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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 AB SUSANTO Abhinaya, Danendra Daryl Ade Fajrian Adila Nawan Hasrimi Agung Suprihadi Agung Suprihadi Ahmad Thontowi Anggoro, Naufal Sebastian Aninditia Sabdaningsih Ariani, Nur Frida Arina Tri Lunggani Asgasatya, Syahid Fattah Az-Zahra, Salwa Zubaidah Barri Pratama Budi Raharjo Bunga Fajriani CATUR RIANI Chatarina Umbul Wahyuni Christina Ratna Handayani, Christina Ratna Christina Retna Handayani, Christina Retna Deverina Mergypta Dewantoro, Giwang Dian Wahyu Kemalaputri Dinalhaq, Putri Cahya Dudi Hardianto, Dudi Dyah Ayu Riani Dyah Wulandari Edwin Setiawan Eko Purnomo Elfira, Yolanda Elke Gildantia Elvi Yetti Endang Kusdiyantini Endang Kusdiyantini Fahmi, Maya Fitriana Ilul Farikha, Siti Lutfiatul Fauzaan, Muhammad Faishal Fauziah Citra Rahmawati Fitri Arum Sasi, Fitri Arum Fitria, Lutfiah Rahmadini Florentina Kusmiyati HARTAJANIE, LAKSMI Hasrimi, Adila Nawan Heni Wijayanti, Heni Hermanto, Michael Einstein Hermin P. Kusumaningrum Hermin Pancasakti Kusumaningrum Hermin Pancasakti Kusumaningrum Husna, Faza Laili IS HELIANTI Khoirul Huda Kristina Kristina Kurniawati, Mufida Budi Kusumaningrum, Hermin Laila Nur Faizah Lasria Pardede Lindayani, Lindayani Luthfy AN M Masfuroh Maerani Sumarno Mahmudah, Hawari Rosdiana Maria, Atina Maulana, Anand Reyna Mawarni, Risa Arum Maya Fitriana Ilul Fahmi MG Isworo Rukmi Mia Tri Wardani Monalita, Ramadhebi Muhammad Adib Mubarok Muhammad Mulyadi, Muhammad Muhammad Zainuri Norma Sainstika Pangestu Novita Rahmawati, Novita Nur Endah Wahyuningsih Nurhayati Nurhayati Nurlita Abdulgani Octavia Dewi Christiningrum Olivia Nisa Mumtianah Pardede, Lasria Prayogo, Fitra Adi Raden Mohamad Herdian Bhakti Rahayu, Annisa Rizky Rahmah Putri Sunarno Ratna Cempaka Lingga Rejeki Siti Ferniah Risky Panji Nugroho Risma Wiharyanti Safirah, Dearesty Saniha Adini, Saniha Sayono Setyo Nugroho Shabrina, Jauhara Siti Maimunah Siti Nur Jannah Siti Nur Jannah Siu S.S Langden Sonny Abdi Setiyawan, Sonny Abdi Soowanayan, Chumporn Sri Pujiyanto Suetrong, Satinee Sumarno, Maerani Susiana Purwantisari Teuku Tajuddin Thu'ti Alawiyyah Tony Hadibarata, Tony w wijanarka Wahyu Dewi U. Haryanti Wardaja, Bodhicitta Wien Kusharyoto Wijanarka Wijanarka Yason Lukman Sudjito, Yason Lukman Yohanes Chandrawijaya Yopi Yopi Yuliandini Pangestika