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Journal : International Journal of Renewable Energy Development

The characteristic changes of betung bamboo (Dendrocalamus asper) pretreated by fungal pretreatment Fatriasari, Widya; Syafii, Wasrin; J Wistara, Nyoman; Syamsu, Khaswar; Prasetya, Bambang
International Journal of Renewable Energy Development Vol 3, No 2 (2014): July 2014
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.2.133-143

Abstract

The fungal pretreatment effect on chemical structural and morphological changes of Betung Bamboo was evaluated based on its biomass components after being cultivated by white rot fungi, Trametes versicolor. Betung bamboo powder (15 g) was exposed to liquid inoculum of white rot fungi and incubated at 270C for 15, 30 and 45 days. The treated samples were then characterized by FT-IR spectroscopy, X-Ray diffraction and SEM-EDS analyses. Cultivation for 30 days with 5 and 10% loadings retained greater selectivity compared to that of the other treatments. FTIR spectra demonstrated that the fungus affected the decreasing of functional group quantities without changing the functional groups. The decrease in intensity at wave number of 1246 cm-1 (guaiacyl of lignin) was greater than that at wave number of 1328 cm-1 (deformation combination of syringyl and xylan) after fungal treatment. X-ray analysis showed the pretreated samples had a higher crystallinity than the untreated ones which might be due to the cleavage of amorphous fractions of cellulose. The pretreated samples have more fragile than the untreated ones confirmed by SEM. Crystalline allomorph calculated by XRD analysis showed that fungus pretreatment for 30 days has transformed triclinic structure of cellulose to monoclinic structure.
Direct Ethanol Production from Breadfruit Starch (Artocarpus communis Forst.) by Engineered Simultaneous Saccharification and Fermentation (ESSF) using Microbes Consortium Farida, Iftachul; Syamsu, Khaswar; Rahayuningsih, Mulyorini
International Journal of Renewable Energy Development Vol 4, No 1 (2015): February 2015
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.4.1.25-31

Abstract

Breadfruit (Artocarpus communis Forst.) is one of sources for ethanol production, which has high starch content (89%). Ethanol production from breadfruit starch was conducted by Simultaneous Saccharification and Fermentation (SSF) technology using microbes consortium. The aim of the research was to examine a method to produce ethanol by SSF technology using microbes consortium at high yield and efficiency. The main research consisted of two treatments, namely normal SSF and enginereed SSF. The results showed that normal SSF using aeration and agitation during cultivation could produce ethanol at 11.15 ± 0.18 g/L, with the yield of product (Yp/s) 0.34 g ethanol/g substrate; and yield of biomass (Yx/s) 0.29 g cell/g substrate, respectively. A better result was obtained using engineered SSF in which aeration was stopped after biomass condition has reached the end of the exponential phase. The ethanol produced was 12.75 ± 0.04 g/L, with the yields of product (Yp/s) 0.41 g ethanol/g substrate, and the yield of cell (Yx/s) 0.09 g cell/g substrate.
Co-Authors . Gunawan . Gunawan A. Aziz Darwis A. Herryandie Abdul Aziz Darwis Adhi Kusnadi Akhmad Endang Zainal Hasan Anas Miftah Fauzi Anggun Rahman Rahman Ani Suryani Ani Suryani Aninda Sekar ZAHRA Anwar Nur Anwar Nur Ardani Lukman ASEP RISWOKO ASTUTIATI NURHASANAH Bambang Prasetya Bambang Prasetya Bambang Prasetya Bambang Prasetya Bustomi - Bustomi Darwis, Abdul Aziz Dede Rais Diana Dewi Diana Dewi, Diana Diana Nurani Djumali Mangunwidjaja Djumali Mangunwidjaja Djumali Mangunwidjaja Dwi - Susilaningsih Dwi Purnomo Dwi Purnomo Dwi Setyaningsih DYAH NOOR HIDAYATI Dyah Noor Hidayati E. Gumbira Sa’id E. Gumbira-Sa’id E. Mardliyati Elisa Julianti Endang Gumbira Said Endang Warsiki Endang Warsiki dan Citra Dewi Wahyono Putri (E-Jurnal Agro-Industri Indonesia) Eni Dwi Islamiati Eni Dwi Islamiati Eni Dwi Islamiati, Eni Dwi Erwahyuni E Prabandani ERWAHYUNI ENDANG PRABANDARI ERWAHYUNI ENDANG PRABANDARI Erwahyuni Prabandari Erwahyuni Prabandari, Erwahyuni Essa Annisa Syadiah Etik Mardliyati Etik Mardliyati Etik Mardliyati, Etik Etty Riani FARAH FAHMA FENTRI PARAMITHA PUTRI Fitriani Kasim Gamma Irca Pradikta Griselda Happy Ramadhani Gumbira-Sa'id, E Gustri Yeni Gustri Yeni Han Roliadi Hanifah FUADI Hanny Hafiar Hendri Muchtar Hendri Muchtar, Hendri Hendri Ropingi Herastuti Sri I Nyoman Jaya Wistara Iftachul Farida Ika Amalia Kartika Ike Sitoresmi M Purbowati Illah Sailah Irawadi Jamaran Irvan Setiadi Kartawiria Irvan Setiadi Kartawiria IS HELIANTI Isroi Isroi Isroi Jayawarsa, A.A. Ketut Joko Santoso Kasid, Sri Kaidah kusnadi, adhi Lanjar Sumarno Lanjar Sumarno Lestari, Puji Liesbetini Haditjaroko Liesbetini Hartoto Lucky Risanto M Irfani ABDULLAH M. ANWAR NUR M. Daud Machfud Mala Nurilmala Manalu, Lamhot Mardliyati, Etik Muhammad Arif Darmawan Muhammad Daud Muhammad Rasyid RAMADHAN Muhammad Tasrif Muhammad Tasrif Mulyorini Rahayuningsih Murdiyatmo, Untung Muslich Muslich, Muslich N. A. Evalia Nabilah, Siti Nadia STEPANI Nastiti Siswi Indrasti Nasution, Nurul Cinthiya nFN Misgiyarta NIKNIK NURHAYATI Ninik Purbosari Nur Atifah Nur Richana Nurika Asih SETIYANI Nusaibah - Nusaibah Prayoga SURYADARMA Ridwansyah Ridwansyah Rini Purnawati Rofiq Sunaryanto Rofiq Sunaryanto S Heris Anita, S Heris S Joni Munarso Sa’id, E. Gumbira Sapta Raharja Sarifah Nurjanah Selvia Mahilda RIDHOHA Shinta PERMATASARI Siti Nabilah Sony Hartono Wijaya Sudirman Sudirman Suharyanto Suprihatin Suprihatin Surono SURONO Tajuddin Bantacut Taufik Hidayat Titi Candra Sunarti Tri Panji Tun T. Irawadi Tun Tedja Irawadi Tun Tedja Irawadi Wahono Sumaryono Wasrin Safii Wasrin Syafii Widya Fatriasari Widya FATRIASARI Yandra Arkeman Yandra Arkeman Yandra Arkenan Yeni, Gustri Yeni, Gustri