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Contact Name
Titania T Nugroho
Contact Email
titania.nugroho@lecturer.unri.ac.id
Phone
+62811764031
Journal Mail Official
natur@ejournal.unri.ac.id
Editorial Address
Gedung LPPM Universitas Riau Jl. HR Subrantas Km 12,5 Pekanbaru 28293
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : http://dx.doi.org/10.31258/jnat
JURNAL NATUR INDONESIA terbit sejak tahun 1998, merupakan jurnal ilmu sains yang menyajikan artikel mengenai hasil penelitian, pemikiran dan pandangan dari peneliti dan pakar dalam bidang biosains (ilmu dasar), meliputi biologi, fisika, kimia dan matematika. Jurnal Natur Indonesia melibatkan mitra bestari yang menelaah setiap artikel sesuai dengan bidang ilmunya. Nama dan asal institusi mitra bestari tersebut tercantum pada halaman bagian normor 2 dari setiap volume penerbitan. Jurnal ini diterbitkan setahun dua kali, pada bulan April dan Oktober.
Articles 15 Documents
Search results for , issue "Vol 12, No 2 (2010)" : 15 Documents clear
Pola Resistensi Bakteri Penyebab Infeksi Saluran Kemih (ISK) Terhadap Antibakteri di Pekanbaru Endriani, Rita; Andrini, Fauzia; Alfina, Dona
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.146 KB) | DOI: 10.31258/jnat.12.2.130-135

Abstract

Urinary Tract Infection (UTI) is caused by a variety of microorganism, but bacteries are more often. Antibacterial isthe empiric treatment for UTI. The antibacterial resistance pattern of UTI can be changed by the place and time.Urine culture test and sensitivity test will help us to choose the effective treatment. The purpose of this researchis to find out the pattern of UTI in Pekanbaru. Results of this research showed that UTI bacterial resistancy mostlyfound in Gram negative bacateria with penicillin and 1 st cephalosporin antibiotic.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (69.325 KB) | DOI: 10.31258/jnat.12.2.152-155

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.681 KB) | DOI: 10.31258/jnat.12.2.163-166

Abstract

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.
Pengaruh Sitokinin Eksogen dan Sukrosa terhadap Produksi Biomassa dan Alkaloid Canthinone di dalam Kultur Suspensi Sel Pasak Bumi (Eurycoma longifolia Jack.) Mahmud Siregar, Luthfi Aziz
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (95.599 KB) | DOI: 10.31258/jnat.12.2.143-151

Abstract

The effect of addition cytokinins and modification of sucrose concentration on growth and alkaloid canthinoneproduction in cell suspension cultures of Eurycoma longifilia Jack were studied. The additions of cytokines, BAand kinetin, show effect on the production of biomass and alkaloid in cell suspension of E. longifilia Jack. Theoptimum totals of two-alkaloids were obtained on addition 4.44 μM BAP and without kinetin, respectively. Theaddition of 4.44 μM BA (6-benzyladenine) into TAM medium stimulated increased total of 9-hydroxycanthine-6-one,but decreased total of 9-methoxycanthin-6-one. While the addition of 2.32 - 9.29 μM kinetin (6-furfurylaminopurine)into TAM medium decreased total of two alkaloids (from 0.582 mg to 0.461 - 0.257 mg per 25 ml medium). Whensucrose concentration in TAM medium was increased from 3% to 5%, production of biomass would increase from0.374 g to 0.585 g dry weight per 25 ml medium. While total of two-alkaloids increase from 0.328 mg to 0.441 mgper 25 ml medium when concentration of sucrose in TAM medium was increased from 3% to 4% sucrose.
Penumbuhan Lapisan Tipis Cooper Phthalocyanine (CuPc) Sebagai Bahan Dasar Sel Surya Organik Nurosyid, Fahru; Kusumandari, Kusumandari
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.967 KB) | DOI: 10.31258/jnat.12.2.186-190

Abstract

Have been conducted a thin film plant of CuPc (Copper Phthalocyanine) and CuPc/Ag (Copper Phthalocyanine/Argentum) at substrat ITO (Indium Tin Oxide) with evaporation method. Coat plant attenuate this use variation ofmass that equal to 50 mg, 100 mg, and 150 mg, with current deposition equal to 40 Ampere. Characterization ofCuPc thin film use Scanning Electron Microscopy (SEM) to know the thickness of the thin film, UV - VisibleSpectrophotometer to know absorbance value of CuPc thin film at wavelength of visible light, and measurement ofvoltage current by two point probe method to know the voltage current characteristics from the thin film in the darksituation and under illumination situation. From result of SEM characterization show the thickness valueprogressively along increase of CuPc materials mass. For the each deposition mass obtained thickness value(0,46 ± 0,01) until (0,92 ± 0,02) μm. UV - Visible Spectrophotometer characterization show light absorption by CuPcthin film layer in visible light, absorption happened at wavelength range 520 nm until 780 nm. From the current -voltage measurement at dark and under illumination situation obtained a current value progressively increasealong its mass increase, but decrease from illuminated to darkness.
Sifat Fisikokimia dan Fungsional Pati Buah Aibon (Brugueira gymnorhiza L.) Sarungallo, Zita Letviany; Santoso, Budi; Tethool, Eduard Frasisco
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (123.058 KB) | DOI: 10.31258/jnat.12.2.156-162

Abstract

The aim of this research was to evaluate the physicochemical and functional properties of aibon (Brugueiragymnorhiza L.) starch. Research’s results show that the form of aibon starch granule was ellips like kidney, withsize of 5-4.5 μm, has high amylose content of 32.35%, and gelatinization temperature of 85.5-95oC. It also has highsolubility (7oBrix) and swelling powered of 14.83% at 90oC. Pasting behavior of starch suspension (6.5%, w/v)shows the initial pasting temperature at 85.5oC and peak viscosity 200 BU reached at 93oC. The wide range ofgelatinization temperature makes aibon starch resistant to high heat temperature. Functional characters thatmake aibon starch important for industrial application are its non-adhesive and un-sticky paste, increasing viscositywhile it was heated, unstable gel forming, and low stability to freezing-thawing cycle. Aibon starch also haspotential usage for carbohydrate base products that need starch which has heat resistant granule but does notneed starch that has high viscosity paste.
Chemical characteristics of organic wastes and their potential use for acid mine drainage remediation Munawar, Ali; Riwandi, Riwandi
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.621 KB) | DOI: 10.31258/jnat.12.2.167-172

Abstract

Organic substrate is an important component of biological treatments for acid mine drainage (AMD) remediation systems. It provides organic substrates to sulfate-reducing bacteria (SRB) in the sulfate (SO4) reduction, resulting in increased alkalinity and metal sulfide precipitates. Natural organic matters vary in their characteristics, and therefore may perform differently for remediation properties. This study was aimed to characterize four locally available organic wastes (bark, empty fruit bunch, sawdust, and chicken manure) potential for AMD remediation. Their chemical properties and elemental compositions were measured. An anaerobic incubation of these wastes in AMD was undertaken to determine their remediation properties. The pH, electrical conductivity (EC), redox potential (Eh), and dissolved Fe and SO4 of the mixtures were measured after the 1st, 7th, 14th, and 30th day of the incubation at room temperature. The results demonstrated that organic wastes varied in their chemical properties and performed differently in treating AMD. Organic wastes containing high alkalinity (high pH) and nutrient concentrations (chicken manure and empty fruit bunch) improved AMD quality through increasing pH (>6) and reducing dissolved Fe and SO4 concentrations. Although sawdust and bark (high CEC) did not increase pH up to acceptable standard at most time, they apparently were able to remove dissolved Fe from AMD through adsorption mechanism.
Modifikasi dan Karakterisasi Titania (M-TiO2) Dengan Doping Ion Logam Transisi Feni dan Cuni Rilda, Yetria; Arief, Syukri; Dharma, Abdi; Alif, Admin
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.25 KB) | DOI: 10.31258/jnat.12.2.178-185

Abstract

Structure and size of titania nanoparticles have been modified with doping the transition metal (FeNiand CuNi) and controlling the calcinations temperature. Gel and M-TiO 2 powder were characterized byFT-IR showed the changed in intensity at 4000-400 cm-1. TG-DTA curve show the weigh of sample wasdecreased with the increasing of temperature 25-800°C. XRD pattern used to identify the titania structureshows the highest intensity of anatase at temperature calcination as 500°C. XRD of FeNi-TiO 2 and CuNi-TiO2 FeNi 10.5-41.9 nm and CuNi 12.1-33.5 converted using Debye-Scherrer’s equation and TEM analysisthe distribution of crystal size as FeNi-TiO2 and CuNi-TiO2 10-15 nm. SEM has shown that morphology ofdifferent surface from the FeNi-TiO 2 and CuNi-TiO 2 at different calcinations temperatures. Titaniacomposition can be determined by EDX analysis give as FeNi-TiO2 1:1, 97.01% and CuNi-TiO2 1:1, 94.63%respectly. The surface area has been determined by BET as FeNi-TiO 2 was 64.38 m2/g and CuNi-TiO2was 40.9 m2/g.
Protein Haemaglutinin Outer Membran Protein (OMP) 35 kDa sebagai Protein Adhesin Proteus mirabilis pada Vesika Urinaria Kelinci Suswati, Enny; Mufida, Diana Chusna
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (89.982 KB) | DOI: 10.31258/jnat.12.2.136-142

Abstract

Proteus mirabilis is opportunistic and nosocomial pathogen that usually found in clinical specimen from patientswith catheter. The pathogenic mechanism of the bacteria are not fully elucidated especially its potential activity ofthe protein as hemaglutinin and adhesion molecule. The aim of this study is to evaluate the role of 35 kDa outermembrane protein from P. mirabilis. After identification, bacterial isolate of OMP fraction 12,5% SDS-PAGE wereused to isolate OMP followed by hemaglutinin test and invitro adhesion test. The study showed that the 35 kDa OMPof P. mirabilis was a hemaglutinin protein that could agglutinate mice erythrocytes, rabbit erythrocytes, and humangroup O erythrocytes. Hemaglutination test were negative on erythrocytes human blood group A,B, and AB. The 35kDa OMP was also adhesion protein showed by its activity to adhere to the rabbit vesica urinaria epithel receptor.The increase dose of 35 kDa OMP will decrease the amount of P. mirabilis bacteria to adhere to rabbit vesicaurinaria epithel (p< 0,05 ).
Serapan Hara N, P, K, dan Hasil Berbagai Varietas Tanaman Padi Sawah dengan Pemberian Amelioran Ion Cu, Zn, Fe pada Tanah Gambut Zahrah, Siti
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (54.337 KB) | DOI: 10.31258/jnat.12.2.102-108

Abstract

This research was conducted in the Experimental Field, Faculty of Agriculture, Riau Islamic University and SoilLaboratory, BPTP Riau Province from August to December 2007. The research aim to study the effect of Cu2+, Zn2+,Fe3+ ameliorant addition in peat to N, P, K uptake and rice yield of various varieties. The experimental with CompletelyRandomized Design for Factorial 4 x 4 were used. The first factor was ameliorant addition, consists of four levels(Cu2+; Zn2+; Fe3+) and second factor based on varieties, consists of four levels (PB-42, IR-64, Ciherang, Cisantana).The result of research indicates that: (1) Interactian effect of treatment was significant to N, P, K uptake, productivestem, weight of dried seed, and weight of 1000 seeds, (2) The best treatment was Cu2+ ameliorant on IR-64 withuptake of N ( 254,0 mg/plant), P (32,8 mg/plant), K (76,0 mg/plant), productive stem (30,0 stems/plant), weight ofdried seed (63,9 g/plant), weight of 1000 seeds (23,7 g).

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