Satria, Heri and Yandri, Yandri and Nurhasanah, Nurhasanah and Herasari, Dian and Aspita, Laila and Suripto, Suripto (2020) Simultaneous Bioconversion of Rice Straw into Intermediate Product using Ionic Liquid and Native Extracellular Hydrolytic Enzyme from Indigenous Actinomycetes. In: ICASMI 2020, 3 September 2020, Bandar Lampung. (Unpublished)


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Abstract. Bioethanol production technology using lignocellulosic substrates has become a focus to overcome the limited supply of fossil fuels in the current century. Simultaneous saccharification require to understand of suitable efficient procedures in bioconversion row material into fermented sugar. In this study, effect of pretreated rice straws using ionic liquid on enzymatic saccharification by isolated actinomycetes were investigated. Ionic liquid to rice straw in ratio (IL/RS) were set up 0 to 3 (g/g), and remaining of the ionic liquids in pretreated biomass was examined for its effect on the hydrolytic enzyme activity of the actinomycetes. Three of actinomycetes were isolated from decomposed rice straw and were purified and screened for their cellulolytic and xylanolytic activity; one strain, namely Act-4rs, was selected as an optimum isolate for the further hydrolysis examination. Both of cellulase and xylanase activity exhibit a peak at a ratio IL/RS of 1 (g/g), the activity was 58.43 and 66.16 U/ml respectively. The highest yield of sugar also achieved at this IL/RS ratio for 8 days incubation. The pretreatment indicate that it could promote an increase in the yield sugar up to 1.9 times. This study was promising to develop a one-pot conversion of lignocellulosic biomass into bioethanol using the biological process.

Item Type: Conference or Workshop Item (Speech)
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User: Dr. Eng. Heri Satria
Date Deposited: 05 Nov 2020 01:12
Last Modified: 05 Nov 2020 01:12

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