Production of Fermentable Sugars from Wheat Straw by Formic Acid Pretreatment

Abstract:

Emerging biorefinery technologies offer a sustainable alternative through the utilisation of carbohydrates to reduce our reliance on fossil fuels. Cellulose molecules consist of long chains of glucose molecules as do starch molecules, but have a differentstructural configuration. These structural characteristics plus the encapsulation by lignin makes cellulosic materials more difficult to hydrolyze than starchy materials. In recent years, treatment of lignocellulosic biomass with dilute acid has been primarily used as a means of hemicellulose hydrolysis and pretreatment for enzymatic hydrolysis of cellulose and a significant advancement has also been found by adding hydrochloric acid with catalyst dosage in saturated formic acid. In the present work, the hydrochloric acid concentration, temperature, the ratio of solid to liquid and reaction time were prepared for the fermentable sugars production. The obtained optimum conditions were: adding 4% hydrochloric acid in saturated formic acid solution, temperature of 105 °C, with a reaction time of 90 min, and the maximum glucose and reducing sugars production were 26.84 g/L% and 27.4%, respectively.

• Periodical: Advanced Materials Research (Volumes 550-553)
• Pages: 1258-1261
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.550-553.1258
• Online since: July 2012
• Authors: Jun Ping Zhuang, Xue Ping Li, Ying Liu
• Keywords: Fermentable Sugars, Formic Acid, Wheat Straw

References

[1] Sigrid E J, Charles E. Cellulose and Hemicellulose Hydrolysis Models for Application to Current and Novel Pretreatment Processes. In: Applied Biochemistry and Biotechnology pp.84-86. Humana Press Inc.

DOI: 10.1385/abab:84-86:1-9:81

[2] Saha B C, Iten L B, Cotta MA, Wu YV. Process Biochemistry, vol. 40 (2005) pp.3693-3700

[3] J P Zhuang, L Lin, J Liu, X L Luo, C S Pang. Preparation of xylose and kraft pulp from poplar based on formic/acetic acid/water system hydrolysis. BioResources, Vol 4(2009), pp.1147-1157

DOI: 10.15376/biores.4.3.1147-1157

[4] Bjerre AB, Olesen AB, Fernqvist T, Plöger A, Schmidt AS. Biotechnology and Bioengineering, Vol 49 (1996) pp.568-577

[5] Ruofei Hua,, Lu Lin, Tingjun Liua, and Shijie Liu. Bioresource Technology, Vol 101, (2010), pp.3586-3594

[6] Thomsen, M. H., A. Thygesen, and A. B. Thomsen. Bioresour. Technol. Vol 99, (2008), pp.4221-4228.