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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 219 Documents
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Pengaruh Ekstrak Biji Durian dan Oksifluogen 240 g/L Terhadap Kematian Gulma di Perkebunan Kelapa Sawit Rama Sitinjak; Reza Surbakti; Gresia Sagala; Lawisto Brutu
JURNAL BIOS LOGOS Vol. 13 No. 1 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i1.46888

Abstract

This study aims: (1) to determine the effect of crude extract of durian seeds on weed control in oil palm plantations, (2) to determine the effect of the herbicide oxyfluogen 240 g/L which is effective on weed control in oil palm plantations, (3) to determine the effect of interaction of crude extract of durian seeds and oxyfluogen herbicide on weeds in oil palm plantations. The method used in this study was a randomized block design with a factorial pattern. The first factor was durian seed extract (D) with a concentration consisting of 4 levels, namely: control (D0), 100 ml/L (D1), 200 ml/L (D2), 400 ml/L (D3). The second factor is the herbicide oxyfluogen (O) with a concentration consisting of 4 levels, namely: control (o0), 1 ml/L (O1), 2 ml/L (O2), 3 ml/L (O3). From these 2 factors, 16 treatments were obtained with 2 replications, and the number of samples was 32 sample plots, plot area 1 m2, distance between replicates 1 m from 2 factors. The results of data analysis showed that administration of durian seed extract and administration of oxyfluogen had a very significant effect on the percentage of weed mortality in oil palm plantations, but the interaction had no significant effect on the first week and second week after application. The best treatment was the application of a combination of 400 ml/L of durian seed extract with 3 ml/L of oxyfluogen which killed the highest weeds around 81% after two weeks of application. Durian seed extract has potential as a bioherbicide, which can be used as an alternative technique in weed control systems in oil palm plantations.
Efektivitas Media Lilin Aromaterapi Berbahan Daun Pala (Myristica fragrans Houtt) dalam Mematikan Nyamuk Aedes aegypti Sitti Washliyah; Mariyana Ismail
JURNAL BIOS LOGOS Vol. 13 No. 1 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i1.46889

Abstract

Dengue fever is transmitted through the bite of a female mosquito that stores the dengue virus in its eggs, then the virus will be transmitted to humans through bites. The right way to control the spread of Dengue Fever is to control the vector population through the use of bioinsecticides whose basic ingredients come from plants containing chemicals that are toxic to insects. This study aims to determine the effectiveness of aromatherapy candle media made from nutmeg leaf (Myristica fragrans houtt) in killing the Aedes aegypti mosquito. This research uses experimental research with post test only group control design method. The number of samples used in one experiment was 50 Aedes aegypti mosquitoes. This research process uses palm wax wax media, and the composition of nutmeg leaf powder is 50 grams and wax is 100 grams. The results showed that for 12 hours every 2 hours the number of dead mosquitoes was monitored, the average number of mosquitoes that died with 3 trials was 60% experiment, while external factors, namely temperature and humidity measurements in both rooms did not affect the mortality of mosquitoes.
Genus Pteraeolidia: Filogeni dan Faktor Geografi Adelfia Papu; Farha Dapas; Parluhutan Siahaan
JURNAL BIOS LOGOS Vol. 13 No. 1 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i1.46890

Abstract

Pteraeolidia is a member of Cladobranchia that can be found in Indonesia. This study aims to investigate the phylogenetic and geographyc relationship within Pteraeolidia species not only in Indonesia. Sequences of Pteraeolidia COXI gene, were extracted from the GenBank and were analysed using K3Pu+F+I+G4 model. Haplotypenetwork analyses was used for the specific investigation. The likelihood phylogenetic tree of Pteraeolidia reveals monophyletic of P. ianthina. However, it splits into two branches with high distance matrix. P. semperi joins into one branch, despite, five sequences of P. ianthina which joined in the brach cause the clade become nonmonophyly. P. semperi not only found in East Australia but also in Sulawesi and Pacific.
Synthesis and Characterization of Hydroxyapatite from Polymesoda placans Shell using Wet Precipitation Method Charlena; Irma Herawati Suparto; Daniel Putra Oktavianus Laia
JURNAL BIOS LOGOS Vol. 13 No. 1 (2023): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.v13i1.47454

Abstract

Hydroxyapatite (HAp) is a bioceramic material that has chemical components similar to bone and teeth. Further development and exploration of calcium sources continued to be done to synthesize HAp. The purpose of this research was to synthesize HAp from the shell of Polymesoda placans using the wet precipitation method. The synthesis used in this study was by reacting calsium hydroxide from the shells and diammonium hydrogen phosphate as a phosphate precursor with the sintering temperatures of 600, 800, 1000, and 1100 oC and pH 9, 10 dan 11. Based on the X-ray diffraction spectrum, the best sintering temperature was 1000 oC with pH of 10-11 because it revealed the highest crystallinity (90.1 %). Functional groups analyzed by Fourier transform infrared showed that there were PO­43-, OH- , and CO32- groups in the HAp. Scanning electron microscope analysis showed uniform granule particles with particle sizes of 0.3-1.6 µm.
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.

Page 15 of 22 | Total Record : 219

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