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Hari Eko Irianto
Balai Besar Penelitian Dan Pengembangan Pengolahan Produk Dan Bioteknologi Kelautan Dan Perikanan, Jl. KS. Tubun, Petamburan VI, Slipi, Jakarta
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Journal : Science and Technology Indonesia

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Isolation and Characterization of Cellulose Microfibril (MFC) from Gracilaria sp. with Different Quality Grades Nurhayati; Irianto, Hari Eko; Supriyanto, Agus; Kusumawati, Rinta; Basmal, Jamal; Munifah, Ifah; Setiawati, Natalia Prodiana; Kusumaningrum, Wida Banar; Amanda, Putri; Roziafanto, Ahmad Nandang; Riastuti, Rini; Chalid, Muchamad
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.712-724

Abstract

The cellulose found in Gracilaria sp. has not been utilized optimally. This study investigated the characteristics of cellulose and cellulose microfibril (MFC) isolated from three grades of Gracilaria sp. Descriptive tests were performed to determine the quality of eachgrade, including observations on moisture content, ashcontent, CAW,andimpurities. The extraction process involved separating agar from Gracilaria sp., isolating cellulose using 10% NaOH, and bleaching cellulose with 3% NaOCl. The bleached cellulose was then ultrasonicated to produce MFC. Characterization was performed using FTIR, XRD, PSA, STA, DSC, and py-GC/MS. FTIR analysis indicated similar peaks for both cellulose forms but only differed in transmittance intensity. The crystallinity index from XRD analysis was 22–39% for raw Gracilaria sp., 25–46% for cellulose, and 68–89% for MFC. The particle size distribution of MFC mostly ranged between 200–500 nm, with 63.16% frequency. TG analysis showed cellulose decomposition with a Tonset of 231–260oC and a Tmax of 318–326oC. DSC analysis revealed that sonication enhances the polymer structure’s crystallization compared to pre-sonicated cellulose and raw material. The py-GC/MS analysis showed that D-allose and n-Hexadecanoic acid were the major components.
Co-Authors Achmad Poernomo Agus Supriyanto Agusman Agusman Agusman, Agusman Akbar Hanif Dawam Abdullah Ali Suman Alifah, Reza Nur Amanda, Putri Anja Meryandini Ausias, Gilles Azizah Intan Pangesty Batubara, Siti Chairiyah Chalid, Muchamad Dedi Fardiaz Dedi Supriadi Dewi Seswita Zilda Diah Lestari Ayudiarti Dian Dwi Putri Diana Natalia Dina Fransiska Djagal Wiseso Marseno Djagal Wiseso Marseno Dwiyitno Dwiyitno El-Ghifary, Muhammad Ghufron Ema Hastarini Eni Harmayani Erislan, Erislan farida ariyani Fayakun Satria Fransiska, Dina Gintung Patantis Gintung Patantis Hanifah Nuryani Lioe Hastiana, Sabina Ifah Munifah Ifah Munifah Ijah Muljanah Ikasari, Diah Indrati, Retno JAKA WIDADA Jamal Basmal, Jamal Jan Schwarzbauer Khairul Amri Kusumaningrum, Wida Banar Laksono Trisnantoro Larissa Dsikowitzky Lumanauw, Jimmy M. Syamsul Maarif Marimin , Mochamad Chalid Muljanah, Ijah Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nuri Andarwulan Nurul Hak Panji Priambudi Poetri, Tika Annisa Eka Putri Putih Puspa Asri Rachmana, Alfitra Raya Rifki Prayoga Aditia Rini Riastuti, Rini Rinta Kusumawati, Rinta Rizal Syarief Rodiah Nurbaya Sari Rossy Choerun Nissa Roziafanto, Ahmad Nandang Sakinah Haryati Salampessy, Randi Bokhy Syuliana Sidartha, B. Boy Rahardjo Siti Zahro Nurbani Slamet Budhijanto Sri Marliah Suah, Faiz Bukhari Mohd Subaryono Subaryono, Subaryono Sugiarto S Sukarno Sukarno Suryaningrum, Theresia Dwi Suryanti Suryanti Suryanti Suryanti Suryanti Suryanti Suryanti Syamsiar, Syamsiar Tazwir Tazwir Titi Candra Sunarti Tri Wulandari Widya Asmara Yusro Nuri Fawzya Yusro Nuri Fawzya Zilda, Dewi Zeswita