Corncobs contain approximately 39.1% cellulose, 42.1% hemicellulose, 9.1% lignin, 1.7% protein,
and 1.2% ash. Due to their chemical composition, corn residues show great potential as a renewable raw material for producing a variety of added-value chemicals, such as lactic acid, citric
acid, sugars, and ethanol [3–6]. On the other hand, the secondary metabolites and constituents of
corncobs remain unclear. Development of an efficient way to utilize corncobs will require additional
research into the chemical nature of this environmental agro-waste and its potential application to the
production of valuable chemicals and pharmaceuticals.