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All Journal Jurnal Mahasiswa Ilmu Kesehatan Obat: Jurnal Riset Ilmu Farmasi dan Kesehatan
Hilda Kadir
Universitas Muhammadiyah Makassar
Health Professions Nursing Public Health

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Penentuan Nilai LC₅₀ dan Kategori Toksisitas Ekstrak Etanol Daun Trembesi (Samanea saman) terhadap Larva Udang (Artemia salina Leach) Menggunakan Metode Analisis Probit Haryanto; Fitrah Amalia; Ahmad Ramadhan; Maretta Kartika Ayu Ridwan; Husnul Hatima; Hilda Kadir; Sisma Efendi; Nurul Nisai
Jurnal Mahasiswa Ilmu Kesehatan Vol. 4 No. 2 (2026): Jurnal Mahasiswa Ilmu Kesehatan
Publisher : STIKes Ibnu Sina Ajibarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59841/jumkes.v4i2.3796

Abstract

Penelitian ini bertujuan untuk mengkarakterisasi tingkat toksisitas ekstrak etanol 90% daun trembesi (Samanea saman) terhadap larva Artemia salina melalui penentuan nilai LC₅₀ menggunakan metode Reed-Muench dan analisis probit. Penelitian ini merupakan penelitian eksperimental dengan rancangan post-test only control group design. Larva Artemia salina digunakan sebagai organisme uji dan dipaparkan pada berbagai konsentrasi ekstrak, yaitu 10 ppm, 100 ppm, 500 ppm, 1000 ppm, 5000 ppm, dan 10.000 ppm. Parameter yang diamati adalah jumlah kematian larva setelah 24 jam perlakuan. Hasil penelitian menunjukkan bahwa persentase kematian larva meningkat seiring dengan kenaikan konsentrasi ekstrak, yang mengindikasikan adanya hubungan dosis-respons. Perhitungan nilai LC₅₀ dengan metode 823 ppm. Berdasarkan klasifikasi toksisitas Brine Shrimp Lethality Test (BSLT), nilai LC₅₀ tersebut termasuk dalam kategori toksik moderat / sedang. Hal ini menunjukkan bahwa ekstrak etanol 90% daun trembesi memiliki aktivitas toksisitas sedang terhadap larva Artemia salina. Dengan demikian, ekstrak ini berpotensi sebagai sumber senyawa bioaktif yang dapat dikembangkan lebih lanjut namun diperlukan penelitian lanjutan untuk mengidentifikasi senyawa aktif serta mengevaluasi keamanan pada sistem biologis yang lebih kompleks.
Evaluasi Aktivitas Farmakologi Simplisia Kopi Arabika (Coffea arabica) pada Berbagai Konsentrasi terhadap Sistem Saraf Otonom dan Sistem Saraf Pusat Anggun Aldiansa; Ilmi Nurashiilah; Nahla Aulia Azis; Nasifa Kayla Putri; Andi Tenriani Awaliyah; Ayu Azkiya; Aulya Nurul Imama R; Hilda Kadir; Muhammad Chairul Anam; Andi Utari Prasetya Ningrum
OBAT: Jurnal Riset Ilmu Farmasi dan Kesehatan Vol. 4 No. 1 (2026): Januari: OBAT: Jurnal Riset Ilmu Farmasi dan Kesehatan
Publisher : Asosiasi Riset Ilmu Kesehatan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/obat.v4i1.2015

Abstract

Arabica coffee (Coffea arabica) contains various bioactive compounds such as caffeine, polyphenols, flavonoids, and alkaloids that have the potential to produce diverse pharmacological effects on both the autonomic and central nervous systems. The variation in its chemical composition is influenced by factors such as cultivar, post-harvest processing, and preparation methods, resulting in biological responses that are dose-dependent and not always linear. This study aimed to evaluate the pharmacological activity of arabica coffee simplicia powder at three concentrations (1%, 2%, and 4%) by observing parasympathomimetic, parasympatholytic, sympathomimetic, sympatholytic, analeptic, central nervous system stimulation and depression, as well as muscle relaxation parameters. The research was conducted using a laboratory experimental design with test animals administered orally according to the designated concentrations. The results showed that some parameters increased at higher concentrations, such as parasympathomimetic activity (51.85%) and central nervous system stimulation (63.74%), while other parameters demonstrated decreasing or biphasic patterns, such as sympatholytic activity, which was high at 1% and 4% but low at 2%, and analeptic activity, which dropped sharply at 2% and increased again at 4%. These response patterns align with literature indicating that caffeine and polyphenols such as chlorogenic acid may interact synergistically or antagonistically, generating complex pharmacological effects through mechanisms involving adenosine modulation, excitatory neurotransmitters, the enteric nervous system, as well as antioxidant and anti-inflammatory pathways. Overall, this study demonstrates that arabica coffee simplicia exhibits multipotential pharmacological activity, with responses strongly influenced by concentration and the composition of its bioactive compounds, thereby providing a basis for further research on the phytopharmaceutical potential of arabica coffee.
Co-Authors Ahmad Ramadhan Andi Tenriani Awaliyah Andi Utari Prasetya Ningrum Anggun Aldiansa Aulya Nurul Imama R Ayu Azkiya Fitrah Amalia Haryanto Husnul Hatima Ilmi Nurashiilah Maretta Kartika Ayu Ridwan Muhammad Chairul Anam Nahla Aulia Azis Nasifa kayla putri Nurul Nisai Sisma Efendi