Efficient extraction of xylan from delignified corn stover using dimethyl sulfoxide

Area of Science:

• Biomass valorization
• Carbohydrate chemistry
• Green chemistry

Background:

• Xylan, a key component of plant biomass, is challenging to extract efficiently.
• Dimethyl sulfoxide (DMSO) extraction yields water-soluble xylan, unlike alkali methods (KOH, NaOH).
• Optimizing DMSO extraction conditions is crucial for industrial applications.

Purpose of the Study:

• To investigate the effect of temperature on DMSO extraction of xylan from corn stover.
• To identify conditions for faster and more efficient xylan extraction.
• To assess structural integrity of xylan extracted at elevated temperatures.

Main Methods:

• Corn stover was subjected to DMSO extraction at various temperatures.
• Extraction time and yield were recorded.
• Basic structural analysis was performed on extracted xylan.

Main Results:

• Heating to 70°C during DMSO extraction yielded comparable results to room temperature extraction.
• Extraction time was reduced by approximately 90% at 70°C.
• Structural analysis confirmed that xylan retained key characteristics after heated extraction.

Conclusions:

• Elevated temperature (70°C) significantly enhances the efficiency of DMSO xylan extraction from corn stover.
• This heated method provides a faster, high-yield, and structurally sound alternative for xylan recovery.
• The optimized process maintains the water-solubility and structural integrity of xylan.