Publications Repository - Gdańsk University of Technology

This paper concerns the comparison of the efficiency of two-stage hydrolysis processes, i.e., alkaline pre-treatment and acid hydrolysis, as well as alkaline pre-treatment followed by enzymatic hydrolysis, carried out in order to obtain reducing sugars from triticale straw. For each of the analyzed systems, the optimization of the processing conditions was carried out with respect to the glucose yield. For the alkaline pre-treatment, an optimal catalyst concentration was selected for constant values of temperature and pre-treatment time. For enzymatic hydrolysis, optimal process time and concentration of the enzyme preparation were determined. For the acidic hydrolysis, performed with 85% phosphoric acid, the optimum temperature and hydrolysis time were determined. In the hydrolysates obtained after the two-stage treatment, the concentration of reducing sugars was determined using HPLC. The obtained hydrolysates were subjected to ethanol fermentation. The concentrations of fermentation inhibitors are given and their effects on the alcoholic fermentation efficiency are discussed.

Authors

• dr Rafał Łukajtis link open in new tab ,
• dr inż. Karolina Kucharska link open in new tab ,
• dr inż. Iwona Hołowacz link open in new tab ,
• dr inż. Piotr Rybarczyk link open in new tab ,
• mgr Katarzyna Wychodnik link open in new tab ,
• dr inż. Edyta Słupek link open in new tab ,
• dr inż. Paulina Nowak link open in new tab ,
• prof. dr hab. inż. Marian Antoni Kamiński link open in new tab