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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 266 Documents
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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
Identifikasi dan Potensi Probiotik Bakteri Asam Laktat pada Pangan Fermentasi Lokal Zaenab Fauziyah; Lista Nia; Febbi Julia Nandi; Rahmad Lingga; Henny Helmi
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.v13i2.47900

Abstract

Lactic Acid Bacteria (LAB) are bacteria involved in food fermentation processes and can be used as probiotics. This study aims to isolate, identify and determine the probiotic potential of Lactic Acid Bacteria (LAB) at the end of the fermentation of local food on the island of Bangka and South Sumatra (aruk rice, anchovy sauce and tempoyak). Isolation and identification of lactic acid bacteria were carried out macroscopically, microscopically, biochemically and molecularly assays based on 16S rRNA. The probiotic potency of the isolates was tested based on their resistance to acid and antibacterial activity. LAB that plays a role in the process of making aruk rice is Lactobacillus plantarum with rod-shaped characteristics, gram positive, does not have the catalase enzyme, is able to ferment glucose into acid, is able to ferment lactose and sucrose, does not move, is resistant to acids and has antibacterial activity against Staphylococcus aureus.
Karakteristik Morfometrik Hampala macrolepidota Kuhl & Van Hasselt, 1823 di Indonesia Feby Dwi Restuningsih; Roza Elvyra; Haryono Haryono
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.v13i2.48688

Abstract

Hampala macrolepidota is a native fish in Indonesia that has potential as an ornamental fish and a consumption fish. The research aims were to determine the geographical classifying of fish and to analyze morphometric characteristics of H.macrolepidota morphology. The research was conducted at Fish Biosystematics Laboratory, Biosystematics and Evolution Research Center-BRIN Cibinong. Sample measured were 371 wet-preserved specimens of H. macrolepidota from various water lotic and lentic habitats in Indonesia using standard morphometric and truss morphometric methods. The collected data was analyzed using significance test with Wilk’s Lambda. Research result showed there is a tendency standard morphometrics is more accurate than truss morphometrics for classified H.macrolepidota according to their distribution area in Indonesia. This shows that H. macrolepidota on the islands of Sumatera, Jawa, and Kalimantan have a high similarity is due to the fact that the three islands are part of the Sunda Shelf.
Isolation and Identification of Thermophilic Bacteria from Lahendong Hot Spring, North Sulawesi Christiana Abrita Nathania Corneles; Feky Mantiri; Marina Singkoh
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.v13i2.50184

Abstract

Thermophilic bacteria are a group of procaryotic organisms that can grow in high temperature around 450C until 900C. Thermophilic bacteria are able to produce lipase thermostable enzyme. Lipase thermostable enzymes produced from thermophilic bacteria are able to catalyze the hydrolysis of triglycerides into glycerol and free fatty acids and the synthesis of esters in organic solvents. Lipase thermostable enzymes are potential to be used in industrial production. Lipase enzymes have been used for the production of laundry detergents as additives or to replace chemical detergents because of their environmental friendliness. This research was aimed to isolates and identified themophilic bacteria from Lahendong hot springs, North Sulawesi and to conduct the morphological characterization, biochemical test, and molecular identification with 16S rRNA. Results showed that isolates obtained from the- Lahendong hot spring have high similarities with Geobacillus kaustophilus, Bacillus cereus, and Geobacillus lituanicus. The three isolates are able to produce lipase thermostbale enzyme.
Karakter Bakteri Azotobacter dan Azospirillum dari Rizosfer Tanaman Lada di Lahan Bekas Tambang Timah Novalia lia; Eddy Nurtjahya; Ratna Santi; Eka Sari
JURNAL BIOS LOGOS Vol. 12 No. 1 (2022): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v12i1.34960

Abstract

The negative impact of tin mining is that it can decrease the productivity of land functions for plant growth. Efforts to improve the soil that can be offered biologically by obtaining potential microbes such as Azotobacter and Azospirillum bacteria. This study aims to count up the population and to isolate and characterize Azotobacter and Azospirillum bacteria of pepper crop rhizosphere in ex-tin mined soil. The research site is Air Duren Village, Bangka Regency and Mesu Village, Central Bangka Regency. The research methods used are soil sampling, isolation, morphological and physiological characterization of biochemistry. The results showed the highest number of Azotobacter and Azospirillum bacterial populations found in the location of Mesu Village. Also obtained seven isolates that lead to the genus Azotobacter with isolate codes TMT6U3, TMT6U2, TST6U1, TST6U3, TMT7U3 and genus Azospirillum isolate code TST5U1, TST6U2 which are gram rods negative bacteria. The seven isolates show resistant to heavy metal Pb, not pathogen to plants, animals and humans. Keywords: Azotobacter and Azospirillum bacteria; pepper; ex tin-mined soil AbstrakDampak negatif dari penambangan timah yaitu dapat menurunkan produktivitas fungsi lahan bagi pertumbuhan tanaman. Upaya perbaikan tanah yang dapat ditawarkan yaitu secara biologi dengan mendapatkan mikroba potensial seperti bakteri Azotobacter dan Azospirillum. Penelitian ini bertujuan menghitung jumlah populasi dan mengkarakterisasi bakteri Azotobacter dan Azospirillum asal rizosfer tanaman lada di lahan bekas tambang timah. Lokasi penelitian ini adalah Desa Air Duren, Kabupaten Bangka dan Desa Mesu, Kabupaten Bangka Tengah. Metode penelitian yang digunakan yaitu pengambilan sampel tanah, isolasi, karakterisasi morfologi dan fisiologis biokimia. Hasil penelitian menunjukkan jumlah populasi bakteri Azotobacter dan Azospirillum tertinggi terdapat pada lokasi Desa Mesu. Dari hasi penelitian juga diperoleh tujuh isolat yang mengarah pada genus Azotobacter dengan kode isolat TMT6U3, TMT6U2, TST6U1, TST6U3, TMT7U3 dan genus Azospirillum kode isolat TST5U1, TST6U2 yang merupakan bakteri Gram negatif berbentuk batang. Ketujuh isolat tersebut menunjukkan bakteri resisten terhadap logam berat Pb, tidak patogen terhadap tumbuhan, hewan dan manusia.Kata kunci: bakteri Azotobacter dan Azospirillum; lada; lahan bekas tambang timah
Potensi Alga Halymenia durvillei Sebagai Sumber Antioksidan Alami Prisilia Moniung; Marina Singkoh; Regina Butarbutar
JURNAL BIOS LOGOS Vol. 12 No. 1 (2022): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v12i1.36721

Abstract

Red algae have the ability to produce secondary metabolites which are bioactive compounds. The content of secondary metabolites from red algae can be determined by an approach method that can provide information on the presence of secondary metabolites. The purpose of this study was to identify bioactive compounds, as well as to analyze the natural antioxidant activity of H. durvillei algae. Extracts were made by maceration method using 96% ethanol. Antioxidant activity test using DPPH method. Algae extract H. durvillei contains compounds of alkaloids, tannins, saponins and phenols which have antioxidant activity that can counteract the formation of free radicals. The results of antioxidant tests conducted using UV-Vis spectrophotometry on the ethanolic extract of H. durvillei algae showed an IC50 value of 101.22 ppm. Keywords: Red Algae (H. durvillei); Bioactive Compounds; Natural Antioxidants  ABSTRAKAlga merah memiliki kemampuan untuk memproduksi metabolit sekunder yang bersifat sebagai senyawa bioaktif. Kandungan senyawa metabolit sekunder dari alga merah dapat diketahui dengan suatu metode pendekatan yang dapat memberikan informasi adanya senyawa metabolit sekunder. Tujuan penelitian ini untuk mengidentifikasi senyawa bioaktif, serta menganalisis aktivitas antioksidan alami yang terdapat pada alga H. durvillei. Pembuatan ekstrak dilakukan dengan metode maserasi menggunakan etanol 96%. Uji aktivitas antioksidan menggunakan metode DPPH. Ekstrak Alga H. durvillei memiliki kandungan senyawa alkaloid, tanin, saponin dan fenol yang memiliki aktivitas antioksidan yang dapat menangkal terbentuknya radikal bebas.Hasil uji antioksidan yang dilakukan menggunakan spektrofotometri UV-Vis pada ekstrak etanol alga H. durvillei menunjukkan nilai IC50 sebesar 101.22 ppm. Kata Kunci: Alga Merah (H. durvillei); Senyawa Bioaktif; Antioksidan Alami 
Kepadatan Famili Ikan Karang di Perairan Desa Popareng, Minahasa Selatan, Sulawesi Utara, Indonesia Putri Tesalonika Rondonuwu; Saroyo Sumarto; Roni Koneri; Eko Handoyo
JURNAL BIOS LOGOS Vol. 12 No. 1 (2022): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v12i1.39175

Abstract

Bunaken National Park is a conservation development area designated by the government and is located in North Sulawesi Province. One of the conservation partnership areas of Bunaken National Park is located in Popareng Village, Tatapaan District, South Minahasa Regency. Bunaken National Park (TNB) has a diversity of marine life, one of which is coral fish that live in association with coral reefs. However, the condition of many coral reefs has been damaged so that the reef fish that live in the area are much reduced. Threats from community activities that are difficult to monitor are the cause because the location on the South Coast of TNB is far away or difficult to monitor. This study aims to examine the density of reef fish in the waters of Popareng Village, South Minahasa, North Sulawesi. The method used is the Underwater Visual Census (UVC), with data collection techniques using a camera for video and photos of reef fish. This research was conducted in 3 different locations, namely Karang Tinggi, Laikit, and Tanjung Ringgi. The results obtained 22 families, 83 species, 1961 individuals. The highest density of reef fish was at the Laikit location, which was 15,260 Ind/Ha and the dominant family at the three observation sites was Pomacentridae. Keywords: Reef Fish; Density, Popareng; Pomacentridae; BunakenAbstrak Taman Nasional Bunaken merupakan kawasan pengembangan konservasi yang ditunjuk pemerintah dan terletak di Provinsi Sulawesi Utara. Salah satu area kemitraan konservasi Taman Nasional Bunaken terletak di Desa Popareng, Kecamatan Tatapaan, Kabupaten Minahasa Selatan. Taman Nasional Bunaken (TNB) memiliki keragaman biota laut salah satunya ikan karang yang hidup berasosiasi dengan terumbu karang. Namun kondisi terumbu karang banyak yang telah rusak sehingga ikan karang yang hidup di daerah tersebut jauh berkurang. Ancaman dari aktivitas masyarakat yang sulit terpantau menjadi penyebab karena lokasi di Pesisir Selatan TNB yang jauh atau susah untuk dilakukan pengawasan. Penelitian ini bertujuan untuk mengkaji kepadatan ikan karang di Perairan Desa Popareng, Minahasa Selatan, Sulawesi Utara. Metode yang digunakan adalah Underwater Visual Census (UVC), dengan teknik pengambilan data menggunakan kamera untuk video dan foto ikan karang. Penelitian ini dilakukan pada 3 lokasi berbeda yaitu Karang Tinggi, Laikit, dan Tanjung Ringgi. Hasil penelitian didapatkan 22 famili, 83 spesies, 1961 individu. Kepadatan ikan karang tertinggi ada pada lokasi Laikit yaitu 15.260 Ind/Ha dan famili yang mendominasi pada ketiga lokasi pengamatan adalah Pomacentridae.Kata Kunci: Ikan Karang; Kepadatan; Popareng; Pomacentridae; Bunaken

Page 16 of 27 | Total Record : 266

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