Gibberellic Acid Production from Corn Cob Residues via Fermentation with Aspergillus niger

Following numerous biotechnological innovations, a variety of agricultural by-products can now be employed as low-cost substrates for the production secondary metabolites, such antibiotics, phytohormones, biofuels, pesticides, and organic acids. As an example, gibberellin (GA) growth phytohormones obtained by means, wherein gibberellic acid (GA3) is great interest worldwide in sector. The central aspect this research therefore focused on bioconversion by-products, corn cob, to obtain GA3 phytohormone via solid-state fermentation (SSF) with Aspergillus niger. chemical characterization material showed that cob possessed glucose, mannose, arabinose, lignin contents 34, 26, 8, 16%, respectively. Our results also indicated appreciable carbon content (47%), addition mineral elements nitrogen (4%), potassium (1.2%), iron (0.03%), sodium (0.01%), calcium (0.06%), Al (0.02%). SSF 11 d presence A. niger at pH 5, 30°C, 24% sample consistency, >6.1 g·kg−1 was obtained. This value higher than those previously reported different food industry, coffee husk, wheat bran, cassava, pea pods, sorghum straw (i.e., 0.25–5.5 g·kg−1) following SSF. from residues not only contributes reducing negative impact but represents new source key raw production, thereby contributing development processes convert into biologically active compounds commercial interest.