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All Journal Bioscientist : Jurnal Ilmiah Biologi Journal of Microbiology, Biotechnology and Conservation
Baiq Kesy Juliani
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Social Sciences

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Anatomi Organ Vegetatif Tumbuhan Rija-Rija (Scleria melaleuca) di Kawasan Hutan Kemasyarakatan (HKM) Pusuk Lestari, Lombok Barat Adinda Emilia Sajida; Baiq Kesy Juliani; Baiq Zulifa Hemidia; Siti Rizki Fitri; R. Muhamad Azis Maulana; Kurniasih Sukenti; Tri Mulyaningsih
Journal of Microbiology, Biotechnology and Conservation Vol. 1 No. 1 (2025): Journal of Microbiology, Biotechnology and Conservation (jMBC)
Publisher : Master’s Program in Biology, Faculty of Mathematics and Natural Sciences, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jmbc.v1i1.5998

Abstract

Cyperaceae is a plant species that belongs to the sedges family and is characterised by a triangular stem. The sedges plant is frequently observed in rice fields and under the shade of trees, including Scleria melaleuca.The objective of this study is to ascertain the anatomical characteristics of S. melaleuca.The study employed a descriptive exploratory research method and was conducted at the Advanced Biology Laboratory, Faculty of Mathematics and Natural Sciences, University of Mataram. The S. melaleuca plant samples were collected from the Hutan Kemasyarakatan (HKM) Pusuk Lestari Area in Batu Layar, West Lombok Regency, West Nusa Tenggara. The samples included the root organs, stems, leaves and seeds. The samples were preserved in 70% alcohol and sliced using the hand-free section method. The results of the study demonstrated that the S. melaleuca exhibited distinctive characteristics, including the presence of bulliform cells between the leaf epidermis, the presence of both long and short cells, closed concentric vascular bundles in the stems, a triangular stem shape, and amphicribal vascular bundles in the roots.
Identification of Potentially Pathogenic Bacteria in Fresh Marine Fish Sold at Kebon Roek Market, Mataram Baiq Kesy Juliani; Sarkono; Bambang Fajar Suryadi
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i2.19823

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.
Co-Authors Adinda Emilia Sajida Baiq Zulifa Hemidia Kurniasih Sukenti R. Muhamad Azis Maulana Sarkono Sarkono Siti Rizki Fitri Suryadi, Bambang Fajar Tri Mulyaningsih