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Fauziah Fauziah
Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Syiah Kuala, Aceh, Indonesia

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Toksisitas Aktinobakteri ATS-7 Asal Tanah Stasiun Penelitian Soraya Kawasan Ekosistem Leuser Berdasarkan Waktu dan Suhu Inkubasi Dhea Amanda Adryan; Lenni Fitri; Fauziah Fauziah
Jurnal Bioleuser Vol. 9 No. 3: Desember 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jurnalbioleuser.v9i3.1430

Abstract

Actinobacteria are prokaryotic microorganisms that have a morphological form resembling filamentous fungi, and are generally found in soil and have many beneficial potentials. This study aims to determine the effect of the toxicity test of actinobacteria ATS-7 from the soil of the Soraya Research Station based on incubation time and temperature. Toxicity testing was carried out using the Brine Shrimp Lethality Test (BSLT) method to obtain the LC₅₀ value. The toxicity test was carried out by calculating the number of dead Artemia salina larvae. The results of the toxicity test showed that the ATS-7 isolate at a temperature of 32ºC which was shaken for 5 days with an LC₅₀ value of 77.49 ppm, 10 days with an LC₅₀ value of 62.88 ppm, 15 days with an LC₅₀ value of 53.70 ppm. This temperature has very high toxicity activity, and has an LC₅₀ value of <100 ppm, meaning that the incubation time at 32ºC greatly affects the toxicity test and is very toxic.
Efek Pemberian Ekstrak Etanol Kulit Batang Bau Langit (Cyathocalyx sumatranus Scheff.) terhadap Struktur Lambung Tikus (Rattus norvegicus) yang Diinduksi Parasetamol (Isolation and Analysis of Proteolytic Activity of Local Actinomycetes from Aceh, Indone Widya Sari; Masykur Masykur; Putri Novita Sari; Fauziah Fauziah; Rosnizar Rosnizar
Jurnal Bioleuser Vol. 8 No. 3: Desember 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jurnalbioleuser.v8i3.1940

Abstract

The purpose of this study was to determine the gastroprotective activity of ethanol extract of bau langit stem bark in the stomachs of paracetamol-induced rats. This research uses experimental method. Data analysis used a completely randomized design (CRD) with 5 treatments and 5 replicates. All treatments except normal control (K0) in esophageal intubation of paracetamol at a dose of 1350 mg/kg BB. Negative control (K-) is given aqueous for 14 days. P1, P2 and P3 treatments were given Cyathocalyx sumatranus extract of 150 mg/kg BB, 300 mg/kg BB and 600 mg/kg BB respectively. The treatment was given for 14 days and on the 7th day paracetamol was induced. Samples of gastric tissue were made histopathological preparations with paraffin method and hematoxylin-eosin (HE) staining. The variables observed include desquamation, erosion and ulceration of the gastric mucosa. The results showed that the gastric mucosa treated with K0, K-, P1 and P2 was desquamated. Erosion occurs in the treatment of K-. Ulceration was not found in all treatments. Paracetamol at a dose of 1350 mg/kgBB can induce erosion. The conclusion of this study is that the administration of C. sumatranus extract at doses of 300 mg/kgBB and 600 mg/kg BB is able to reduce gastric mucosal erosion due to paracetamol induction, while the dose of 150 mg/kg BB of C. sumatranus extract has not been able to prevent gastric mucosal damage.
Literatur Review: Pencemaran Merkuri di Perairan Indonesia Syifa Thifal Umaira; Syavira Azzahra; Nadiya Mufidah; Firdus Firdus; Muhammad Nasir; Alia Rizki; Fauziah Fauziah
Jurnal Bioleuser Vol. 8 No. 1: April 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jurnalbioleuser.v8i1.1967

Abstract

Mercury (Hg) belongs to a group of heavy metals that can pollute the environment. Pollution caused by mercury in the environment will cause bioaccumulation in aquatic biota, which then impacts human health. Mercury, especially in the form of methyl mercury, can be harmful to the central nervous system, causing sensory impairment and even permanent paralysis. Mercury pollution comes from various mining activities, industry, agriculture, household waste, and mercury mining itself. Accumulation of mercury in excess of quality standards can be dangerous and cause many negative impacts. This study examines pollution caused by mercury in Indonesian waters. The results showed that the objects most polluted by mercury are water, sediment, and aquatic biota. The highest percentage of pollution is found in rivers (39%), and the lowest in lakes and reservoirs (3%).
Co-Authors Alia Rizki Dhea Amanda Adryan Firdus Firdus Lenni Fitri Masykur Masykur Muhammad Nasir Nadiya Mufidah Putri Novita Sari Rosnizar Rosnizar Syavira Azzahra Syifa Thifal Umaira Widya Sari