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Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : http://dx.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 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.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 15 Documents
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Search results for , issue "Vol 13, No 3 (2011)" : 15 Documents clear
Senyawa Phenolik Akar Pisang CV. Kepok (Musa acuminata) yang Diinduksi dengan Fungi Mikoriza Arbuskular Indigenus PU10-Glomus sp 1 terhadap Penyakit Darah Bakteri Suswati, Suswati; Habazar, Trimurti; Husin, Eti Farda; Nasir, Nasril; Putra, Dedi Prima; Taylor, Peter
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.413 KB) | DOI: 10.31258/jnat.13.3.207-213

Abstract

Cooking banana (Musa acuminata) cv. Kepok is the most susceptible to Blood disease bacterium (BDB) infection.From previous study revealed the best isolate indigenous Arbuscular Mycorrhiza Fungi-Pasar Usang 10 (PU10-Glomus sp 1) could induce cv.Kepok resistance to BDB in green house and field experiment. The AMF could changethe phenolic compound in root plant. This objectives were to measure the root phenolic compound and bioassayto BDB. The 50 grams fresh inoculant PU10-Glomus sp 1 were applicated to banana root plants 60 days old with 6levels time course: 12; 24; 36; 48; 72; 92 hours and control (without PU10-Glomus sp 1). The root methanolicextraction followed to Echeverri et al., (2002) methode with vacuum concentration of the filtrate and partitioninginto ethyl acetate revealed the presence of an antibacterial compound as detected by TLC (Thin LayerChromatography), assay phenolic contained by Spectrofotometer UV-Vis 1700. PharmaSpec. Shimadzu andbioassay using BDB. Nine antibacterial compounds rose from root banana seedling colonized by PU10-Glomus sp1 in 12 hours after applicated (haa) ; 24; 36 and 48 haa. They were with Rf values of 0.16; 0.17; 0.19; 0.26; 0.32; 0.37;0.71; 0.80 and 0.83 on silica plates run in hexane:ethyl acetate (1:2 v/v) and control contained only 0.05 and 0.28.These compounds produced fluorescens which was bright yellow green spots and purple and have antimicbrobialproperties to BDB.
Identification of Agronomic Traits of Centella asiatica (L.) Urban. Naturally Grown at Regions With Different Altitudes Halimi, Entis Sutisna
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (106.508 KB) | DOI: 10.31258/jnat.13.3.232-236

Abstract

The Centella asiatica is an important herbal plant in Indonesia. The research was done to describe severalagronomic traits that related to yield of the plants grown at regions with different altitudes. The research wascarried out at three different regions of highland, midland, and lowerland, each at >500m, 250-500m, and < 250mabove sea level. The research location was Pagar Alam, Musi Rawas, and Ogan Ilir, respectively. Research indicatedthat the agronomic traits of the plants grown at highland, midland, and lowerland, regions were about the same forgeneral appearance of leaf shape and flower color. The leaf size, number and length of stolone, number of rossets,length of rhizomes, and number of flower were varied depending on the region. The plants grown at highland andmidland region tend to have larger leaf size, shorter petiole and stolone, more number of rossets and stolone,longer rhizomes, and more number of flowers per plant, compared to the plants of lowerland region. This could beindication that Centella asiatica plants grown on midland, and highland were more productive than plants oflowerland region.
Pengaruh Kolonisasi Trichoderma spp. pada Akar Bibit Pisang terhadap Perkembangan Penyakit Layu Fusarium (Fusarium oxysporum f. sp. cubense) Nurbailis, Nurbailis; Martinius, Martinius
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (57.5 KB) | DOI: 10.31258/jnat.13.3.220-225

Abstract

The purpose of the research was to obtain the superior Trichoderma that had ability to colonize root with the resultbeing effective to supress Fusarium wilt desease and promote banana seedling growth. This experiment consistedof 2 factors and 4 replications. The first factor was Trichoderma spp. namely : A. Trichoderma koningii strain S6sh(TK-S6sh), B Trichoderma viride strain T1sk (TV-T1sk) and Trichoderma harzianum strain S10sh (TH-S10sh). Thesecond factor was the kind of banana namely a.Cavendis, b. Barangan and c. Kepok. The observation werecolonization ability, Fusarium wilt desease development and the banana seedling growth. The result showed thatTV-T1sk was the best spesies to colonize all banana seedling root. The highest colonization in Barangan bananaseedling root reached 80%. Trichoderma colonization in banana seedling root could suppress Fusarium wilt diseasedevelopment and increase banana seedling weight. Higher ability of Trichoderma to colonize banana seedling rootcaused lower disease incidence of Fusarium wilt and greater biomass of banana seedling. Interaction betweenTV-T1Sk and Barangan banana was the best in colonization, so they were effective to suppress Fusarium wiltdesease and increase banana seedling biomass.
Aquatic Plants for Acid Mine Drainage Remediation in Simulated Wetland Systems Munawar, Ali; Leitu, Farkhruddin Okte; Bustamam, Hendri
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.31258/jnat.13.3.244-249

Abstract

Aquatic plant is an important component of a constructed wetland system for treating acid mine drainage (AMD).This study was conducted to investigate the remediation effects of planting three aquatic plants species on AMDquality in simulated wetland systems. Simulated wetland systems were constructed using 10-L plastic containersas growth media comprising mixed-organic substrates and aquatic plant species as planting treatments. Thetreatments involved individual plantings with Fimbristilys hispidula (Vahl) Konth, Mariscus compactus (Retz) Druce,and Typha angustifolia L., and mixed-planting with a combined three-plant species. As the control was the unplantedmedia. The plants were continuously flooded with very acidic AMD collected from a mine pit in PT TambangBatubara Bukit Asam, South Sumatra. During the experiment, the acidity (pH), oxidation reduction potential (Eh),and electrical conductivity (EC) of the flooding AMD were measured after 24 hours of the flooding, and thenbiweekly until the plants entered their reproductive stage. To estimate Fe removed by plants, AMD samples weretaken from both planted and unplanted systems for total dissolved Fe analyses. The data revealed some remediationeffects of planting aquatic plants on AMD in the wetland treatment systems. The presence of plants in the wetlandsystem appeared to induce oxygen diffusion to surrounding roots, which might result in Fe precipitation on rootsurface. Although no differences among planting treatments, Fe removals by plants highly correlated (R2=0.92)with the production of plant biomass.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (120.018 KB) | DOI: 10.31258/jnat.13.3.262-268

Abstract

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (919.679 KB) | DOI: 10.31258/jnat.13.3.187-199

Abstract

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.
Adsorption Isotherms of Phenol Onto Adsorbents Derived from Egg Shell and Palm-Oil Shell Asyhar, Rayandra
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (70.222 KB) | DOI: 10.31258/jnat.13.3.276-280

Abstract

The adsorption isotherms of phenol from aqueous solution onto adsorbents obtained from egg shell (ESA) andpalm shell (PSA) were investigated. The objectives of the investigation were to understand the effect of bothadsorbents on solution pH and to study the adsorption equilibrium of phenol onto the adsorbents. The effect ofadsorbent on pH of solution was studied by shaking the adsorbent of 0.1 to 1.5 g with 100 ml of acidic aqueoussolution for 30 min at room temperature. The adsorption experiments were performed by stirring appropriateamount of adsorbent with 100 ml of 50 mg/l concentration of phenol at constant temperature and pressure. TheLangmuir and Fraundlich adsorption models were applied to experimental data and the isotherm constants werecalculated using linier regression analysis. The results showed that the adsorption capacity of the adsorbentsincreases with increasing of dosage and contact time. Also, pH of solution affected the adsorption isotherm ofphenol, where maximum adsorption was observed at pH values lower than 9.
Pengaruh Ion Kadmium(II) dan Nikel(II) pada Ekstraksi Ion Tembaga(II) dengan Ekstraktan 4-Benzoil -1-Fenil-3-Metil- 2- Pirazolin-5-On Menggunakan Emulsi Membran Cair Hamzah, Baharuddin; Jalaluddin, Noor; Wahab, Abdul Wahid; Upe, Ambo
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (123.52 KB) | DOI: 10.31258/jnat.13.3.269-275

Abstract

The effects of cadmium(II) and nickel(II) ions to copper(II) extraction using liquid membrane emulsion with 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-on (HPMBP) as an extractant was studied. The optimum condition forcopper(II) extraction were as follows: emulsification rate=2000 rpm, emulsification time=10 minutes, extractionrate=300 rpm, extraction time=15 minutes, concentration of mixed surfactant (span 80+span 20)=3%, volumeratio of membrane phase and internal phase=1:1, concentration of HPMBP=0.020 M, concentration of HCl=1M,volume ratio of emulsion and external phase=1:7. The result showed that the extraction of copper(II) by liquidmembrane emulsion with HPMBP as an extractant was selective to cadmium(II) and nickel(II) ions, relatively. Theresult also showed that in the extraction of 500 mg/l copper(II), the presence of 500 mg/l of nickel(II) was decreasingthe percentage of copper(II) extraction to be 83.73. While, the presence of 500 mg/l of cadmium(II) does notinfluence the percentage extraction of copper(II), relatively.
The Genus Licuala Wurmb (Arecaceae) in Java Siregar, Etti Sartina; Tjitrosoedirdjo, Sri Sudarmiyati
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.188 KB) | DOI: 10.31258/jnat.13.3.226-231

Abstract

The comprehensive revision of the genus has been done in the Malay Peninsula, New Guinea, Sumatra andKalimantan. In Java, the revision of Licuala has never been recently completed. This study was based onmorphological characters of specimens which are preserved in Herbarium Bogoriense. The several living collectionscultivated in Bogor Botanical Garden were studied. The aim of this study is to ascertain the correct names andimprove the species delimitation of Licuala in Java. The result shows that there are three species of Licuala inJava. They are L. gracilis, L. pumila and L. spinosa. Two previously known species have been placed into synonymies;L. flabellum to L. gracilis, and L. spectabilis to L. spinosa. Licuala gracilis is endemic for west Java.
Pengaruh Ukuran Embriozigot terhadap Regenerasi Beberapa Klon Kakao Avivi, Sholeh; Restanto, Didik Pudji; Widyastuti, Tri
Jurnal Natur Indonesia Vol 13, No 3 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.245 KB) | DOI: 10.31258/jnat.13.3.237-243

Abstract

This sesearch identified the responses of size of zygotic embryo of cocoa and to identify the responses of cocoaclone types toward ability to produce somatic embryo. The research was designed by Completely RandomizedFactorial Design within five replications. The first factors were the sizes of used explants, namely small (2-5 mm),average (6-9 mm) and big (10-15 mm). The second factors were cocoa clones, namely RCC 72, Sca 6, KW 162, KW163 and KW 165. The result showed that the best explant was the small size (2-5 mm) of cocoa zygotic embryo. Ithad significantly on number of rooting embryos and number of embryos with buds on rooting media. Clone RCC 72was the most responsive clone and could generate to be plantlet. Clone KW 165 performed the lowest response.

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