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Jurnal Natural
Published by Universitas Syiah Kuala
ISSN : 14118513     EISSN : 25414062     DOI : https://doi.org/10.24815/jn
Core Subject : Science, Agriculture,
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 457 Documents
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Front Matter Jurnal Natural Vol 20 no 1, February 2020 Editor Jurnal Natural
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.v20i1.16729

Abstract

ANTIOXIDANT ACTIVITY OF N-HEXANE EXTRACT OF NUTMEG PLANTS FROM SOUTH ACEH PROVINCE Binawati Ginting; Mustanir Mustanir; Hira Helwati; Lydia Septa Desiyana; Eralisa Eralisa; Rohmat Mujahid
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.v17i1.6969

Abstract

Abstract. It has tested the antioxidant activity of n-hexane extract respective roots, bark, fruit and seed crops of nutmeg against DPPH. Each extracted by maceration method with n-hexane. The extraction of each plant nutmeg with n-hexane extract obtained yield of n-hexane respectively 8,35%; 81,5%; 11,89% and 55,63%. The result of the antioxidant activity of n-hexane extract of each plant nutmeg against DPPH with a concentration of 25 ppm, 50 ppm and 100 ppm is obtained IC50, respectively, are 0,216 ppm, 63,755 ppm, 43,998 ppm and 11,599 ppm and positive control vitamin C ( IC50 = 3,657 ppm). Vitamin C is a standard compound is more often used than butyl for very high antioxidant activity. The antioxidant activity increases from high to low at the roots, seeds, fruits and bark of plants nutmeg in a row. Based on data GC-MS chemical components of each successive extracts of roots, bark, fruit and seeds are 41, 41, 44, 43 components of secondary metabolites. The main components of each part of the plant based on data from GC-MS are a 5-Octadecanoic acid, linalool, eugenol, myristicin, methoxyeugenol. The compounds are thought to play an active role in inhibiting free radicals from DPPH. n-Hexane extract nutmeg plant potential as an antioxidant. Keywords:Nutmeg (Myristica fragrans Houtt), n-hexane extract, Antioxidant, DPPH
Daily behavior and interaction of cats (Felis catus) with humans at a canteen in IPB University LIZA MAHERA; ASTUTI LATIF; SITI SARI AZYATI; HANNY RAMADHANTI; KANTHI ARUM WIDAYATI
Jurnal Natural Volume 23 Number 1, February 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i1.26515

Abstract

Understanding feral cat behavior can be one of the aspects that is necessary for proper management and taking policy action in controlling the cat population. This study aimed to observe the daily activities of feral cats and see the correlation between the number of visitors on cat-to-human interaction at a canteen in IPB University. Observation of cat’s daily behavior was conducted by scan sampling method and cats’ interaction with humans was conducted by ad libitum sampling. Our results showed that self-care (66.27%) dominated the daily behavior of cats followed by negative behavior (20.83%) and affiliative behavior (12.9%). Correlation test showed there was a significant negative correlation between the number of visitors and frequency of affiliative behavior (p = 0.024). The number of visitors also shows a positive correlation to self-care (p = 0.034). No significant correlation between the number of visitors and negative encounters behavior (p = 0.27). The highest frequency value of cat-human interaction was approaching human (A) 28.15%, followed by vocalization (MV) 28.15% and eye contact (KM) 22.71%. Cat-human interaction behavior did not significantly correlate with the number of visitors (p 0.05). Our result implies that the feral cat’s use the canteen as a place to rest, not a place to find food and daily activities and human-cat interactions were specific for each study site. Therefore, in the management of feral cats, it was necessary to pay attention to the conditions of their respective habitats.
Microclimate-based mortality analysis of the Cibodas Botanic Gardens plant collection IMAWAN WAHYU HIDAYAT; DIDIK WIDYATMOKO
Jurnal Natural Volume 21 Number 3, October 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v21i3.21323

Abstract

Despite the routinely conducted treatment and maintenance of garden plant collection, the monthly mortality figures of the Cibodas Botanic Gardens (CBG) plant collections remain significant. It is presumed that the microclimate has a crucial influence on plant survivorship in the field. This study aimed to analyze the effect of microclimate conditions on the mortality rate of the CBG plant collection. The study was conducted by correlating the number of mortal plants with CBG monthly microclimatic conditions from 2017 to 2018. The analyzed microclimate parameters were temperature, relative humidity, precipitation, wind velocity, and solar radiation. The multiple regression modeling, t-test, and Pearson correlation test (r) were utilized to measure the level of significance of the correlation (α = 0.05). The findings were shown that the maximum wind velocity was the primary unit correlated to the number of mortality. The correlation was strong positive (r = 68.8%), and significant (p-value α). We suggested anticipating the disadvantages influences of strong wind supported by other extreme microclimate units, such as heavy rain. These events frequently caused high damage to the tree and other plant collections. These are expected to be taken into a consideration by the CBG operator and management in order to forecast and mitigate the risks of future plant collection losses.
SCREENING SINGLE RESISTANCE OF Eleusine indica ON OIL PALM PLANTATION IN PADANG LAWAS AND TAPANULI SELATAN REGENCY INDONESIA Koko Tampubolon; Edison Purba
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.v18i2.11223

Abstract

Abstract: Eleusine indica population from several estates in Padang Lawas and Tapanuli Selatan Regency, Sumatera Utara Indonesia has never been reported to be resistant to glyphosate herbicide. This study aims at distribution mapping and resistance classification of Eleusine indica glyphosate-resistant populations from several estates in Padang Lawas and Tapanuli Selatan Regency, Sumatera Utara. This research was conducted at Weed Research Center of the Faculty of Agriculture, Universitas Sumatera Utara from October 2016 to August 2017. This research used glyphosate at the recommended rate of 720 g ai ha-1 and three replications. Population ESU0 (from Politeknik Negeri Medan Ball Field) as a comparison. Data analysis using t-test at the level of 5% with IBM SPSS Statistics 20 software. The results showed 22 populations in Padang Lawas Regency have 8 populations classified as glyphosate-resistant (36.36%), 8 populations classified as developed-resistant (36.36%), and 6 populations classified as glyphosate-susceptible (27.27%). While from 6 populations in Tapanuli Selatan Regency have 5 populations classified as glyphosate-resistant (83.33%), 1 populations classified as developed-resistant (16.67%), and 0 populations classified as glyphosate-susceptible (0%). Keywords: glyphosate, goosegrass, oil palm plantation, resistance. 
Natural flavoring formulations of straw mushrooms and quality test with variations in temperature and drying time SADLI SADLI; SITTI SALEHA; RAIYAN RAIYAN
Jurnal Natural Volume 22 Number 3, October 2022
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v22i3.22885

Abstract

Mushrooms contain a substance known as glutamic acid, that produce a savory taste which has the potential to be developed into a natural flavoring. The research began with the determination of amino acid levels in three phases of harvesting straw mushrooms, namely: the egg phase, the bud phase and the adult phase, by using High Performance Liquid Chromatography which aims to determine the harvesting phase with the highest glutamic acid content. The test results of amino acid levels showed the adult phase contained the highest glutamic acid levels of 49.08 mg/g. Furthermore, the manufacture of straw mushroom flour was performed with temperature variations of 60° C and 70° C and drying times of 6, 7 and 8 hours. Then the flavoring formulation was completed  by mixing mushroom flour and other dry additives namely shallots, garlic, white pepper, tapioca flour, salt and sugar. The resulting flavoring test is conducted using a description test by assessing the sensory properties of natural flavorings, namely color, aroma, taste and texture. Based on a panelist rating, F2 (60°C, 7 hours) has the best score for color (3.88) and aroma (3.32). F5 (70°C, 7 hours) has the best score for taste (3.24) and F1 (60°C, 6 hours) has the best score for texture (2.08). The conclusion of  this study is that mushrooms have a very high potential to be deformalized into natural flavorings, as well as the natural flavoring quality parameters of mushrooms is influenced significantly by temperature parameters and drying time
The potential protective effects of malacca (Phyllanthus emblica L.) extract against doxorubicin-induced cardiotoxicity in male Wistar rats ETRINA MELINDA; ERMI GIRSANG; ALI NAPIAH NASUTION
Jurnal Natural Volume 21 Number 2, June 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v21i2.19699

Abstract

Doxorubicin as a chemotherapy agent is most widely used in cancer treatment. Long-term use at a predetermined dose has a side effect, namely cardiotoxicity. Doxorubicin-induced cardiotoxicity is considered to be caused by reactive oxygen species (ROS), which is also characterized by increasing CK-MB enzyme levels in the blood. To reduce the impact of doxorubin-induced toxicity, a study was conducted on natural antioxidant sources with cardioprotective capabilities in vivo. Phyllanthus emblica L. fruit was used as a sample for a natural source of antioxidants extracted using ethanol. Then performed a phytochemical screening of secondary metabolites contained in it. This extract was administered orally in various doses to the experimental animal Wistar rats and the induced doxorubicin to these animals. The CK-MB enzyme levels were measured, and the heart organ histopathology test was performed. The results of this study indicate that P. emblica L. fruit extract contains alkaloids, tannins, flavonoids, terpenoids, phenolics, and triterpenoids compounds. Extract treatment at a 400 mg/kg BW dose showed the best reduction in CK-MB levels with great improvements in regular arrangement and shape of myocardial muscle cells of cardiac tissue. The sample extract at a 400 mg/kg BW dose showed remarkably decreasing of CK-MB great improvements of heart tissue on doxorubicin-induced cardiotoxicity. This study showed the potential protective effect of P. emblica L. against doxorubicin-induced cardiotoxicity.
IMMUNOSTIMULATORY EFFECT OF METHANOL EXTRACT OF FLAMBOYANT LEAF [Delonix regia (Boj. ex Hook.) Raf.] IN MICE Kartini Eriani; Ainsyah Ainsyah; Rosnizar Rosnizar; Yunita Yunita; Ichsan Ichsan; Al Azhar
Jurnal Natural Volume 18, Number 1, February 2018
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v18i1.9830

Abstract

Abstract. Flamboyant [Delonix regia (Boj. ex Hook) Raf.] leaf contains flavonoid compounds that are expected to have immunostimulatory effect. This research was done to determine the effect of flamboyant leaf extract on immune response by accessing the activity of immune cells and capability test the extract as immunostimulant in mice. Leaf extraction was done by maceration using methanol in the Laboratory of Biology of Chemistry Department, Faculty of Mathematics and Natural Sciences of Syiah Kuala University whereas animal treatment and testing were carried out Micro-technique Laboratory of Biology Department of the same faculty. This research used 20 male mice strain Swiss-Webster aged 7-8 weeks were randomly assigned to 4 treatment groups with five replications each. Group 1 (P0) was untreated control; group 1-3 were mice administration flamboyant leaf extract 250 mg/kg BW (P1), 500 mg/kg BW (P2), and 750 mg/kg BW (P3) per oral. The treatments were given for 14 days after one week of adaptation period. Blood samples were collected before and after extract treatment and used for leukocyte count analysis. Phagocytosis activity was accessed by carbon clearance assay on day 15. At the end of the study, all mice were sacrificed for spleen weight analysis. Data obtained was analyzed by Analysis of Variance followed by Tukey test (Leukocyte count and spleen weight) or regression analysis (carbon clearance). The results showed a flamboyant leaf extract administration resulted in increased leukocyte counts that were significantly different (p0.05) between treatment groups.  Phagocytosis test indicated the extract had moderate to strong immunostimulatory effect whereas spleen weight analysis did not show any difference among treatment groups. In conclusion, flamboyant leaf methanol extract was able to increase immune cells and had potential immunostimulatory activity in mice.Keywords: Delonix regia, immunostimulant, leukocytes, lymphocyte proliferation.
Composition and similarity of vegetation types in the Mount Seulawah Agam geothermal area, Aceh Besar District DAHLAN DAHLAN; MUHAMMAD DOUDI; SAIDA RASNOVI; DALIL SUTEKAD; MUSLICH HIDAYAT
Jurnal Natural Volume 23 Number 2, June 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v23i2.31989

Abstract

The Mount Seulawah Agam area is an active volcanic area that has an impact on the emergence of symptoms of volcanism. Such environmental conditions will cause the vegetation that grows in the area to be unique and not commonly found in other areas. Apart from that, the area is still relatively natural and has not experienced much disturbance by human activities. This study aims to determine the composition and similarity of vegetation types in the geothermal area of Mount Seulawah Agam, Aceh Besar District. Data collection in the field was carried out using the multiple square method which was placed in a stratified sampling based on the specified soil temperature zone. Each zone was laid out in 4 square plots in a systematic random manner. Each plant contained in the observation plot is recorded in the name of the plant species using a flora identification book, and the number of individuals of each type is recorded. Data analysis was carried out using the Important Value Index analysis, and the Sorenson Similarity Index. The results showed that there were 65 species from 611 individual plants identified starting from the growth rate of seedlings, sapling, poles, and trees. The similarity index of plant species at each growth stage in the Seulawah Agam geothermal area, Aceh Besar District generally has different species similarity in each observation zone, that is, the average is below 50%. This condition indicates that there are significant differences in plant structure at various growth rates in each zone
THE DIFFERENT MAGNETIC RESULTS OF ANEMI AND PPM MEASUREMENTS ON THE BURIED REMAINS OF A 13TH CENTURY FORTRESS Muhammad Yanis; Marwan Marwan; Bukhari Bukhari; Nazli Ismail
Jurnal Natural Volume 16, Number 2, September 2016
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jn.v16i2.5018

Abstract

This study aimed to evaluate the different magnetic results of an electromagnetic induction with proton magnetometer measurements on an archaeological site. The electromagnetic induction allows measuring both the apparent magnetic susceptibility in part per thousand (ppt) and the apparent electrical conductivity in millisiemens (mS/m). A proton magnetometer measures the total magnetic intensity in nanotesla (nT), caused by the induced and remanent magnetisations. An archaeological site where historical documents indicated the presence of a 13th century fortress that built by Lamuri Sultanate was selected as a test area. The measurement were conducted by divided the study area into 10 profiles.Some standard data processing have been applied to the measured data. The result of the first survey with electromagnetic induction showed low magnetic anomalies in the buried remains of Lamuri fortress. The similar value are shown as well by low magnetic field intensity in magnetometer measurement.

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