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Energies, Vol. 11, Pages 639: Comparison and Optimization of Saccharification Conditions of Alkaline Pre-Treated Triticale Straw for Acid and Enzymatic Hydrolysis Followed by Ethanol Fermentation

Energies, Vol. 11, Pages 639: Comparison and Optimization of Saccharification Conditions of Alkaline Pre-Treated Triticale Straw for Acid and Enzymatic Hydrolysis Followed by Ethanol Fermentation

Energies doi: 10.3390/en11030639

Authors: Rafał Łukajtis Karolina Kucharska Iwona Hołowacz Piotr Rybarczyk Katarzyna Wychodnik Edyta Słupek Paulina Nowak Marian Kamiński

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.

Autoren:   Łukajtis, Rafał ; Kucharska, Karolina ; Hołowacz, Iwona ; Rybarczyk, Piotr ; Wychodnik, Katarzyna ; Słupek, Edyta ; Nowak, Paulina ; Kamiński, Marian
Journal:   Energies
Band:   11
Ausgabe:   3
Jahrgang:   2018
Seiten:   639
DOI:   10.3390/en11030639
Erscheinungsdatum:   13.03.2018
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