BREAKDOWN OF GLUCOMANNAN ISOLATED FROM AMORPHOPHALLUS MUELLERI: OPTIMIZATION OF ENZYMATIC HYDROLYSIS CONDITIONS

Authors

  • Mr. Muhammad Imran Ishak Universiti Teknologi Malaysia
  • Prof. Ir. Ts. Dr. Roshanida A. Rahman Faculty of Chemical and Energy Engineering, UTM Skudai, Johor
  • Dr. Mohammad Nashriq Jailani Universiti Teknologi Malaysia
  • Dr. Nur Aizura Mat Alewi Universiti Teknologi Malaysia https://orcid.org/0009-0003-5349-135X
  • Prof. Dr. Rosli Md Illias Universiti Teknologi Malaysia
  • Dr. Nardiah Rizwana Jaafar Universiti Teknologi Malaysia
  • Prof. Dr. Kazuhito Fujiyama The University of Osaka
  • Prof. Dr. Ni Nyoman Tri Puspaningsih Universitas Airlangga
  • Mr. Mohd Faizal Ahmad Jaafar Ladang Konjak Sdn Bhd
  • Mrs. Azura Aziz Ladang Konjak Sdn Bhd

DOI:

https://doi.org/10.11113/jurnalteknologi.v88.25608

Abstract

This study investigated the hydrolysis of glucomannan from Amorphophallus muelleri using β-mannanase under various reaction conditions, such as reaction time, pH, temperature and enzyme substrate (E/S) ratio. Response Surface Methodology (RSM) was utilized to identify optimal parameters for maximizing total reducing sugar (TRS) production. The results indicated that the E/S ratio, pH, and reaction time significantly affected hydrolysis efficiency (p < 0.05), while temperature had an insignificant impact (p > 0.05). The ideal conditions were determined to be an E/S ratio of 1:500 (v/v), pH 5.73, 41.5 °C, and 5 h, resulting in a TRS yield of 4.409 ± 0.030 mg/mL, with a difference of merely 1.46% from the expected values. This study demonstrates the viability of A. muelleri as a sustainable resource for oligosaccharides production and confirms that enzymatic hydrolysis coupled with RSM is an effective approach for process optimization.

Author Biographies

  • Mr. Muhammad Imran Ishak, Universiti Teknologi Malaysia

    Masters Student

    Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 84600 Pagoh, Johor, Malaysia

  • Dr. Mohammad Nashriq Jailani, Universiti Teknologi Malaysia

    Postdoctoral Fellow

    Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 84600 Pagoh, Johor, Malaysia

  • Dr. Nur Aizura Mat Alewi, Universiti Teknologi Malaysia

    Postdoctoral Fellow

    Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 84600 Pagoh, Johor, Malaysia

  • Prof. Dr. Rosli Md Illias, Universiti Teknologi Malaysia

    Professor

    Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 84600 Pagoh, Johor, Malaysia

    Innovation Centre in Agritechnology for Advanced Bioprocessing, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

  • Dr. Nardiah Rizwana Jaafar, Universiti Teknologi Malaysia

    Lecturer

    Department of Bioprocess and Polymer Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 84600 Pagoh, Johor, Malaysia

  • Prof. Dr. Kazuhito Fujiyama, The University of Osaka

    Professor

    International Center for Biotechnology, The University of Osaka, 2-1 Yamadaoka, Suita 565-0871, Osaka, Japan

  • Prof. Dr. Ni Nyoman Tri Puspaningsih, Universitas Airlangga

    Professor

    Faculty of Science and Technology, Universitas Airlangga, Surabaya, 60115 East Java, Indonesia

  • Mr. Mohd Faizal Ahmad Jaafar, Ladang Konjak Sdn Bhd

    Chief Executive Officer (CEO)

    Ladang Konjak Sdn Bhd, 1-28-10, M-City, 326, Jalan Ampang, 50450 Kuala Lumpur, Malaysia

  • Mrs. Azura Aziz, Ladang Konjak Sdn Bhd

    Director

    Ladang Konjak Sdn Bhd, 1-28-10, M-City, 326, Jalan Ampang, 50450 Kuala Lumpur, Malaysia

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Published

2026-04-30

Issue

Section

Science and Engineering