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Jurusan Biologi FMIPA Universitas Sam Ratulangi
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Jurnal Bios Logos
Published by Universitas Sam Ratulangi
ISSN : 20889569     EISSN : 26563282     DOI : https://doi.org/10.35799/jbl.11.2.2020.28153
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology
JURNAL BIOS LOGOS is the journal published by Department of Biology, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University. The aims of the journal are to publish original research papers and article review in biology science i.e. botany, zoology, molecular biology, microbiology, ecology, diversity and conservation, taxonomy and biogeography. BIOS LOGOS is published two times per year (February and August)
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 15 Documents
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Search results for , issue "Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS" : 15 Documents clear
Aktivitas Antibakteri Fraksi Etanol dan Etil Asestat Biji Sawo (Achras zapota L.) Terhadap Pertumbuhan Bakteri Shigella flexneri dan Bacillus cereus IHB B 379 Fuza Amalia; Elvi Rusmiyanto; Rahmawati
JURNAL BIOS LOGOS Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i1.54052

Abstract

Tanaman sawo (Achras zapota L.) memiliki kandungan senyawa bioaktif berupa alkaloid, flavonoid, kuinon, saponin, steroid dan triterpenoid serta tanin yang dapat berperan sebagai antibakteri. Senyawa bioaktif tersebut dapat dimanfaatkan untuk mengatasi penyakit diare yang disebabkan oleh bakteri Shigella flexneri dan Bacillus cereus. Tujuan penelitian ini yaitu untuk menentukan aktivitas antibakteri dan konsentrasi terbaik fraksi etanol dan fraksi etil asetat biji sawo (A. zapota) terhadap pertumbuhan bakteri S. flexneri dan B. cereus. Biji sawo (A. zapota) yang digunakan berasal dari Desa Arang Limbung, Kubu Raya dan bakteri uji berasal dari koleksi Laboratorium Mikrobiologi FMIPA Universitas Tanjungpura. Uji aktivitas antibakteri menggunakan metode difusi cakram dengan parameter berdasarkan perbedaan tingkat konsentrasi fraksi 0,0025; 0,005; 0,01 g/mL serta DMSO 10% dan ciprofloaxin 500 g/mL digunakan sebagai pembanding. Cakram pada medium dibuat dengan diameter sebesar 6 mm, kemudian dimasukkan fraksi etanol dan fraksi etil asetat biji sawo (A. zapota) dan diinkubasi pada suhu 370C selama 24 jam. Hasil penelitian menunjukkan bahwa konsentrasi terbaik fraksi etanol biji sawo (A. zapota) dalam menghambat pertumbuhan S. flaxneri dan B. cereus adalah 0,005 g/mL dan 0,01 g/mL. Konsentrasi terbaik fraksi etil asetat biji sawo (A. zapota) dalam menghambat pertumbuhan S. flaxneri dan B. cereus adalah 0,0025 g/mL dan 0,01 g/mL. Kata Kunci: Achras zapota; antibakteri; Shigella flexneri; Bacillus cereus; biji sawo
Uji Organoleptik Daun Jeruju (Acanthus ilicifoliusL.) sebagai Minuman Herbal Dengan Penambahan Jahe (Zingiber officinale) Sinta Rahayu; M. Idris; Rahmadina
JURNAL BIOS LOGOS Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i1.54662

Abstract

Tanaman Jeruju (Acanthus ilicifolius L.) merupakan salah satu jenis mangrove yang memiliki banyak manfaat, salah satunya adalah pemanfaatannya untuk membuat teh dengan campuran jahe (Zingiber officinale). Penelitian ini menggunakan metode eksperimen dengan analisis data kuantitatif untuk menguji kadar antioksidan dan kadar flavonoid pada berbagai formulasi, yaitu 80%: 20%, 70%: 30%, 60%: 40%, dan 50%: 50%. Selain itu, penelitian ini juga menggunakan metode survei dengan analisis data kualitatif untuk menguji sifat organoleptik. Hasil penelitian menunjukkan bahwa formulasi dengan 50% jeruju dan 50% jahe memiliki kadar antioksidan dan kadar flavonoid total tertinggi. Dari segi organoleptik, formulasi 60%: 40% mendapatkan nilai tertinggi dari segi kesukaan yaitu 56%, sedangkan dari segi aroma, formulasi 60%: 40% mendapatkan nilai tertinggi yaitu 75%. Dari segi rasa, formulasi 50%:50% mendapatkan nilai tertinggi yaitu 75,6%, dan dari segi warna, formulasi 50%:50% mendapatkan nilai tertinggi yaitu 80,4%.
Organoleptic Test of Salam Leaves (Syzygium polyanthum) as an Herbal Drink with the Addition of Moringa Leaves (Moringa oleifera L.) Kirana Pebriana; M. Idris; Rahmadina
JURNAL BIOS LOGOS Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i1.54689

Abstract

Tea is a fresh drink made from processed tea leaves. Bay leaves and Moringa leaves are used as the main ingredients in making this tea. Syzygium polyanthum and Moringa oleifera L. plants contain the same compounds, namely flavonoids and have anti-inflammatory properties. The purpose of this study was to measure antioxidant and flavonoid levels in the making of bay leaf tea with the addition of Moringa leaves, as well as conduct organoleptic tests in Kampung Dalam Village. This research method is experimental with quantitative data analysis, using four formulations in antioxidant and flavonoid tests, namely 80%: 20%, 70%: 30%, 60%: 40%, and 50%: 50%, as well as survey method with quantitative data analysis for organoleptic properties test. The results showed that the highest antioxidant and flavonoid levels were found in the 80:20% formulation, which were 13.22 ppm and 42.7500 mQE/g. The organoleptic assessment results showed that the 50%:50% formulation had the highest level of liking at 75% with a neutral description. In addition, the 70%:30% formulation has the highest aroma level of 77.5% with a scented description, the 50%:50% formulation has the highest taste level of 70% with a tasteless description, and the 50%:50% formulation has the highest color level of 67.5% with a yellowish green description. The conclusion is that the addition of moringa leaves as an herbal drink to bay leaves has a significant effect on liking, aroma, taste and color
Genetic Variation of Foxtail Millet (Setaria italica (L.) P. Beauv.) Germplasm From Polewali Mandar West Sulawesi Based On Morphological Characters Ramlah Ramlah; Indrastuti Indrastuti; Mufti Hatur Rahmah; Marcia Bunga Pabendon
JURNAL BIOS LOGOS Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i1.54702

Abstract

Foxtail millet (Setaria italica (L.) P. Beauv.) is a cereal crop that has long been domesticated worldwide and has been adopted as a model crop to provide a deeper understanding of plant biology. This plant has long been a mainstay of indigenous Indonesian people, especially in Polewali Mandar, West Sulawesi Province. This study aims to evaluate the genetic variation of foxtail millet germplasm from Polewali Mandar, West Sulawesi based on morphological characters. Three germplasm populations were collected from Polewali Mandar to assess genetic variation in millet germplasm. The observations of morphological traits were carried out based on the IBPGR of Setaria italica. Genetic variation in foxtail millet populations was measured using 28 morphological traits with nine qualitative and 19 quantitative characters. The research showed that seed color, stem diameter, plant height, panicle stalk length, and panicle stalk diameter had diverse variations. Cluster analysis of morphological characters using the UPGMA method shows a similarity coefficient ranging from 0.15-0.2. At a genetic similarity coefficient of 0.2, the three populations were divided into Cluster A and Cluster B. Cluster A consists of two populations (Minna' and Lasse'). In contrast, Cluster B consists of one population (Bulawang). The millet population SLB.C.3-SLB.A.1 has the highest genetic distance and is a potential candidate to be selected as a parent cross to produce higher het-erosis. Intensification of millet plant breeding programs is expected to increase the genetic basis for determining specific characteristics.
Keanekaragaman Jenis Makroalga Di Perairan Kecamatan Tombariri Kawasan Taman Nasional Bunaken Sulawesi Utara Yoel William Prasetyo Kamto; Farha Dapas; Sendy Rondonuwu
JURNAL BIOS LOGOS Vol. 14 No. 1 (2024): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v14i1.55022

Abstract

Makroalga menjadi salah satu organisme laut yang melimpah di perairan. Fungsi makroalga di alam yaitu menjadi sumber makanan serta dapat menyediakan habitat untuk biota laut. Makroalga juga banyak memberikan manfaat dalam bidang pangan, ekonomi dan kesehatan untuk itu perlu dilakukannya penelitian terhadap makroalga. Tujuan penelitian ini untuk menganalisis keanekaragaman jenis makroalga di Perairan Kecamatan Tombariri Sulawesi Utara. Penelitian ini menggunakan metode purposive sampling dengan pembuatan garis transek dan plot pada zona littoral. Inventarisasi makroalga yang ditemukan di Perairan Kecamatan Tombariri terdiri dari 17 famili, 32 jenis dan 3,705 individu makroalga yang terbagi dalam tiga divisi. Terdapat 20 jenis makroalga Divisi Chlorophyta, 4 jenis makroalga Ochrophyta dan 8 jenis makroalga Rhodophyta. Indeks keanekaragaman makroalga di Perairan Kecamatan Tombariri termasuk dalam kategori sedang dengan nilai (2,79). Indeks keanekaragaman stasiun I Desa Poopoh memiliki nilai (2,78) dan stasiun II Desa Teling (2,44). Kondisi jenis makroalga cukup stabil dan tekanan ekologis sedang.

Page 2 of 2 | Total Record : 15

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