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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. 13 No. 2 (2023): JURNAL BIOS LOGOS" : 15 Documents clear
Pola Pertumbuhan dan Faktor Kondisi Ikan Kepar (Belontia hasselti) di Sungai Ambangah Kalimantan Barat Widadi Padmarsari Soetignya; Mardan Adijaya; Bambang Kurniadi; Marsiana Rida
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.42167

Abstract

The Malay Combtail fish (Belontia hasselti) is one of the dominant fish species in the Ambangah River that has the potential to be cultivated. This study aimed to determine the growth patterns and condition factor of the Malay Combtail fish (Belontia hasselti) in the Ambangah River, West Kalimantan. Fish samples were taken from May to August 2020 monthly. Parameters measured include total length, weight, sex ratio, and water quality. The results showed that the sex ratio between males and females was balanced (1:1.15). The growth pattern is negative allometric, and the population condition factor of the Malay Combtail fish for males, females, and a combination of both are more than one, which means good, and the magnitude is 1.77; 1.91 and 1.85. The water environmental factors namely temperature, brightness, and dissolved oxygen were still suitable for fish life, while the waters pH was in accordance with its natural condition (peat waters).
Isolation and Characterization of Potential Lignocellulosic Degrading Bacteria From chicken Manure Compost Zhafira Tiza Maesharoh Soleman; Feky Mantiri; Marhaenus Rumondor
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.42791

Abstract

Lignocellulose is the main component that can be found in plants. Lignocellulose consists of three components, namely hemicellulose, lignin, and cellulose. The maximum utilization of lignocellulose cannot be carried out without being degraded, however there are difficulties in carrying out the degradation. The difficulty faced in the degradation process is the presence of lignin components that provide strength and stiffness to the plant, which make it is quite resistant to the degradation process. Lignocellulose degradation requires delignification. The delignification process can be facilitated by enzymes produced by a number of microorganisms, including bacteria can produce lignocellulosic enzymes. This study aims to isolate and characterize lignocellulose-degrading bacteria in chicken manure, and to assess the ability of bacteria to degrade lignocellulose. The results obtained from this research showed that an isolate which has high similarity with Shigella flexneri bacteria which was found in chicken manure and exhibits a potential to degrade lignocellulose.
Fermentasi Sari Daging Buah Nangka (Artocarpus heterophyllus Lamk.) dengan Penambahan Ekstrak Kecambah Kacang Hijau (Phaseolus radiate L.) pada Pembuatan Nata Yoanli Theresa Dea; zulfa zakiah zakiah; rahmawati rahmawati rahmawati
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.43523

Abstract

Buah nangka (Artocarpus heterophyllus Lamk.) memiliki kandungan energi yang tinggi, yaitu 95 kalori/100 g dan dapat menjadi media pertumbuhan bagi bakteri Acetobacter xylinum pembentuk selulosa (nata). Salah satu faktor pendukung pertumbuhan  A. xylinum adalah sumber nitrogennya. Tujuan penelitian adalah untuk mengetahui pengaruh pemberian ekstrak kecambah kacang hijau (Phaseolus radiate L.) sebagai sumber nitrogen terhadap kualitas nata dari sari daging buah nangka. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 6 perlakuan konsentrasi sumber nitrogen meliputi kontrol (0%); ZA 1%; ekstrak kecambah kacang hijau 2,5%; 5%; 7,5%; dan 10%. Setiap perlakuan terdiri atas 3 ulangan. Berdasarkan hasil penelitian, penambahan ekstrak kecambah kacang hijau berpengaruh nyata terhadap ketebalan dan kadar serat nata yang dihasilkan. Nata mempunyai tekstur kenyal dan memiliki aroma khas nangka. Perlakuan terbaik ditunjukkan pada pemberian ekstrak kecambah 7,5% dengan rerata ketebalan 0,71cm dan kadar serat 2,66%. Hasil uji organoleptik yang paling disukai adalah aroma, tekstur, dan warna.Kata kunci: Fermentasi, buah nangka, sumber nitrogen, nata, Phaseolus radiate
Pengaruh Konsentrasi Ekstrak Etanol Daun Pare (Momordica charantia L) Terhadap Daya Hambat Pertumbuhan Bakteri Staphylococcus aurus Metode Difusi Trisna Widyanti; Dwi Sutiningsih; Mochamad Hadi
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.46213

Abstract

One of the plants that can be used as a drug is a plant Pare (Momordica charantia L). This is because the leaves are nutritious for health. In general, the natural chemical compounds found in pare leaves are momordin, momordisin, trichosanic acid, resins, resinic acid, saponi, flavonoids, vitamins A and C, and fatty oils.The purpose of this study was to determine the effect of ethanol extract concentration of pare leaves (Momordica charantia L) to the inhibitory power of Staphylococcus aureus bacteria diffusion method. This research method is in the form of quasi experimental by using diffusion method to see extract inhibition zone. Leaf ethanol extract was obtained by maceration extraction method. The sample used was the concentration of pare leaf ethanol extract consisting of 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. The results obtained at concentration of 10% have inhibitory power of 66.5% and increase with the increase of concentration up to 100% concentration has inhibitory power of 100%. Regression analysis got value (p = 0,00 <0,05) then Ha accepted, mean there is influence of ethanol extract concentration of pare leaf (Momordica Charantia L) of Staphylococcus aureus bacteria growth inhibition of diffusion method. Antibacterial activity of Momordica charantia L extract is more effective in inhibiting Staphylococcus aureus bacteria.
Fertigasi Pada Hidroponik Wick Dengan Pupuk Organik Cair Kotoran Sapi Untuk Tanaman Cabai Renaldy S Mamangkey; Dedie Tooy; Daniel P. M. Ludong
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.46345

Abstract

Chili (Capsicum annum L.) is a type of vegetable that is widely cultivated by farmers in several regions in Indonesia. The productivity of chili plants has decreased due to the excessive use of inorganic fertilizers. Fertilization using liquid organic fertilizer from cow dung is one effort to minimize the use of inorganic fertilizers. This study aims to examine the application of POC nutrition from cow dung in a wick hydroponic fertigation system for the development of chili plants. Observations were made to determine the water needs of plants (evapotranspiration) and the development of hydroponic chili plants with different concentrations of nutrients from liquid organic fertilizer from cow dung. Optimal treatment of giving nutrient concentrations of cow dung liquid organic fertilizer to plant water needs or evapotranspiration and development of chili plants is found at a concentration of 1,000 ppm (P3).
Kajian Penggunaan LED pada Pertumbuhan Tanaman Kailan dengan Sistem Hidroponik Dalam Ruangan Christian I G Hutapea; Leo Kalesaran; Daniel P. M. Ludong
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.46426

Abstract

The use of LED (Light Emitting Diode) in indoor hydroponic systems can optimize the process of photosynthesis in plants. This can be a replacement of sunlight during plant growth. This study aims to examine the treatment of LED light intensity and duration of irradiation on the vegetative growth of kailan (Brassica oleracea var. alboglabra L) in indoor hydroponic systems. This experimental study consisted of 5 treatments: exposure to white (A1) and blue (A2) LED lights, exposure time of 16 hours (B1) and 20 hours (B2) and sunlight (K0) as a control in a greenhouse. Treatment with LED lights placed in the growth chamber. Treatment consisted of 4 replicates with a total of 20 plants. The results showed that the white LED light intensity and 20 hours of irradiation time were better than other treatments including plant height, stem diameter, leaf width, leaf length, number of leaves, fresh weight, root weight and water efficiency.
Prediksi Perubahan Penggunaan Lahan Berbasis Cellular Automata Di Kota Batam Tahun 2041 Yohanes Paulus Goo Ado; Rieneke L. E. Sela; Fela Warouw
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.46570

Abstract

Batam City is one of the industrial cities that is quite attractive to investors. The publication of the Batam City Concession Agency shows that there are 1,309 leading industries with a total of 169,000 workers. This affects the increase in population and changes in land use. This study aims to analyze the driving and inhibiting factors of land use change and predict land use, especially settlements in Batam City in 2041 using the cellular automata method. Factors driving land use change are proximity to industrial areas, existing settlements, trade and service areas, office areas, transportation facilities, health facilities, and arterial roads. Weighting using AHP shows the biggest weight on the existing settlement factor. Factors inhibiting changes in land use consist of protected mangrove forests, as well as areas whose existence needs to be maintained such as airport/port areas, industrial areas, trade and services, and offices. Predictions show that settlement land has grown to 15,872 hectares, open land has decreased by 1,366 hectares, agriculture has decreased by 1,195 hectares, forests have decreased by 656 hectares.
Uji Kinerja Mesin Combine Harvester Kubota DC 70-plus Di Desa Tuyat Kecamatan Lolak Kabupaten Bolaang Mongondow Cindy Tamberongan; Ruland Rantung; Daniel Ludong
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.46609

Abstract

Combine Harvester Kubota DC 70-Plus, merupakan mesin yang membantu proses pemanenan padi dari memotong, menyalurkan, merontokkan, memisahkan gabah hingga membersihkan gabah sambil berjalan di lapangan sehingga bisa mempersingkat waktu pemanenan. Tujuan dari penelitian ini adalah menguji kinerja mesin Combine Harvester Kubota DC 70-Plus yang digunakan untuk pemanen padi di Kecamatan Lolak, pengujian ini meliputi kapasitas lapang dan efisiensi lapang serta kapasitas pemanenan dan konsumsi bahan bakar mesin Combine Harvester Kubota DC 70-Plus. Metode penelitian ini menggunakan metode eksperimental dalam pengumpulan data kemudian di analisis dan disajikan dalam bentuk tabel dan diagram serta diolah secara deskriptif. Kinerja dari Mesin panen Combine Harvester Kubota Dc 70-Plus di lahan menghasilkan Kapasitas lapang teoritis 0,665 Ha/jam, Kapasitas lapang efektif 0,420 Ha/jam serta Efisiensi lapang pemanenan yaitu 63.21% dan Kapasitas pemanenan yaitu 3818.77 Kg/Ha
Pengaruh Penggunaan Padu Terhadap Sifat Fisik, Kimia dan Organoleptik Jelly Drink Nanas (Ananas comosus L. Merr) Chi Chi Nur Anisa Basiru; Jenny E A Kandou; Lucia Cecilia Mandey; Yoakhim Oessoe
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.47074

Abstract

This study aims to analyze the physical, chemical characteristics and test the organoleptic acceptance of pineapple jelly drink with different concentrations of honey. This study used a completely randomized design (CRD) method which consisted of one factor, namely variations in the honey formula (11%, 13%, 15%, 17%). The results showed the physical and chemical characteristics of pineapple jelly drink as follows: suction power 3.95-4.97, syneresis 0.35-2.65%, pH 3.00-5.00, vitamin C 2.35-4, 13mg/g, reducing sugar 6.41-9.86%. Organoleptic test results Pineapple jelly drink with the concentration of adding honey that is most preferred by panelists with criteria for color, taste, aroma, texture is the F2 treatment, namely 13% honey concentration with an average color value of 5.06% (rather like), taste 5.06 % (rather liked), aroma 4.58% (rather liked), texture 4.92% (rather liked). Keywords: Jelly Drink, Pineaapple, Honey.
Partisipasi Masyarakat Lokal Dalam Pengelolaan Wisata Mangrove Di Kecamatan Bunaken Kota Manado Hillary Pelenkahu; Dwight Mooddy Rondonuwu; Ricky Max Stephenson Lakat
JURNAL BIOS LOGOS Vol. 13 No. 2 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i2.47705

Abstract

Abstrak Hutan mangrove di Kecamatan Bunaken Kota Manado yang terletak di kawasan Taman Nasional Laut Bunaken, merupakan destinasi wisata yang banyak dikunjungi wisatawan. Dalam kawasan ini terdapat zona pemanfaatan yang memperbolehkan adanya kegiatan ekowisata, pendidikan dan penelitian. Pengelolaan wisata mangrove berbasis ekowisata merupakan tanggung jawab semua pihak termasuk masyarakat yang ada di sekitarnya. Studi ini tujuannya guna mencari tahu persepsi dan tingkat partisipasi masyarakat lokal pada pengelolaan wisata mangrove. Penelitian menggunakan metode analisis kualitatif deskriptif. Hasil studi memperlihatkan persepsi masyarakat lokal pada pengelolaan wisata mangrove di Kecamatan Bunaken adalah baik. Hal ini berarti masyarakat paham terhadap pengelolaan wisata mangrove. Tingkat partisipasi masyarakat lokal mulai dari tahap perencanaan, pelaksanaan, pemanfaatan dan evaluasi ada di kategori baik, dengan nilai rata-rata 70%. Artinya masyarakat sudah berperan aktif dalam pengelolaan wisata mangrove. Dalam penelitian ini memperlihatkan persepsi masyarakat yang baik memberikan pengaruh positif pada tingkat partisipasi masyarakat pada pengelolaan wisata mangrove. Kata kunci : Partisipasi masyarakat, pengelolaan wisata mangrove, Kecamatan Bunaken Abstract The mangrove forest in Bunaken District, Manado City, located in the Bunaken Marine National Park area, is a tourist destination many tourists visit. This area has a utilization zone that allows ecotourism, education, and research activities. Management of ecotourism-based mangrove tourism is the responsibility of all parties, including the surrounding community. The study aimed to determine local communities' perceptions and level of participation in mangrove tourism management. The research used a descriptive qualitative analysis method. The results showed that the perception of local communities in managing mangrove tourism in Bunaken District is good, which means that people understand the management of mangrove tourism. The level of participation of local communities, from the planning, implementation, utilization, and evaluation stages, is in a suitable category, with an average value of 70%, which means the community has played an active role in managing mangrove tourism. This study shows that good community perceptions positively influence community participation in mangrove tourism management. Keywords : Local community's participation, mangrove tourism management, Bunaken District

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