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Jurnal Natur Indonesia

JN
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Published by Universitas Riau

ISSN : 14109379 EISSN : 25030345 DOI : https://doi.org/10.31258/jnat

Core Subject : Science, Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.

Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)

Articles 306 Documents

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Kandungan Logam Berat Kadmium (Cd) dan Tembaga (Cu) pada Sedimen dan Siput Strombus Canarium Pantai Pulau Bintan Nasution, Syafruddin
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

This research was conducted at North Bintan island waters. The sample of sediment and snail S. canarium hasbeen taken from four locations those were Busung, Lobam, Sebung, and Tanjung Bakau coastal waters. Analysisof metal concentrations both in sediment and snail conducted by using Atomic Absorption Spectrophotometer(AAS)Solar 969 AA. The result showed the highest concentration of Cadmium (Cd) and Cuprum (Cu) in sediment whichwere 0.51 ppm (Cd) and 13.22 ppm (Cu). While the highest concentration of these metals in snail S. Canarium wichwere 0.56 ppm (Cd) and 8.42 (Cu), indicating that the concentration in both sediment and snail still below thenormal threshold. It could be concluded that the Bintan Coast has not been polluted but lightly contaminated.

Dua Dimer Resveratrol dari Kulit Batang Shorea parvifolia (dipterocarpaceae) Rosyidah, Kholifatu; Juliawati, Lia Dewi; Syah, Yana Maolana; Hakim, Euis Holishotan; Achmad, Sjamsul Arifin; Makmur, Lukman
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Two resveratrol dimers, (-)-ampelopsin F dan (-)-laevifonol were isolated from aceton extract of the stem bark ofShorea parvifolia. The structures of these compounds were determined based on their spectroscopic data includingspectroscopy ultra violet (UV), infra red (IR), nuclear magnetic resonance (1H-NMR, 13C-NMR) and also were comparedto the reported data.

Toksisitas Produk Ekstrasellular (ECP) Streptococcus agalactiae pada Ikan Nila (Oreochromis niloticus) Hardi, Esti Handayani; Sukenda, Sukenda; Harris, Enang; Lusiastuti, Angela Mariana
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

This research aimed to know the toxicity of extracellular products (ECP) of Streptococcus agalactiae was tastedin cultured Nile tilapia (Oreochromis niloticus). Streptococcus agalactiae had two haemolytic types: β-haemolyticand non-haemolytic type. Toxicity test of ECP to know the virulancy factor of S. agalactiae was still limited. It wasfound that after tested on 15 fish weighing 15 g through intraperitoneal injection 0,1 ml/fish, both bacteria causedchanges in swimming pattern, palatability, external and internal anatomy macroscopically and microscopically.Extracellular products of S. agalactiae non-haemolytic type (BHIA and BHI 24 h) and β-haemolytic type (BHI 72 h)caused mortality 12 hours after injection and the mortality continued till day 7 th of culture. Whirling happened 96hours after injection with ECP S. agalactiae β-haemolytic type (BHIA 72 h incubation) whereas injection with ECP(BHI 24 h) on 72 h after injection and continued untill day 7 th. Behavior disease signs caused by S. agalactiaeoccured on eyes. There were opacity, purulens, eye shrink, lateral and bilateral exopthalmia and haemorrhage oninfected-fish. Silver staining of sodium dodecyl sulphate-polyacrylamide gels to S. agalactiae revealed thatpredominant 51.8-69.6 kDa bands were present in BHIA ECP fraction. The 69.6 kDa was absent from the BHI ECP.Total protein on non-haemolytic S. agalactiae ECP are 28.18 ppm on BHIA medium and 13.64 ppm on BHI medium.Whereas β-haemolytic S. agalactiae ECP are 2.73 ppm on BHIA medium and 8.18 ppm on BHI medium. Concentrationof protein in ECP was one of factor that caused non-haemolytic S. agalactiae more virulent than β-haemolytic type.The conclusion from the research that ECP was virulent factor on β-haemolytic and non-haemolytic S. agalactiaein fish which caused changes in behavior disease signs.

Kongruensi Unsur Idempoten Ortogonal dalam Aljabar Insidensi Finitary Carnia, Ema; Wahyuni, Sri; Irawati, Irawati; Setiadji, Setiadji
Jurnal Natur Indonesia Vol 13, No 2 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Let X be a partially ordered set, R is a commutative ring with identity and FININC (X, R) denote finitary incidencealgebra of poset X over R. In this paper it will be seen congruence of two elements that are idempotent orthogonalin FININC (X, R) relative to the modulo Radical Jacobson of algebra. Review of this topic would be useful to examineisomorphism problems of the finitary incidence Algebra.

Populasi Mikrob di Rizosfer dan Pertumbuhan Caisim (Brassica juncea) di Tanah Dikontaminasi Insektisida Organoklorin setelah Aplikasi Konsorsia Mikrob dan Kompos Hindersah, Reginawanti; Rachman, Wahyuda; Fitriatin, Betty Natalie; Nursyamsi, Dedi
Jurnal Natur Indonesia Vol 15, No 2 (2013)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Organochlorine insecticide hed been banned for agriculture but nowadays its residue was still found in some agriculturalsoil. One of ways to lower organochlorine residue in soil is by using degrading-organochlorine microbial consortiaaccompanied by compost application. However, application of exogenous microbes might affect bacterial and fungalpopulation in soil and hence plant growth. The pot experiment has been set up to verify the influence of Pseudomonasmallei and Trichoderma sp. and compost on total bacteria and fungi on rhizosphere of caisim (Brassica juncea L.) grownon Andisols which were contaminated with organochlorine insecticide of Heptachlor, endosulfan, dieldrin, and DDT.Experimental design was Factorial Randomized Block Design with three replicates. The first factor was microbial consortiaof P.mallei and Trichoderma sp., and the second one was the kind of compost. The result showed that effect of microbialconsortia on total bacteria population was determined by the kind of compost. Total bacterial population in rhizosphere ofcaisim grown with cow manure compost and microbial consortia was more increased. However, microbial consortia as wellas any kind of compost did not influence total fungal population in caisim rhizosphere. Amount of leaf increased due tomicrobial and compost application however plant yield did not.

Uji Toksisitas Akut Ekstrak Air Tanaman Sarang Semut (Myrmecodia pendans) Terhadap Histologi Organ Hati Mencit Soeksmanto, Arif; Simanjuntak, Partomuan; Subroto, Muhammad Ahkam
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

erbal products in powder or capsule forms made of sarang semut plant have been widely distributed in market.This plant is believed to treat several diseases, such as cancer, gout, liver, stroke, heart, hemorrhoid, back pain,allergy, and as tonicum to increase sexual desire. Information on the plants was still limited on plant distribution,ecology, ethnobotany, and taxonomy, without research on toxicity and clinical aspect. Considering that sarangsemut products has been distributed at market and limited scientific publication of the plant, hence acute toxicitytest of sarang semut extract should be conducted. The results showed that dose of 375 mg/kg bw caused liverdegeneration on day-5 and normal on day-19. Whereas dose of 3750 mg/kg bw caused cell necrosis up to day-12,degeneration still apparent on day-26.

Pengaruh Air Perasan Umbi Bawang Merah (Allium ascalonicum L.) terhadap Malondialdehid (MDA) Plasma Mencit yang diinduksi Hiperkolesterolemia Ismawati, Ismawati; Asni, Enikarmila; Hamidy, M Yulis
Jurnal Natur Indonesia Vol 14, No 1 (2012)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Malondialdehyde, a product of lipid peroxidation, is often used as an indicator to detect the oxidative stress damaged in the body. Lipidperoxidation is associated with progression of atherosclerosis. It is known that onion (Allium ascalonicum L.) can be used as an antioxidantand hypolipidemic agent, but whether onion can decrease hypercolesterolemia mice MDA plasma induced by yolk is still unknown. Thepurpose of this study was to investigate the effect of onion’s juice on hypercolesterolemia mice MDA plasma level. This was an experimentallaboratory research with post test only design with control. The measured parameters were cholesterol and MDA level on tested groups.Groups with treatment consist of yolks group, and 80% shallot juice, simvastatin and aquadest were separately used as positive and negativecontrol. The result showed that there was significant difference between high fat feed group which added 80% onion’s juice and high fat feedgroup only. Addition of 80% onion’s juice in high fat feed groups decreased MDA plasma level equal to normal feed group. In conclusion, itwas proved that onion’s juice decreased mice MDA plasma level.

Isolasi dan Identifikasi Komponen Utama Minyak Atsiri dari Kulit Buah Jeruk Manis (Citrus sinensis L.) Asal Timor, Nusa Tenggara Timur Siburian, Rikson
Jurnal Natur Indonesia Vol 11, No 1 (2008)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Isolation and identifications of peel orange oils (Citrus sinensis, L.) which maserased by lard, coconut oil and mixof lard-coconut oil ( 2 : 1) has been done. This research aimed to obtain main component of peel orange oils fromTimor, knowing influence of lard, coconut oil and mix lard-coconut oils whom using as maserate to results ofchemistry components and atsiri’s oil rendemen product. In this research has been done by using maseration,extraction and using FT – IR and GC – MS as characterizations instruments. The results showed D- Limonen as amain component of atsiri oil from peel orange’s Timor.

Genetic Variability of Five Provenances of Eboni Restu, Muhammad; Naiem, Mohammad
Jurnal Natur Indonesia Vol 10, No 1 (2007)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.10.1.1-5

A research was conducted to determine genetic variability and structure of ebony either within provenances or within trees in the same provenance using isozyme analyses. Results of this study are expected to show genetic variability of ebony with different provenances. For the purpose of the study, five provenances of ebony (Maros,Barru, Sidrap, Malili, and Mamuju) were prepared. The isozyme analysis using electrophoresis was applied to determine the genetic variability. The obtained data were statistically analyzed using multivariate and dendrogram analyses with Numerical Taxonomy System (NTSYS) Program applying unwighted pairgroup method and arrithmetic average (UPGMA) approach. Results showed that the variability of genetic provenances of ebony were less than any other tree species. Among the existing provenances, Barru dan Mamuju showed higher genetic variability compared to other provenances. Ebony provenance was generally found to homozygously increase or to performinbreeding. The genetic variability of ebony was mostly derived from the variability in population (95.4%). Grouping individual trees based on their provenances indicated that Malili provenance showed closed relationship to Maros provenance, whilst Mamuju provenance showed closed relationship to Barru and Sidrap provenances.

Analisis Parameter Fisik, Kimia, Biologi, dan Daya Dukung Lingkungan Perairan Pesisir Untuk Pengembangan Usaha Budidaya Udang Windu di Kabupaten Barru Rustam, Rustam
Jurnal Natur Indonesia Vol 13, No 1 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

The regency of Barru is a potential region for Tiger prawn cultured in the South Sulawesi Province. Generally, thisaquaculture activity is based on the application of intensively cultivated pattern by using artificial feed as a sourceof the prawn foremost meal. Some research suggested that an intensive pattern of prawn cultured generatessome waste products that are significantly to affect such physical, chemical as well as biological parameters ofcoastal water condition. That the change in environmental quality of coastal water will affect commercial tigerprawn that is the role of water to support sustainable cultured through its carrying capacity. This research wasaimed to analyze physical, chemical and biological parameters of coastal water and to ensure its carrying capacityin maintaining commercially tiger prawn cultured. The results are expected to be some more valuable referencesfor the benefit of the development of tiger prawn aquaculture. The research was conducted in the coastal waterfrom June to December 2007. Observation was made in order to find out physical, chemical, and biological factorsthroughout the stations (i.e., sea, coastal, pond, estuaria and the outlet of the farm stations). To examine thephysical, chemical and biological parameter of spatial characteristic, a Principal Component Analysis (PCA) wasused. The used approaches to determine carrying capacity were based on capacity and receivance ability ofwaters and oxygen content. The results of this research show that the entirely physical and chemical parametersof coastal water of the Barru regency were exceeded that of the requirement thresholds of the total suspendedsediment (TSS) and the chemical oxygen demand (COD). A spatial distribution of physical and chemicalcharacteristics was measured high by TSS and COD, as well as the level of water turbidity, all at the outflow ofestuaria and the Outlet; meanwhile, the value of NO2, Phosphate, and NH3 substances was recorded high at thepond. A biological parameter was characterized by the existence of phytoplankton through its density and abundanceas well. Those of the Class Bacyllariophyceae was dominantly encountered to attain at the top as high as 75.2% inspecies composition, followed by Cyanophyceae 9.3% at the second, and the rest Chlorophyceae 8.9% andDyanophyceae and Euglenophyceae 5.9% and 0.7% respectively. Based on the stationed preferences, those in thecoastal, the pond, and the Outlet were dominated by Bacyllariophyceae, whereas the estuaria by Cyanophyceae.The Shannon’s index of diversity (H’) of the entirely stations was varied among 1.01 – 2.12 that the lowest one at theestuaria and the highest at the sea. The coastal water has its carrying capacity to support the excess of 506,437kg organic waste substances based on the necessity of oxygen content suspending in the water column. Therefore,the given pond is feasible to develop to reach as much as 219 Ha intensive ponds, or 481 Ha semi-intensive pondson the other way.

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Irwan Effendi

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kurniawanronal09@gmail.com

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Riau

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Irwan Effendi

Contact Email natur@ejournal.unri.ac.id

Phone +62811764031

Journal Mail Official kurniawanronal09@gmail.com

Editorial Address Kampus Bina Widya KM. 12,5 Simpang Baru, Tampan, Pekanbaru 28293 Indonesia

Location Kota pekanbaru, Riau INDONESIA

Abstract

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Abstract

Contact Name
Irwan Effendi

Contact Email
natur@ejournal.unri.ac.id

Phone
+62811764031

Journal Mail Official
kurniawanronal09@gmail.com

Editorial Address
Kampus Bina Widya KM. 12,5 Simpang Baru, Tampan, Pekanbaru 28293 Indonesia

Location
Kota pekanbaru,

Riau

INDONESIA