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Jurnal Natural

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Published by Universitas Syiah Kuala

ISSN : 14118513 EISSN : 25414062 DOI : https://doi.org/10.24815/jn

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Energy Immunology & microbiology Neuroscience Physics

Jurnal Natural (JN) aims to publish original research results and reviews on sciences and mathematics. Jurnal Natural (JN) encompasses a broad range of research topics in chemistry, pharmacy, biology, physics, mathematics, statistics, informatic and electronic.

Arjuna Subject : Matematika - Matematika (Lain-Lain)

Articles 235 Documents

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Vegetation analysis and plant diversity in Pinus Jantho Forest (PJF) nature reserve, Aceh Besar HILMINA ITAWAMERNI; SAIDA RASNOVI; ZUMAIDAR ZUMAIDAR
Jurnal Natural Volume 21 Number 1, February 2021
Publisher : Universitas Syiah Kuala

Pinus Jantho Forest (PJF) Nature Reserve has unique characteristics and distinctive ecosystem that plays an important role in the preservation of germplasm and the protection of natural resources. The sustainability of the PJF Nature Reserve is strongly determined by vegetation of its constituents. Therefore, an effort is needed to help its management properly, one of which is by knowing the diversity of plants that make up the community in PJF Nature Reserve. The purpose of this research is to analyze the composition and diversity of plant species in PJF Nature Reserve. Data collection and sampling were done using multiple square method. The plots were laid out by systematic sampling. PJF Nature Reserve composed of 111 species from 46 family. The seedling and understorey have the highest number individuals (1028 in total). Then there are 240 individuals at sapling level, 108 individuals at pole, and 72 individuals for tree. The Euphorbiaceae family has the largest number of species (11 species). The highest Important Value Index (IVI) for seedlings and understorey, sapling and pole, and tree respectively were Chloranthus elatior (11.09%), Piper aduncum (21.90% and 19.32%), and Pinus merkusii (25.52%). The Diversity Index indicates a high level of plant species diversity (3.25-3.63).

VALIDATION OF ULTRAVIOLET SPECTROPHOTOMETRY METHOD FOR DETERMINATION OF MEFENAMIC ACID LEVEL IN SUSPENSION DOSAGE FORMS Nerdy Nerdy
Jurnal Natural Volume 17, Number 1, March 2017
Publisher : Universitas Syiah Kuala

Abstract. Mefenamic Acid is one type of nonsteroidal antiinflammatory drug that works to relieve pain by blocking an enzyme that produces prostaglandins. The quality requirements that must be met by pharmaceutical preparations are levels contained must meet the level requirement as listed in the Indonesian Pharmacopoeia or other standard books. The purpose of this study was to conduct a validation test of ultraviolet spectrophotometry methods for determination of the Mefenamic Acid level in the suspension preparation. The sample consisted of three suspensions preparation under the trade name obtained from a pharmacy in the Medan city. The solvent used is sodium hydroxide (NaOH) 0,1 N solution and the measurement was done at a wavelength of 286 nm. Validation parameters determined were Accuracy, Precision, Linearity, Range, Limit of Detection and Limit of Quantitation. The results of the determination of the Mefenamic Acid suspension preparation under the trade name Pondex® was 100,39±0,21%, trade name Omestan® was 99,98±0,33% and trade name Novastan® was 103,21±0,83%. All the suspension preparations were determined meet the general level requirement, that contain not less than 90,0% and not more than 110,0% of the amount stated on the label. The results meet the requirements of the validation test of analysis methods with the parameter percent recovery 100,08% for accuracy, relative standard deviation 0,04% for precision, the correlation coefficient 1,0000 for linearity, range 8 μg/mL to 12 μg/mL, limit of detection limit 0,0118 μg/mL, limit of quantitation 0,0356 μg/mL. Keywords: Validation, Spectrophotometry, Determination, Suspension, Mefenamic Acid

Reference on Thermophysical Properties: Density and Viscosity of Several Gases by Using Macro Excel (RSSDFIUSK vs. 1) Elin Yusibani
Jurnal Natural Volume 15, Number 1, March 2015
Publisher : Universitas Syiah Kuala

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A source code for calculating reference on thermophysical properties: density and viscosity for several gases (nitrogen, helium, hydrogen, argon and air) has been developed under Visual Basic for Applications (VBA) programming in MS Excel (as a macros). Selected density and viscosity equations have been chosen as a basic equation in the VBA programming as a user-defined function. This macro is very useful for engineers and researchers due to enhance their experimental and/or theoretical studies.

Antithrombotic potential of ethanol extract from Gardenia jasminoides leaves planted in Aceh AZIZAH VONNA; NUZUL HIDAYATI; SURYAWATI SURYAWATI
Jurnal Natural Volume 20 Number 1, February 2020
Publisher : Universitas Syiah Kuala

Therapheutic agents from plants are believed to be effective, sustainable and readily available which stimulate researchers to explore various activities of plants. This study is aimed to investigate the activity of Gardenia jasminoides (G. jasminoidesleaves in enhancing the length of bleeding time and clotting time thus can be optimized to be a potential thrombolytic agent in the future. The animal were classified into 5 groups included 3 treatment groups receiving G. jasminoides leaves (GJL) extract at dose 100, 200, 300 mg/kg BW, 1 positive control receiving aspirin 0.208 mg/20 g and 1 negative control. Mice treated with GJL extract delayed the clot formation with the highest dose showed effects as strong as positive control.

IDENTIFY CONNECTIVITY GRAPH USING A MODIFIED PRÜFER’S ALGORITHM LABELLING TREES Al Aiyub; Mahyus Ihsan; Rahma Zuhra
Jurnal Natural Volume 13, Number 1, March 2013
Publisher : Universitas Syiah Kuala

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Connectivity of graph easily can be given when we see it with the bare of eyes, but needs an algorithm that can assure the connectivity in computerization. Some graphs require the connectivity in their definitions, such as Hamiltonian graph, Eulerian graph and tree. The connectivity become important in order to solve any of graphs' problems by using computer technology. Most of the algorithm cannot run perfectly, if the graph which is given was not connected. It is happened to Djikstra and Prufer graphs for example. However, this study will provide the solution by modifying Prufer algorithm to show the connectivity in the graph.

THE EFFECT OF ARBUSCULAR MICHORRIZA FUNGI AND ORGANIC FERTILIZER ON THE GROWTH OF SUNFLOWER (HELIANTHUS ANNUUS L.) ON CRITICAL LAND OF FORMER IRON ORE MINE IN LHOONG - ACEH BESAR Suwarniati Suwarniati; Ulia Hanum; muslim muslim
Jurnal Natural Volume 18, Number 2, June 2018
Publisher : Universitas Syiah Kuala

The study determines the effect of arbuscular mycorrhiza fungi (AMF) and organic fertilizer on sunflower growth (Helianthus annuus L.) in former iron ore mine in Lhoong, Aceh Besar. The Randomized block design is 2×3 factorial with 4 replications was used. The first factor: Without Mycorrhiza and Mixed Mycorrhiza. The second factors were Without Fertilizer, Manure, and Guano. The results showed that at α = 5% variation analysis, AMF had very significant effect on plant height in 10 d After Planting (DAP), leaf number 50 DAP, fresh weight of top-trimmed, and AMF colonized roots. Furthermore, it showed a significant effect on plant height 40 and 50 DAP, leaf number 20, 40 DAP and dry weight of top-trimmed. Fertilizer were significantly affected on plant height in 10 and 20 DAP, leaf number 50 DAP and fresh/dry weight of the top-trimmed. It showed a significant effect on plant height 30 DAP and leaf number 40 DAP. Mixed Mycorrhiza and Guano showed the best results. The interaction between AMF and fertilizer had a significant effect on plant height at 50 DAP and fresh weight of the top-trimmed. Mixed Mycorrhiza and Manure showed the best results on 50 DAP with increasing in plant height, while Mixed mycorrhiza and Guano increased fresh weight of the top-trimmed.Keywords: arbuscular mycorrhiza fungi (AMF), Helianthus annuus L., critical land, organic fertilizer, sunflower growth.

VALIDATION METHOD OF ULTRAVIOLET SPECTROPHOTOMETRY DETERMINATION OF CONTENT IN AMBROXOL HCl TABLET Tedy Kurniawan Bakri; Fathur Rahman Harun; Misrahanum .; Sadli .
Jurnal Natural Volume 15, Number 2, September 2015
Publisher : Universitas Syiah Kuala

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Ambroxol Hydrochloride (Ambroxol HCI) is one of mucolytic drugs that is commonly used to dilute thesecretion within the respiratory tract. This process is completed by lowering the viscosity of mucopolysaccharides, in which its characteristic which is mucolytic within the respiratory tract. This research aims to conduct a validation of the UV spectrophotometry method in determining the level of ambroxol HCI in tablets. This methos is also used to obtain the level of amboxol HCI in tablets that are available in the market. The parameters of the validation are accuracy, precision, limit of detection (LOD), and limit of qualification (LOQ). The samples of ambroxol HCI was consisted of one (1)generic tablet and five (5) from branded tablets from the market. The results of the validation tested gave an accuracy of 99.58% in recovery percentage and Relative Standard Deviation (RSD) of 1.14%. These results showed that this method gave good precision and exactness, with the limit of detection (LOD) 0,1505 µg/ml andlimit of quantification (LOQ) 0,5018 µg/ml. These numbers are obtained from tablets with brands namely Lapimuc® (PT. Lapi) with its level of ambroxol HCI of 99,71 ± 0,64%; Epexol® (PT. Sanbe) with levels of ambroxol HCI of 99,78 ± 0,52%; Mucera® (PT. Otto) with levels of ambroxol HCI of 99,76 ± 0,5239%; Mucos® (PT. Meprofarm) with levels of ambroxol HCI of 99,8 ± 0,75%; Mucopect® (PT. Boehringer Ingelheim) with levels of ambroxol HCI of99,5 ± 0,70%; and finally a generic tablet with the of ambroxolHCl( PT. Phapros) of 99,6 ± 0,59%. All tablets used within this research have conform to the general levels of amboxol HCI in a tablet which is not less than 90.0% and not more that 110% from the number written in the regulation.

Chemical Activation of Bentonite Clay and Its Adsorption Properties of Methylene Blue Susilawati Susilawati; Nurul Alam Naqiatuddin
Jurnal Natural Volume 14, Number 2, September 2014
Publisher : Universitas Syiah Kuala

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Study on adsorbent properties of bentonite such as optimum activation condition, concentration concentration effect of sulphuric acid, activation temperature and activation time on decolorization of methylene blue have been investigated in this paper. The study was started by activation of bentonite with sulfuric acid. The data was analysis by statistical method via Least Significant Difference (LSD) test. The optimum condition of adsortion showed that the concentration of activating agent (sulphuric acid) was 20%, activation temperature at 110 ºC and activation time was 30 minutes. At this optimum condition, methylene blue was absorbed by bentonite with 93.30% yield.

ISOLATION AND ACTIVITY ANTIOXIDANT TEST OF COCOA POD HUSK ETHYL ASETAT EXTRACTS (Theobroma cacao L) Binawati Ginting; Ilham Maulana; Nurdin Saidi; Syarifah Yanti Astryna
Jurnal Natural Volume 19 Number 2, June 2019
Publisher : Universitas Syiah Kuala

Isolation and testing of antioxidant activity with1,1-difenil-2-pikril hidrazil (DPPH) from ethyl acetate extract ofcocoa pod husk(Theobroma cacao L) has been carried out.Theobroma cacaoextract (TCE) showed highly strong antioxidant activity with IC50 = 8,75 ppm and vitamine C = 6,07 ppm as positive control. Isolation of the active components of TCE by column chromatography using silica gel absorbent 60 mesh ASTM (Merck 774) and the eluent n-hexane: ethyl acetate (9:1), obtained 7 fraction combined (TCE 1 to TCE 7). There are 6 combined fractions having the potential as antioxidants, namely TCE 2 to TCE 7 with a range of IC50 (6,46 ppm – 91,8 ppm). TCE 2 fraction has a very strong antioxidant activity with IC50 = 6,46 ppm. Separation of TCE 2 fraction on silica column chromatography obtained 4 combined fractions (TCE 2.1 to TCE 2.4). The test results of antioxidant activity showed that TCE 2.4 had very strong activity with IC50 = 42,7 ppm.For the TCE 2.2 fraction, preparative TLC was carried out using eluent n-hexane: ethyl acetate (9.5: 0,5) obtained by TCE 2.2.4 isolate with a melting point of 114-120 °C and was a steroid class.

BIOLOGY OF PAPAYA MEALY BUG Paracoccus marginatus (HEMIPTERA: PSEUDOCOCCIDAE) IN CASSAVA (Manihot utilissima Pohl) Husni Husni; Nur Pramayudi; Mutia Faridah
Jurnal Natural Volume 12, Number 2, September 2012
Publisher : Universitas Syiah Kuala

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The biology of papaya mealy bug (Paracoccus marginatus) in the cassava (Manihot utilissima) had been studied at the Plant Protection Laboratory of the Agriculture Faculty of Syiah Kuala University. The purpose of this study was to investigate the biology of P. marginatus on the cassava leaves. The result showed that the insect development time on cassava leaves were: 8.0 ± 0.79 days for egg stage, 5.3 ± 0.67 days for first instar nymph, 5.5 ± 0.84 days for the second instar of female nymph, 5.3 ± 0.50 days for the second instar of male nymph, 5.4 ± 0.51 days for the third instar of female nymph, and 3.6 ± 0.52 days for the third instar of male nymph (pre pupa), respectively. The development time of IV instar of male nymp (pupa) was 56,6 ± 0,58 days. The development time of the adult stage for female and male progeny were 14 ± 1,24 days and 43,3 ± 0,58 days. The life cycle of female and male were 31,8 ± 3,83 days and 27,8 ± 1,87 days, and the average number of eggs in each ovisac was 413, respectively.

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Suhartono

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suhartono@usk.ac.id

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Journal Mail Official
jurnal.natural@fmipa.unsyiah.ac.id

Editorial Address
Block A 2nd Floor FMIPA USK Jl. Tegk. Syech Abdurrauf No. 3, Banda Aceh, 23111, Indonesia

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Kab. aceh besar,

Aceh

INDONESIA