Effects of soaking aqueous ammonia pretreatment on chemical composition and enzymatic hydrolysis of corn stover

• Autorzy: Akus-Szylberg Florentyna , Antczak Andrzej , Zawadzki Janusz

Identyfikatory

DOI

10.5604/01.3001.0015.3633

• Języki publikacji: EN

Abstrakty

EN

Effects of soaking aqueous ammonia pretreatment on chemical composition and enzymatic hydrolysis of corn stover. The aim of this research was to investigate the effect of applying two different temperatures of the soaking aqueous ammonia treatment on the chemical composition and enzymatic hydrolysis yield of the corn stover. Native corn stover as well as solid fractions after 20 h of alkali pretreatment performed at 15% ammonia solution and at 50 °C or 90 °C were analysed in terms of cellulose, holocellulose, lignin and extractives content. Both untreated and treated samples were subjected to the enzymatic hydrolysis and hydrolysates were examined with a high performance liquid chromatography (HPLC). Results indicated a significant development of enzymatic digestibility of the SAA treated biomass. Furthermore, a 38.7% and a 68.9% delignification levels in the biomass treated with ammonia at respectively 50 °C and 90 °C process comparing to the raw material were achieved.

PL

Wpływ wstępnej obróbki słomy kukurydzianej w wodnym roztworze amoniaku (SAA) na jej skład chemiczny i hydrolizę enzymatyczną. Celem badań było zbadanie wpływu zastosowania dwóch rożnych temperatur podczas obróbki wstępnej wodnym roztworem amoniaku słomy kukurydzianej na jej skład chemiczny oraz wydajność hydrolizy enzymatycznej. Próbki słomy natywnej, jak i słomy po 20 godzinach obróbki w 15% roztworze amoniaku i temperaturze 50 °C lub 90 °C zostały przebadane pod kątem zawartości celulozy, hemiceluloz, ligniny i substancji ekstrakcyjnych. Zarówno materiał natywny, jak i po obróbce został podany również hydrolizie enzymatycznej, a hydrolizaty zostały przebadane przy pomocy wysokosprawnej chromatografii cieczowej (HPLC). Uzyskane wyniki pozwoliły stwierdzić wysoce zwiększoną zawartość cukrów w hydrolizatach biomasy po obróbce SAA. Ponadto, osiągnięto 38.7% oraz 68.9% poziom delignifikacji odpowiednio po procedurze SAA przeprowadzonej w 50 °C i 90 °C.

Słowa kluczowe

EN

soaking aqueous ammonia; chemical composition; enzymatic hydrolysis; corn stover; bioethanol

• Wydawca: Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
• Czasopismo: Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
• Rocznik: 2021
• Tom: No. 115
• Strony: 29--36
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Akus-Szylberg Florentyna

• Department of Wood Science and Wood Protection, Institute of Wood Sciences and Furniture Warsaw University of Life Sciences (SGGW)

autor

Antczak Andrzej

• Department of Wood Science and Wood Protection, Institute of Wood Sciences and Furniture Warsaw University of Life Sciences (SGGW)

autor

Zawadzki Janusz

• Department of Wood Science and Wood Protection, Institute of Wood Sciences and Furniture Warsaw University of Life Sciences (SGGW)

Bibliografia

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