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Khaswar Syamsu
Department Of Agricultural Industrial Technology - Bogor Agricultural University Dramaga, Bogor, 16680
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Fiber Disruption of Betung Bamboo (Dendrocalamus asper) by Combined Fungal and Microwave Pretreatment Fatriasari, Widya; Syafii, Wasrin; Wistara, Nyoman; Syamsu, Khaswar; Prasetya, Bambang; Anita, S Heris; Risanto, Lucky
BIOTROPIA Vol. 22 No. 2 (2015): BIOTROPIA Vol. 22 No. 2 December 2015
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1200.375 KB) | DOI: 10.11598/btb.2015.22.2.363

Abstract

Combined microwave pretreatment is an effective method to modify carbohydrate and lignin structures of fungal and lignocellulosic materials, thereby improving the hydrolysis process for bioethanol conversion. This study aimed to evaluate the structural changes in carbohydrate and lignin components of betung bamboo following a combined biological–microwave pretreatment. Based on previous findings, a 30-day incubation using 5% and 10% (w/v) inoculum loading of the white-rot fungus Trametes versicolor—which showed the highest delignification selectivity—was selected as the fungal pretreatment. Microwave irradiation was then applied for 5, 10, and 12.5 minutes at 330 W. Characterization of structural changes was conducted using FTIR spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). FTIR analysis revealed that the combined pretreatment affected only the intensity of absorption bands without altering the functional groups. A decline in peak intensity occurred at 1,736 cm⁻¹ (C=O in xylan), 1,373 cm⁻¹ (C–H deformation in cellulose and hemicellulose), 1,165 cm⁻¹ (C–O–C vibration in cellulose and hemicellulose), and 895 cm⁻¹ (β-glycosidic linkage in cellulose). The pretreatment reduced hydrogen bonding in cellulose and weakened lignin–carbohydrate linkages associated with bamboo cellulose crystallinity. A slight increase in crystallinity index was observed due to cleavage of the amorphous fraction. SEM imaging confirmed the disruption of fiber structure, showing increasing degradation with longer microwave exposure durations.
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 Herastuti Sri I Nyoman Jaya Wistara Iftachul Farida Ika Amalia Kartika Ike Sitoresmi M Purbowati Illah Sailah Irawadi Jamaran 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 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 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