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Journal : HAYATI Journal of Biosciences

Screening and Molecular Identification of Endophytic Bacteria from Calamus caesius Blume with Potential as Antioxidant and α-Glucosidase Inhibitors Ginting, Chrismis Novalinda; Lister, Nyoman Ehrich; Girsang, Ermi; Fachrial, Edy
HAYATI Journal of Biosciences Vol. 32 No. 3 (2025): May 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.3.599-610

Abstract

Calamus caesius, traditionally used in Asian medicine for managing diabetes mellitus, is a promising source of endophytic bacteria due to its bioactive potential. This study aims to identify the potential of endophytic bacteria isolated from “Pakkat” (Calamus caesius Blume), a traditional food of North Sumatra, as a source of α-glucosidase inhibitors. These inhibitors, such as acarbose, are used to manage type 2 diabetes mellitus but have significant gastrointestinal side effects. This study focuses on isolating and characterizing endophytic bacteria that can produce natural inhibitors, potentially safer alternatives. Twenty endophytic bacterial isolates were successfully isolated, of which five were excluded due to hemolytic activity. Antioxidant activity was determined using the DPPH method, and isolates with the highest activity proceeded to α-glucosidase inhibitor testing. Molecular identification of potential isolates was performed through 16S rRNA gene amplification, and genomic DNA sequencing utilized the Oxford Nanopore Technologies platform. Secondary metabolite analysis was performed using antiSMASH, and gene cluster comparison with CAGECAT. Of 15 isolates, LTUP1.3 (Bacillus cereus) exhibited 86.6% α-glucosidase inhibitor activity, close to the positive control (88%). Although in Bacillus cereus LTUP1.3 no secondary metabolites were found that act as α-glucosidase inhibitors, three enzymes have similarities with enzymes found in Actinoplanes that play a role in acarbose biosynthesis namely dTDP-glucose 4,6-dehydratase RffG, glucose-1-phosphate thymidylyltransferase rmIA and glucose-1-phosphate adenylyltransferase glgC. These results suggest that Bacillus cereus strain LTUP1.3 has a potential biosynthetic pathway similar to the acarbose biosynthetic pathway in Actinoplanes. However, further confirmation is required to establish its overall acarbose production capability.
Co-Authors Abednego S. Karosekali Adek Amansyah Afif P Jati Ainy, Al-Annisa Fadhila Aisar Novita Alhoi Hendry Henderson Aloysius Aloysius Aloysius, Aloysius Angelin Christin Anggita Kasih Fianti Situmorang Anggraini, Sari Anjurniza Ulfa Annisa Amalia Ariatama, Bayu Armansyah, Adek Balkis, Tiara Bayu Pratomo Bayu Pratomo Bella Sari Sijabat Buter Samin Buter Samin Calvin Christian Karo Karo Chiuman, Linda Chrismis Novalinda Ginting Christine Halawa Citra, Arma Clarissa Lister DAMERIA DAMERIA Davin, Radhitya Qowiyyul Dea Christa Amanda Deborah Angelin Purba Delyuzar, Delyuzar Dini Ariyska Edward Kosasih Edwin Waroka Ehrich Lister, I Nyoman Eka Susilawati Erika Yolanda Ginting Ermi Girsang Ester Putri Mentary Mendrofa Felix Felix Ferdinand, Sahna Fibrina, Dewi Finna Piska Fioni, Fioni Ginting, Chrismis Novalinda Ginting, Sahna Ferdinand Girsang, Ermi Girsang, Ermi Gusbakti Rusip Hakim Nasution, Ikhwanul Hanna Christsela Purba Hanna Sari Widya Kusuma, Hanna Sari Widya Harmileni Harta Winata, Jaya Henderson, Alhoi Hendry Henny Safrita Ginting I Nyoman Ehrich Lister I Nyoman Ehrich Lister I Nyoman Ehrich Lister I Nyoman Ehrich Lister I Nyoman Ehrich Lister I Nyoman Ehrich Lister I Nyoman Ehrich Lister Indra Setiawan Rambe Intan Hasibuan, Febria Nurul Intisari, Yayo Ira Manda Sari Berampu Ismawati Ismawati Ismawati Juli elisabeth mayen Juli Elisabeth Mayen Meliala Jusri, Ridza Karo Sekali, Abednego Suranta Khainir Akbar, Khainir Komala, William Laura J. Pinem Liana Liana Liena Liena Lina, Juliana Linda Chiuman Lisma Viany Lister Ehrich I Nyoman Lister, Clarissa Lister, I Nyoman Ehrich Lister, I Nyoman Ehrich Lister, I Nyoman Ehrich Lister, I Nyoman Enrich Lister, I. Nyoman Ehrich Lister, Nyoman Ehrich Lokot Donna Lubis M. Andriady Saidi Nst Mahani, Yensielia Marbun, Togi Rut Marlita Marpaung, Hans Hotma Masdalena Nasution Muhammad Aditya Kurnia Nabila, Pivi Naidu, Ramawathy Nasution, Muhammad Hasan Basri Natalia Desvalentina Lase Neswita, Elfia Niranti, Tasya Putri Novriani, Erida Nyoman Ehrich Lister, I Obet Edom Ginting Ongko, Nicolas Xavier Pinem, Laura Juita Pranita Simanjuntak, Nerly Juli Purba, Greace Hasianna Purba, Rosi Krisdayanti Qodariah, Rismawati Laila Rama Riana Sitinjak Ramadhani, Shafira Ricky Kinarta Sembiring Rika Silvany Rita Kusuma Ritonga, Lestina Rizal Rizal Rizal Rizal Rr. Anisa Siwianti Handayani Rudi Chandra Saipul Sihotang Saragih, Ria Natalia Saragih, Runitasari Sari Anggraini Saryono Saryono Saryono Siahaan, Cory Oriensia Sianturi, Naomi Silaban, Agnes Novica Putri Silalahi, Elsa Debora Simamora, Yohana Sinaga, Ade Putra Fratama Sinaga, Theresia Margaretha Siregar, Hafiz Hawari Siregar, Irma Dolsyeria Situmorang, Anggita Kasih Fianti Sofiyana, Maria Sonya Bonifacia Mahadi Sormin, Delores Elisabeth Sumartin, Sonia Apriani Sunarti Sunarti Surya Dharma Syahputra, Hariyadi Dharmawan Tandiah Asan Tarigan, Lela Diyana Br Tarigan, Nuzulul Akbar Tengku Muhammad Sahiril Anhar Tengku Rachmi Hidayani Titania T Nugroho Titania Tjandrawati Nugroho Tri Widyawati Ulfa, Anjurniza Urip Harahap Vebbly, Vebbly Vicky Vrianty, Dela Wahyu Widowati WAHYU WIDOWATI Wahyu Widowati Waroka, Edward Widodo, Wahyu Setia Widya Yanti Sihotang Wienaldi, Wienaldi Wijaya, Raysha Awlia Wilsen Wilsen Yasmin, Nabila Yonias Saleh Tria Zebua Yuliani Mardiati Lubis Yunita Dewani