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Journal : Biotropika

Exploration of Copper and Lead Resistant Bacteria from Sediments of Kali Baru Estuary Purnomo, Eko; Kusumaningrum, Hermin Pancasakti; Budiharjo, Anto; Lunggani, Arina Tri; Az-Zahra, Salwa Zubaidah; Wardaja, Bodhicitta; Maimunah, Siti; Dinalhaq, Putri Cahya
Biotropika: Journal of Tropical Biology Vol. 14 No. 1 (2026)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.biotropika.2026.014.01.05

Abstract

Heavy metal contamination, particularly by copper (Cu) and lead (Pb), in aquatic ecosystems poses a significant threat to ecological balance, aquatic organisms, microbial diversity and human health. The Kali Baru Estuary in Semarang, Indonesia, has been reported as a heavily polluted area with Cu and Pb concentrations far exceeding environmental safety thresholds, highlighting the urgent need for sustainable remediation strategies. This study aimed to isolate and characterise bacterial strains resistant to Cu and Pb from sediment samples collected from the Kali Baru Estuary in Semarang as potential bioremediation agents. Bacterial isolation was performed using a serial dilution technique up to 10?², in triplicate, spread onto Marine Agar medium, and incubated at 37°C for 24 h. The obtained isolates were purified and characterised based on their macroscopic and microscopic morphological features. Resistance profiling of the isolates was assessed by exposing them to Cu and Pb at concentrations of 100, 200, and 300 mg/L. A total of 32 bacterial isolates were successfully obtained. Among these, two isolates demonstrated resistance to Cu, and 14 isolates exhibited resistance to Pb at the highest concentration tested (300 mg/L). These metal-resistant bacterial isolates exhibit substantial promise for bioremediation applications aimed at remediating Cu and Pb-contaminated aquatic environments.
Co-Authors Agung Suprihadi Agung Suprihadi Agus Sabdono Agus Setiadi Agus Subagio Alfiatuzzahra, Diva Anggoro, Naufal Sebastian Annisa Fadillah Annisa Nur Ayuningtyas Anto Budiharjo Anto Budiharjo Ardan, Kanaya Chandra Ajeng Sotya Arina Tri Lunggani Arina Tri Lunggani Aris Ismanto Asih Rismiarti, Asih Athried Elsima Az-Zahra, Salwa Zubaidah Azis Rifai Badzlin, Zahrah Syahmina Baskoro Rochaddi Bintoro Rudi Saputro, Bintoro Rudi Budi Raharjo Chatarina Umbul Wahyuni Choirunnisaa, Nadia Maharani Jasmine Christina Ratna Handayani, Christina Ratna Christina Retna Handayani, Christina Retna Clara Yully Diana Ekaristi Denis Denny Nugroho Sugianto Denny Nurkertamanda Dinalhaq, Putri Cahya Dinda Khairunnisa, Dinda Djuara P Lubis Doktorasaintifika, Heradita Kaniaazzahra Dudi Hardianto, Dudi Eiffeliena Nur'aini Fisikaningputri Purwienanti Eko Purnomo Eko Purnomo Elke Gildantia Elsima, Athried Endang Dwi Purbajanti Endang Kusdiyantini Erfianti, Tia Fiona Aqhila Dewi Fitri Arum Sasi, Fitri Arum Furgeva, Natasha Gentur Handoyo Hadi Endrawati Hapsari, Hererapratita Aysha Heksa Raihan Hererapratita Aysha Hapsari Herida, Azalia Puspa Hersugondo Hersugondo Herusugondo Herusugondo Hidayati, Bintang Nurul Imam Misbach Imam Mishbach Indah Sulistyarini Indras Marhaendrajaya Is Helianti IS HELIANTI Isnaeni, Aissya Safriliana Istiana, Rohma Ita Widowati Izzudin, Maulana Zidan Jihadi, Muhammad Shulhan Joedono Soedarsono Joedoro Sudarsono Karima, Radhita Kurniantoro, Vangga Deswanto Prasetyo Kurniawati, Mufida Budi Lilis Sugiarti Lilis Sugiarti Lina Mulyawati Maharani, Prabaswara Nasywa Maria, Atina Marissa Angelina Maulidya, Shaula Dzikra Mawarni, Shelina Nurunnisa Maya Aresteria Meliana, Sekar MG Isworo Rukmi Monalita, Ramadhebi Muhammad Amal Nurhakim, Muhammad Amal Muhammad Anwar Djaelani Muhammad Iskandar Zulkarnain Muhammad Iskandar Zulkarnain Muhammad Mulyadi, Muhammad Muhammad Zainuri Mulyawati, Lina Natasha Furgeva Nurhayati Nurhayati Nurhayati Nurhayati Okti Hajeng Kristiadi Pasha, Muhammad Affan Rahayu, Annisa Rizky Razana, Aqila Khaira Rejeki Siti Ferniah Retno Hartati Risma Wiharyanti Rizko, Nurmalisa Robertus Triaji Mahendrajaya Roslenawati Roslenawati Rudhi Pribadi Safirah, Dearesty Sarwo Edi Wibowo, Sarwo Edi Shasabila, Analies Devi Siti Maimunah Siti Nur Jannah Siti Nur Jannah Solly Aryza Sonny Abdi Setiyawan, Sonny Abdi Sri Pujiyanto Sri Pujiyanto Sri Pujiyanto Sri Pujiyanto Sri Rustini Subagiyo Subagiyo Sulis Setyowati, Sulis Suryani, Oda Gracia Ariela Sutrisno Anggoro Tony Hadibarata, Tony Tri Rahayu, Hesti Triwibowo Yuwono Wahyu Dewi Utari Haryanti Wahyuningsih, Candra Wardaja, Bodhicitta Widianingsih Widianingsih Wijanarka Wijanarka Yann Hardivillier Yason Lukman Sudjito, Yason Lukman Yosef Purwoko Yoshua Mario Sumbodo Yudi Yunanto Yumna Rahmadias Hanifa Yunior William Susanto Yuvita Muliastuti