Production of Hemicellulose Sugars Combined with the Alkaline Extraction Lignin Increased the Hydro-Depolymerization of Cellulose from Corn Cob

Hydro-depolymerization is a novel method for converting agricultural waste into eco-friendly and promising products. Due to the complex structure composition of corn cob (CC), three-step process was developed, which involved pre-hydro-depolymerization hemicellulose, alkaline extraction lignin, hydro-depolymerization cellulose. The step at first optimized produce five-carbon six-carbon sugars, achieving maximum hemicellulose conversion rate 78.48 ± 3.92%, reducing sugar yield 59.12 2.95%. Alkaline treatment achieved lignin efficiency 73.76 3.68%. After removal delignification, cellulose increased 36.63% further 76.97% after five cycles. Scanning electron microscopy (SEM) Fourier transform infrared spectroscopy (FTIR) were performed confirm physical chemical changes in CC residues. integrated enables complete exploitation cellulose, thus holds great potential application agriculture industry.