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BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan)
Published by Universitas Medan Area
ISSN : 25975269     EISSN : 2356458X     DOI : 10.31289
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Biolink focuses on the publication of the results of scientific research related to fields. This article is published in the internal and external academic community of the University of Medan Area (UMA) especially in the field of Biology. Biolink publishes scientific articles in the scope of biology that includes environmental biology, industrial biology and health biology. Published articles are the results of research articles, studies or critical and comprehensive scientific studies on important issues related to the field of biology.
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Articles 6 Documents
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Search results for , issue " Vol 1, No 2 (2015): Februari" : 6 Documents clear
SIFAT FISIK MINYAK ATSIRI DAUN PALA (Myristica fragrans Houtt) ACEH SELATAN Damayanti, Rizki; Fahmi, Cut Nurul; Efendi, Rustam
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (142.332 KB) | DOI: 10.31289/biolink.v1i2.727

Abstract

Essential oils are oils derived from plants that are aromatic. Numeg leaves are part of plant that containing essential oil. Each of essential oils from different plants will have different physical properties. In this study, the essential oil is produced using steam distillation method. The purpose of this study was to determine the physical properties of essential oils of nutmeg leaves South Aceh. The physical properties of essential oils can be evaluated from the percentage of moisture content, ash content, aroma, color, and rendemen. The results showed that the essential oil of nutmeg leaves are pale yellow, has a characteristic smell of nutmeg, the percentage of moisture content and ash, viscosity, density is respectively 6.8%, 2.1%, 0.4% yield density, 3.8 P, 0576 g/cm3. The essential oil of nutmeg leaves South Aceh can be used as pharmaceuticals. But the density of leaf nutmeg oil does not comply with ISO Standard.
PENGARUH KONSENTRASI BASA TERHADAP PRODUK HIDROLISIS ESTER Saragih, Sri Wahyuna
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.92 KB) | DOI: 10.31289/biolink.v1i2.728

Abstract

This study aims to determine the effect of concentration of base to ester hydrolysis products. Ester can dihidroisis with an alkaline catalyst at different concentrations. In this study, the concentration of metal acetate used was 1 M NaOH while coud concentration was 0.5 M, 0.75 M, 1 M, 1.25 M. The hydrolysis reaction using ethanol and refluxed for 2 hours at room temperature. Hydrolysis of methyl acetate ester compounds produced methanol with purity varies by different concentrations of methyl acetate and NaOH. At concentrations of 0.5 M NaOH acquired 79.5068% purity methanol, 0.75 M NaOH concentration 85.6665% purity methanol, 1 M NaOH concentration 99.6311% purity methanol and NaOH concentration of 1.25 M purity methanol 100,0000 %. Based on the results of the hydrolysis product purity shows the influence of the concentration of NaOH to the product ester hydrolysis. Methanol compound structure was analyzed by an infrared spectrometer and a mass spectrometer.
UJI AKTIVITAS DAN IDENTIFIKASI JAMUR RHIZOSFER PADA TANAH PERAKARAN TANAMAN PISANG (Musa paradisiaca) TERHADAP JAMUR FUSARIUM Anggraeni, Dewi Nur; Usman, Muhammad
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (398.285 KB) | DOI: 10.31289/biolink.v1i2.729

Abstract

The main cause of decline in banana production is fusarium wilt caused by the fungus Fusarium oxysporum f.sp.cubense (Foc). This disease is systemic, it is very dangerous because it can kill plants. Fusarium wilt disease ranks first in the list of diseases of bananas in Indonesia, fusarium wilt very difficult to control because it has not found a commercial banana cultivars resistant. Integrated Pest Management (Biological Control) using biological agents, one of which is the rhizosphere that has the ability to suppress the growth of Fusarium wilt (Fusarium oxysporumf.sp.cubense) in vitro. The purpose of this study was to determine the ability of an antagonist of the rhizosphere fungus to fungus fusarium. This research method is a rhizosphere fungal activity test against fusarium fungus. The results showed that 12 isolates the rhizosphere has the potential to inhibit the growth of fungi fusarium the percentage inhibition ie 82% of isolates A1, B2 D3 by 83% and 80%, A2 isolates the isolates that produce inhibition of the smallest amounting to 15%. Based on identification consists of rhizosphere fungi genus Trichoderma sp., Aspergillus sp., And Penicillium sp.
PENGARUH FORTIFIKASI KANDUNGAN BAHAN ORGANIK DARI PUPUK ORGANIK BERBAHAN BAKU FESES SAPI POTONG DAN FESES AYAM NIAGA PEDAGING TERHADAP PRODUKSI SEGAR RUMPUT GAJAH(Pennisetum purpureum) Sunu, Prayogi
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (194.053 KB) | DOI: 10.31289/biolink.v1i2.722

Abstract

The purpose of this study was to determine the effect of commercial broiler chicken feces as mixing beef cattle feces to raw material organic fertilizer from organic material aspects of the content and determine the effect of fertilizer results fortification against the total production of fresh grass. The material used is beef cattle feces as much as 930 kg, the commercial broiler chicken feces 270 kg, 2.4 liter EM4. This research method using a completely randomized design (CRD) with four treatments (R), namely: R0: 100% beef cattle feces (50 kg), R1: beef cattle feces 85% (42.5 kg) of commercial broiler chicken feces + 15% (7.5 kg), R2: beef cattle feces 70% (35 kg) + commercial broiler chicken feces 30% (15 kg), R3: beef cattle feces 55% (27.5 kg) + commercial broiler chicken feces 45 ( 22.5 kg) with six replications. The results showed that the average content of organic material of R0, R1, R2, and R3, respectively 43 071% 34 075%, 27.815%, and 36 098%. Analysis of variance results showed that the average organic material are not using a commercial broiler chicken manure (R0) is higher than using each treatment compost. Results of the analysis showed uniform administration of composting grass effect is not significant (P> 0.05) on the production of fresh forage grass, presumably because it is not yet decomposed compost perfectly and the nutrient content of compost so low that has not quite provide additional nutrients needed by plants.
PROSES ADSORPSI SENYAWA LINIER ALKILBENZENE SULFONAT (LAS) MELALUI ARANG AKTIF KULIT UBI KAYU Lubis, Rosliana; Atsary, Tsara
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.547 KB) | DOI: 10.31289/biolink.v1i2.723

Abstract

This research aims was to analyze the potential of activated charcoal leather cassava in the adsorption process linear compounds alkilbenzene sulfonate (LAS) contained in the liquid waste household detergents. Stages of the study consisted of charcoal formation process of the skin of cassava through the combustion process of pyrolysis, charcoal leather activation process cassava, and the compound adsorption process linear alkyl sulfonate (LAS) contained in the liquid waste household detergents. The results showed that activated charcoal is formed from leather waste cassava LAS have the ability to adsorb the compounds contained in domestic wastewater. Treatment optimum adsorption occurs at a concentration of activated charcoal leather cassava 4 grams and a contact time of 20 minutes.
STUDI PENINGKATAN DAYA ADSORPSI KARBON AKTIF TERHADAP KADAR PEROKSIDA DENGAN PENAMBAHAN AKTIVATOR Irham, Wardatul Husna
BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Vol 1, No 2 (2015): Februari
Publisher : Program Studi Biologi, Fakultas Biologi Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.505 KB) | DOI: 10.31289/biolink.v1i2.724

Abstract

Activator that has been successfully used in the process of activation of activated carbon from coconut shell is Na2CO3, NaCl, HCl, H2SO4 and NaOH. The addition of activator in the activated charcoal will enlarge the surface area of the charcoal with open pores are closed, so as to increase the adsorption capacity of activated carbon. In the process of making activated carbon from coconut shell charcoal, carbon obtained randemen quite high, ranging from 80 to 81.74 wt% of carbon initially obtained with water content ranging from 2.2864 to 3.9489% and ash content of 2.04 to 3.28%. This means that the active carbon can be used as an activated carbon is good, because it meets the standards SII quality activated carbon. From the results obtained can be seen that the solution of HCl, NaOH and Na2CO3 can be used as an activator of activated carbon in the lower levels of peroxide. The addition of these activators can enlarge the surface area of the carbon that is by breaking the bonds of hydrocarbons or oxidizing surface molecules. Based on the research results, the best solution is used as an activator of activated carbon in adsorbing peroxide is an alkaline solution that is equal to 91.11% of the initial peroxide content.

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