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Jurnal Natural
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Articles 155 Documents
ANTIFUNGAL ACTIVITY OF ESSENTIAL OILS SOME PLANTS IN ACEH PROVINCE AGAINST CANDIDA ALBICAN Ginting, Binawati
Jurnal Natural Volume 12, Number 2, September 2012
Publisher : Universitas Syiah Kuala

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Abstract

It has been tested antifungal essential oils from the leaves of Wedelia biflora, leaves of Citrus hystrix Dc, leaves of Ocimum basilicum L., and flower Caesalpinia pulcherima L. at concentrations of 10, 5 and 1% against C. albicans. using the Kirby-Bower. The antifungal activity of essential oils the leaves of Citrus hystrix Dc with a concentration of 10%, 5% and 1% respectively show the average of the inhibition zone by 24.5 mm, 23 mm and 10 mm. Essential oils leaves of Ocimum basilicum L at concentrations of 10%, 5% and 1% respectively had average inhibition zone of 11.5 mm, 10.5 mm and 6 mm. leaves of Ocimum basilicum L., and flower Caesalpinia pulcherima L showed no inhibition of the C. Albicans.
ACTIVITY TEST OF ABRUS PRECATORIUS L. LEAF EXTRACT AGAINST CLINICAL STREPTOCOCCUS PNEUMONIA GROWTH* Misrahanum, Misrahanum; Puteri, Cut Intan Annisa; Yulvizar, Cut
Jurnal Natural Volume 17, Number 1, March 2017
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v17i1.7260

Abstract

Abstract. Saga (Abrus precatorius L.) have been used by Indonesian community as a traditional medicine. The research aims to determine the activity of the methanol extract of saga leaves to inhibit the growth of clinical Streptococcus pneumoniae growth. Inhibition tests was done with casting cup method. The results showed that the methanol extract of saga leaves at a concentration of 37,5; 50; 62,5; 75 and 87,5 mg/mL formed growth inhibition zone of clinical S. pneumoniae with consecutive average of 0,5; 1,75; 2,82; 4,00; and 4,82 mm. Based on the results of the research can be concluded that the methanol extract of saga leaves had activity in inhibiting the growth of clinical S. pneumoniae isolates with low category.  Key words: Abrus precatorius L., Clinical Streptococcus pneumoniae, Methanol extract*Judul ini telah dipresentasikan pada Seminar Nasional: Indonesian Students Conference on Science and Mathematics(ISCSM) 11-12 November 2015, Banda Aceh Indonesia
THE CHARACTERIZATION OF SIMPLISIA, ISOLATION AND IDENTIFICATION OF CHEMICAL CONSTITUENS FROM THALLUS TURBINARIA DECURRENS BORY Sari, Irma
Jurnal Natural Volume 15, Number 2, September 2015
Publisher : Universitas Syiah Kuala

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Abstract

The characterization of simplisia, phytochemical screening, extraction, isolation and identification of chemical constituens  from thallus Turbinaria decurrens Bory have been carried out. The examination of simplisia characteristics gave the water soluble extract the value of 10.59%, ethanol soluble extract valued at 0.93%, total ash valued at 15.64%, the acid insoluble ash value 0.79% and the water content valued at 8.66%. The result of phytochemical screening showed that there was triterpens/steroids present. The extraction process was carried out by percolation and then was separated by liquid vacum column chromatography. Then by preparative thin layer chromatography isolate B1 was obtained. The analysis of isolate B1 by infra red spectrophotometry showed hydroxyl, aliphatic C-H bond, C=O bond, double bond of C=C, C=O bond, C=H bond of CH3 and CH2, were present. Ultra violet spectrophotometry exhibited a maximum absorption at 242 nm and mass spectrometric fragmentation pattern exhibited that the molecular weight of isolate B1 was 394, it was suspected ergosta -4,7,22 ?trien -3 one.
APPLICATION OF MAGNETICS METHOD TO MAPPING THE GEOTHERMAL SOURCE AT SEULAWAH AGAM AREA Asrillah, Asrillah; Marwan, Marwan; Rusydy, Ibnu; Nugraha, Gartika Setiya
Jurnal Natural Volume 14, Number 2, September 2014
Publisher : Universitas Syiah Kuala

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Abstract

Magnetic method had been employed at Seulawah Agam area in term of unveiling the potentially geothermal source. This method was carried out locally in both the geothermal filed of Heutsz?s Crater and Cempaga?s Crater where the locations are in Seulawah Agam slope which is included in Aceh Besar District. Geologically, the area is mainly controlled by volcanic mudflow and Lam Teuba?s rocks consisting of breccia, pumice and tuff and their age are from Tersier to Resen Period. The deployed equipment consisted of Magnetometer GSM-19T, Proton Sensors, Aluminum Stick, Connection Cable, GPS Antenna, Compass, and Watch. Portable GPS (Global Positioning System), Navigation type (map of the survey area), and complemented by the other technical equipment, such as handy talky, umbrella, pens and notes of observed data. This study was done by following two steps. At first, the base station was established as a reference point for all magnetic data of measurements. Furthermore, recording magnetic data at each point by repeating three times until the last point by following the looping pattern as pathway of measurement both in Heutsz?s crater whose nine point recordings and in Cempaga?s crater whose seventeen points was consecutively done. The data were simply processed by using Microsoft excel that can just plot the magnetic anomaly and interpreted qualitatively being preliminary research. The result showed that at the north pathway had high magnetic anomaly of rocks located at B6 point and it was assumed as the area having the economically mineral in fracture zones. The rocks with low a anomaly value were obtained at ?F125 BR is suggested as the thermal sources while at the South pathway from observing station till the Cempaga?s crater was obtained the geological structure as the Sumatran Fault of Aceh?s segment at CK4 point and this finding showed similar correlation with the result of gravity survey at same pathway published in another paper. In conclusion, this method effectively showed that the Seulawah Agam has potency as thermal source.
DISTRIBUTION MAPPING OF GLYPHOSATE-RESISTANT ELEUSINE INDICA IN SERDANG BEDAGAI REGENCY Tampubolon, Koko; Purba, Edison; Basyuni, Mohammad; Hanafiah, Diana Sofia
Jurnal Natural Volume 18, Number 3, October 2018
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v18i3.11201

Abstract

The presence of Eleusine indica from oil palm plantations in Serdang Bedagai Regency has never been overall reported glyphosate-resistant. This study aims to distribution mapping and resistance classification of E. indica population to glyphosate herbicide of oil palm plantations in Serdang Bedagai Regency. This research was conducted on Weed Research Center Land in Faculty of Agriculture, Universitas Sumatera Utara in October 2016 to August 2017. This research used glyphosate herbicide with the recommended dose at 720 g ai ha-1 and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data analysis using IBM SPSS Statistics 20 software. The results showed there E. indica population classified as glyphosate-resistant amount 89.36% (42 population), classified as glyphosate-resistant moderate amount 10,64% (5 population) and there is no population glyphosate-susceptible on oil palm plantations in Serdang Bedagai Regency of recommended dose at 720 g ai ha-1.
IDENTIFICATION OF SUBSURFACE STRUCTURE USING SEISMIC REFRACTION METHOD AT JANTHO ACEH BESAR Zikrilah, Muhammad; Sugiyanto, Didik; Rusydy, Ibnu
Jurnal Natural Volume 16, Number 2, September 2016
Publisher : Universitas Syiah Kuala

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An identification of subsurface structure in the surrounding area of Aceh Besar regent?s office was conducted by using seismic refraction method. The aims of this study are to determine the velocity value between layers in order to describe thesubsurface layer model, to identify the types of rocks on each layer, and to analyze the depth of bedrock layer located in the subsurface. There are 4 tracks with spaces in between each geophone, and on each track, with the width of 3 m. The total spread on the track is 72 m and the farthest shoot point is 36 m from the farthest geophone point.
POTENTIAL SIDE EFFECTS OF MEDICINE ON PATIENTS WITH TUBERCULOSIS FIXED-DOSE COMBINATION IN DR. PIRNGADI HOSPITAL, MEDAN DASOPANG, EVA SARTIKA; HASANAH, FENNY; FAUZIAH, IDA; SALMAN, SALMAN; BAKRI, TEDY KURNIAWAN
Jurnal Natural Volume 20 Number 1, February 2020
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v20i1.15285

Abstract

Tuberculosis is caused by the bacterium Mycobacterium tuberculosis, which by only using a few new antibiotics, can kill the bacteria. Tuberculosis treatment has several stages, namely intensive and advanced stages. Compliance with the use of OAT is an imported factor in the success of TB treatment. The use of many drugs can cause side effects that result in patients stopping treatment when it creates the TB treatment process to fail. Improved adherence can do by using a fixed-dose combination OAT. In the intensive phase, the patient will get a fixed-dose combination containing a mixture of four antibiotics. The purpose of this study is to evaluate the potential side effects that occur during fixed-dose combination OAT treatment at an intensive stage and see the level of compliance of patients taking TB drugs. Observational sampling in TB patients was taking OAT at an acute stage by looking at side effects that arise during treatment and then analyzed using statistics and algorithm Naranjo. The results showed the most common potential side effects for fixed-dose combination OAT in the intensive stage were itching, headache and nausea with a percentage of 72% each, joint pain 45%, stomach pain 36.4%, lack of appetite and rashes 27.3% each and reddish color in the urine 18.2%. The results of the analysis using Naranjo logarithm obtained results eight, which means the side effects might cause due to the use of the drug. The results of patient compliance achieved a 100% compliance rate
ANTIDIABETIC ACTIVITY OF LEAVES ETHANOL EXTRACT CHROMOLAENA ODORATA (L.) R.M. KING ON INDUCED MALE MICE WITH ALLOXAN MONOHYDRATE Marianne, Marianne; Lestari, Dwi; Sukandar, Elin Yulinah; Kurniati, Neng Fisheri; Nasution, Rosnani
Jurnal Natural Volume 14, Number 1, March 2014
Publisher : Universitas Syiah Kuala

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Chromolaena odorata or Tekelan has been used traditionally to cope with diabetes mellitus, but the scientific evidence as antidiabetic agent has not been previously reported. Therefore, it is necessary to test the antidiabetic activity using ethanol extract of the tekelan leaves in male mice induced by alloxan. Mice were induced intravenously by alloxan dose of 55 mg/kg bw. After 7 days, mice were diabetic ( KGD 200 mg/dL ) and were grouped into 6 groups: negative control group (only treated with CMC - Na) , positive control group (glibenclamide 0.45 mg/kg bw) and the 4 other groups were given ethanol extract of Tekelan leaves at doses of 5 , 25 , 125 and 250 mg/kg bw. Dosage administered for 28 days and blood glucose levels was checked every 7 days using a glucotest. Data were analyzed by one-way analysis of variation at 95% confidence level. Ethanol extract of tekelan?s leaves  at doses of 5 , 25 , 125 and 250 mg/kg bw can lower blood levels  from day 7 to day 28 and was significantly different compared to the negative control group ( p 0.05). Ethanol extract of tekelan?s leaves at doses of 5 , 25 , 125 and 250 mg/kg bw showed antidiabetic activity in alloxan-induced mice.
DESAIN OF ACOUSTIC SANDWICH COMPOSITE FROM FOAM CONCRETE AND PALM FIBER Devya, Devya Kartika; Mursal, Mursal; Djalil, Zulkarnain
Jurnal Natural Volume 18, Number 2, June 2018
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v18i2.9706

Abstract

The purpose of this research were to investigate the influence of palm fiber composition and the number of hole cavities was varied with design Acoustic Sandwich Composite on sound absorption of acoustic panel. Acoustic panel were made of palm fiber as core and foam concreate as skin upper layer and bottom layer where there is a hole cavity on skin upper layer. Composition and the number of hole cavities was varied from 1 to 3 kg and the number of hole cavities from 25 to 81 hole. Sound absorption measurement was conducted by using reverberation room method based on ISO-354 (2003) with pink and white noise as sound source.The results showed that sample thickness affect acoustic absorption value effectively shifted at low frequencies, as in this research the best sound absorption occurs in panel with composition palm fiber most widely 3 kg, but coeffesient absorpsi value effective is in the range 250 Hz and use the number of hole cavities at skin upper layer of each sample effectively cause sound absorption coeffisient value increased, for both pink and white noise from sound source.Keyword : acoustic panel, foam concrete, palm fiber, sandwich composite, and absorption coefficient
MIXED MATRIX MEMBRANE ADSORBERS FOR GLYCEROL REMOVAL IN BIODIESEL Saiful, Saiful; Pratiwi, Febrina; Maulana, Ilham; Ramli, Muliadi
Jurnal Natural Volume 12, Number 1, March 2012
Publisher : Universitas Syiah Kuala

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Mixed matrixmembrane (MMM) adsorbers systems function as short and wide chromatographic columns in which the adsorptive packing consists of one or more micro-porous membranes. This study reports the use of membrane adsorbers for glycerol capturing and removing in crude biodiesel. The MMM are prepared by a wet phase inversion method. Magnesol were incorporated as active sites in the membrane. Matrix support of the membrane was prepared from chitosan.The optimum compositions of the adsorptive membranes were 3 % chitosan, 15% DMF and 60% loading adsorbent. The porosity of these membranes was 34 % and swelling degree was 52 %. The membrane clean water flux was 225 Lm-2h-1 at a trans-membrane pressure of 2.5 bar. The adsorptive membrane has been demonstrated to reduce the concentration of total glycerol in crude biodiesel. The amount of glycerol in biodiesel can be reduced 69.93 % in 60 minute which is agreed to value of SNI quality standards. The membrane adsorber can be regenerated and reused for biodiesel purification. The regenerated membrane can be reused with maintaining the high adsorption capacity. The methanol was better than ethanol to regenerate the magnesol membrane. The Magnesol membrane will be a new alternative method for biodiesel purification.Mixed matrixmembrane (MMM) adsorbers systems function as short and wide chromatographic columns in which the adsorptive packing consists of one or more micro-porous membranes. This study reports the use of membrane adsorbers for glycerol capturing and removing in crude biodiesel. The MMM are prepared by a wet phase inversion method. Magnesol were incorporated as active sites in the membrane. Matrix support of the membrane was prepared from chitosan.The optimum compositions of the adsorptive membranes were 3 % chitosan, 15% DMF and 60% loading adsorbent. The porosity of these membranes was 34 % and swelling degree was 52 %. The membrane clean water flux was 225 Lm-2h-1 at a trans-membrane pressure of 2.5 bar. The adsorptive membrane has been demonstrated to reduce the concentration of total glycerol in crude biodiesel. The amount of glycerol in biodiesel can be reduced 69.93 % in 60 minute which is agreed to value of SNI quality standards. The membrane adsorber can be regenerated and reused for biodiesel purification. The regenerated membrane can be reused with maintaining the high adsorption capacity. The methanol was better than ethanol to regenerate the magnesol membrane. The Magnesol membrane will be a new alternative method for biodiesel purification.

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