Bioscientist : Jurnal Ilmiah Biologi
Vol. 14 No. 2 (2026): June

Identification of Potentially Pathogenic Bacteria in Fresh Marine Fish Sold at Kebon Roek Market, Mataram

Baiq Kesy Juliani (Universitas Mataram)
Sarkono (Universitas Mataram)
Bambang Fajar Suryadi (Universitas Mataram)



Article Info

Publish Date
22 Jun 2026

Abstract

This study aimed to enumerate, detect, and identify potentially pathogenic bacteria contaminating fresh marine fish sold at Kebon Roek Market, Mataram City. This preliminary laboratory-based descriptive survey focused on the fish species most frequently purchased by consumers: eastern little tuna (Euthynnus sp.), sardinella (Sardinella sp.), and Indian mackerel (Rastrelliger sp.). Fish samples were collected from nine purposively selected vendors located in different sections of the market, comprising three vendors each from the front, middle, and rear areas. Laboratory analyses included determination of the Total Plate Count (TPC), bacterial isolation using selective media, and bacterial identification based on cellular morphology, Gram-staining reactions, and biochemical characteristics. The bacterial loads were 3.36 × 10⁶ CFU/g in eastern little tuna, 1.76 × 10⁶ CFU/g in Indian mackerel, and 4.85 × 10⁵ CFU/g in sardinella. The bacterial counts detected in eastern little tuna and Indian mackerel exceeded the maximum limits specified in the Indonesian National Standard SNI 7388:2009. Bacterial identification revealed the presence of potentially pathogenic bacteria, including Enterobacter spp., Citrobacter spp., Escherichia coli, Edwardsiella spp., Vibrio spp., and Aeromonas spp. These findings indicate that fresh marine fish sold at Kebon Roek Market may serve as a vehicle for transmitting pathogenic bacteria to consumers. Therefore, improved hygiene and sanitation practices are required throughout the fish distribution and retail chain to ensure food safety.

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Journal Info

Abbrev

bioscientist

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences

Description

Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing ...