife.edu.ng/index.php/ijt/article/view/89.