Found 8 Documents

Pertumbuhan Bakteri Laut Shewanella indica LBF-1-0076 dalam Naftalena dan Deteksi Gen Naftalena Dioksigenase - (The Growth of Marine Bacteria Shewanella indica LBF-1-0076 in Naphthalene and Naphthalene dioxygenase Gene Detection) Farini, Nuzul; Thontowi, Ahmad; Yetti, Elvi; Suryani, Suryani; Yopi, Yopi
Biopropal Industri Vol 8, No 1 (2017)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Crude oil exploitation which often occured offshore can cause water pollution in the sea since its contains naphthalene which is a hazardous compounds. This research used marine bacteria LBF-1-0076 that have ability in naphthalene degradation. This research aimed to study the parameter effect of naphthalene and cell concentration toward marine bacteria LBF-1-0076. This research also identified isolate LBF-1-0076 and detected the encode gene of naphthalene dioxygenase. Based on growth test result, the optimum naphthalene degradationby isolate LBF-1-0076 occured in 75 ppm naphthalene concentration with 15cell concentration. The result of 16S rDNA gene analysis showed that LBF-1-0076 was identified as Shewanella indica strain 0102 with identical value 99%. The result of naphthalene dioxygenase gene detection using Polymerase Chain Reaction (PCR) showed that the isolate contained naphthalene dioxygenase gene with size ±377 bp. Therefore, LBF-1-0076 potential as bioremediation agent to solve crude oil contamination in the sea.Keywords:   crude oil, marine bacteria, naphthalene, naphthalene dioxygenase, Shewanella indicaABSTRAKEksploitasi minyak bumi yang sering terjadi di laut mengakibatkan adanya pencemaran minyak di laut. Naftalena merupakan salah satu senyawa dominan berbahaya yang terkandung dalam minyak bumi dan dapat mengakibatkan pencemaran perairan. Penelitian ini menggunakan bakteri laut LBF-1-0076 yang memiliki kemampuan untuk mendegradasi naftalena. Tujuan dari penelitian ini adalah mempelajari pengaruh parameter konsentrasi naftalena dan konsentrasi sel terhadap bakteri laut pendegradasi naftalena LBF-1-0076. Penelitian ini juga bertujuan untuk mengidentifikasi isolat LBF-1-0076 dan mendeteksi gen pengkode naftalena dioksigenase. Berdasarkan hasil uji pertumbuhan, degradasi naftalena yang optimal oleh isolat LBF-1-0076 terjadi pada konsentrasi naftalena 75 ppm dengan konsentrasi sel 15. Hasil analisis gen 16S rDNA menunjukkan isolat LBF-1-0076 teridentifikasi sebagai Shewanella indica strain 0102 dengan nilai keidentikan 99%. Hasil deteksi gen naftalena dioksigenase dengan menggunakan Polymerase Chain Reaction (PCR) menunjukkan bahwa isolat tersebut mempunyai gen naftalena dioksigenase dengan ukuran ±377 bp. Oleh karena itu, isolat LBF-1-076 berpotensi sebagai agen bioremediasi untuk mengatasi masalah pencemaran minyak bumi di laut.Kata kunci: bakteri laut, minyak bumi, naftalena, naftalena dioksigenase, Shewanella indica
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 1, No 1 (2011): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.1.1.10


Brantas River that is located at Upper Brantas River Basin Area has been polluting that is noted by poluttion that taking place at Karangkates and Sengguruh Reservoir. Development of people and industries around Malang Upper Brantas River Basin Area since 2000, leading to increasing of river water using and pollution, particularly organic pollution. This research evaluated river water quality at Malang Upper Brantas River Basin Area, refered to water quality standard inserted on Governmental Regulation Number 82 / 2001 (PP No. 82 tahun 2001) and observed its relation to land use system and its surrounding people activity. Water quality is observed at 18 station focusing on physical parameters such as temperature, conductivity, suspended solid, and chemical parameters such as pH, DO, BOD, COD, N-nitrate, total nitrogen, orthophosphate and total phosphorous. Furthermore, water quality status is determined by using of pollution index methode, based on Environment Ministerial Regulation Number 115 / 2003 (Kep. Men. LH No. 115 tahun 2003). Evaluation result was related to land use system at Upper Brantas River Basin Area and its surroundings people activity. Evaluation result showed that, water quality has been decreasing at that area compared with the year of 1997-2002, and furthermore almost at all stations the value of COD has exceeded maximum limit threshold. Determination of water quality status also showed that all rivers at Upper Brantas River Basin has been polluted, majority with medium polutted grade. Research the result also showed that river water quality at Malang Upper Brantas River Basin is influenced by land use system and its surroundings people activity, particuarly by industries located along the river basin. Key Words: Evaluation of River Water Quality, Upper Brantas River Basin, land use system, surroundings people activity
Pertumbuhan Optimal Bakteri Laut Pseudomonas aeruginosa LBF-1-0132 dalam Senyawa Piren Safitriani, Safitriani; Thontowi, Ahmad; Yetti, Elvi; Suryani, Suryani; Yopi, Yopi
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v13i1.3100


ABSTRACTPyrene is a high molecular weight chemical compound belongs to polycyclic aromatic hydrocarbon (PAHs) group that are difficult to degrade by environment. Biodegradation techniques using indigenous marine bacteria are used to be as an effort to reduce pollutants that are carsinogenic. The objectives of this research are to screen of 18 marine bacteria isolates qualitatively by sublimation method and quantitatively by growth test and to optimize degradation activity of marine bacteria isolates by pyrene concentration and cell concentration. Identification by 16S rDNA and phylogenetic tree analysis were conducted to determine the molecular basis of bacterial identity. The result of sublimation showed that 15 isolates were positive result for pyrene degradation and classified to 3 groups. The first group consisted of 5 isolates that can produce clear zone, while the second group are 5 isolates with isolate color changes. The third group have both of activities. Growth test showed that isolate LBF-1-0132 has high potency to degrade pyrene compound. Isolate LBF-1-0132 is capable of degrading pyrene compounds optimally at concentration of 600 ppm and optimum cell concentration of 20. Based on 16S rDNA gene analysis, isolate LBF-1-0132 is Pseudomonas aeruginosa with 98% identity.Keywords :pyrene, marine bacteria, optimization, 16S rDNA identification
Karakterisasi Biodegradasi Senyawa Poliaromatik Dibenzothiophene Oleh Bakteri Laut Novosphingobium mathurense LBF-1-0061 Tanjung, Puspasari Noerwan; Yetti, Elvi; Thontowi, Ahmad; Suprihadi, Agung; Purwantisari, Susiana; Yopi, Yopi
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v12i2.2894


ABSTRACTDibenzothiophene is one of polycyclic aromatic hydrocarbon (PAH) compound containing sulfur element. This compound has toxicity, mutagenic and quiet persistent in environment. From sreening test, it was known that isolate LBF-1-0061 was potential to degrade dibenzothiophene. The objectives of this study are to study dibenzotiophene degrading capability by marine bacteria isolate LBF-1-0061 using screening test; analysis of dibenzothiophene residue by GC/MS and identifiy the isolate by molecular identification. The result of this research shown that LBF-1-0061 isolate could grow up to 100 ppm of dibenzotiophene. This isolate also presented degrading capability approximately 37.5% of dibenzotiophene in 14 days incubation. Based on partial 16S rRNA gene analysis, LBF-1-0061 was identified 99% as Novosphingobium mathurense strain SM117.Keywords: sea bacteria, biodegradation, dibenzotiofen, hydrocarbon aromatic polisiclic
Optimization of Substrate and Starter Cell Concentrations for Dibenzothiopene Biodegradation by Indigeneous Marine Bacteria Mauricauda olearia LBF-1-0009, Alcanivorax xenomutants LBF-1-0018, and Stakelama pacifica LBF-1-0031 Yetti, Elvi; Thontowi, Ahmad; Yopi, Yopi
ANNALES BOGORIENSES Vol 21, No 2 (2017): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ab.v21i2.300


Dibenzothiophene (DBT) and its derivatives have been widely used as model organic sulfur compounds in petroleum, included their biodegradation process. The abilities of microorganisms to degrade pollutants are significantly influenced by various factors such as microbial species, nutrients and environmental parameters. In this research, we carried out further study to determine optimal condition for DBT biodegradation regarding with substrate and strains cell concentration by several indigenous marine bacteria from Indonesia. These three isolates were belong to Mauricauda olearia, Alcanivorax xenomutants, and Stakelama pacifica, with homology result 99% each. Optimal dibenzothiophene as substrate reached by all isolates is 100 ppm, while cell concentration or microbial numbers that gave highest growth for all isolates is 20 based on conversion of OD600 nm measurement.  
Medium Chain and Long Chain Alkanes Hydroxylase Producing Whole Cell Biocatalyst From Marine Bacteria Thontowi, Ahmad; Yetti, Elvi; Yopi, Yopi
ANNALES BOGORIENSES Vol 22, No 1 (2018): Annales Bogorienses
Publisher : Research Center for Biotechnology - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ab.v22i1.329


Alkanes are  major component of crude oil that could be hydrolyzed by the enzyme of alkane hydroxylase. The are three types of alkane hydroxylase based on the chain length of alkane such as short-chain length/SCL (C2-C4), medium-chain length/MCL (C5-C17), and long-chain length/LCL (C>18). The aims of this study were to characterize and identify alkanes-degrading bacteria from these bacteria. The 30 strains from marine were grown on MCL (Pentane-C5H12, Decane-C10H22, and Pentadecane-C15H32) and LCL (n-Paraffin-C12H19C17 and branch of Pristane-C19H40). The study showed twenty-nine isolates have the ability to degrade alkanes compounds, whereas 14 isolates have grown ability on MCL and LCL medium, 11 isolates have the ability to grow on MCL and n-LCL, 3 isolates have the ability only to grow on MCL medium and 1 isolate has the ability only grow on n-LCL medium. The growth test result indicated that 29 isolates have medium-chain alkane monooxygenase and long-chain alkane hydroxylase. Based on 16S rDNA gene analysis, we obtained twenty nine of oil- degrading bacteria, namely a-proteobacteria (57 %), g-proteobacteria (30 %), Flavobacteria (7 %), Bacilli (3%) and Propionibacteriales (3 %). g-Proteobacteria and a-proteobacteria which seems to play an important role in the alkane biodegradation.
Penapisan dan Optimasi Pertumbuhan Bakteri Laut yang Berpotensi sebagai Hidrokarbonoklastik PAH Fenotiazin Yetti, Elvi; Thontowi, Ahmad; Yopi, Yopi
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 11, No 2 (2016): Desember 2016
Publisher : Balai Besar Riset Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (148.782 KB) | DOI: 10.15578/jpbkp.v11i2.297


Fenotiazin merupakan senyawa dari kelompok hidrokarbon aromatik polisiklik atau polycyclic aromatic hydrocarbon (PAH) yang terkandung di dalam minyak mentah. Fenotiazin bersifat persisten dan mudah terbakar di lingkungan. Selain itu fenotiazin juga menyebabkan iritasi kulit, hepatitis, dan anemia terhadap manusia. Bakteri laut memiliki kemampuan untuk mendegradasi senyawa PAH. Tujuan penelitian ini adalah menyelek si bakteri laut yang berpotensi sebagai hidrokarbonoklastik fenotiazin dan melakukan optimasi konsentrasi fenotiazin untuk studi biodegradasinya. Seleksi isolat dilakukan pada media padat dengan metoda sublimasi dan media cair dengan uji pertumbuhan. Hasil seleksi awal dengan metoda sublimasi menunjukkan 32 isolat sebagai kandidat bakteri pendegradasi fenotiazin. Isolat-isolat ini dikelompokkan menjadi 3 kelompok berdasarkan indikatornya dalam seleksi dengan media padat yaitu isolat yang dapat mengubah warna media, membentuk zona bening, dan isolat yang memiliki kemampuan keduanya. Seleksi dengan menggunakan uji pertumbuhan menunjukkan bahwa isolat LBF-1-0057 yang teridentifikasi sebagai Pseudomonas aeruginosa strain MCCB102 dan isolat LBF-1-0126 memiliki pertumbuhan terbaik dari kelompok isolat yang mengubah warna media. Isolat LBF-1-0102 yang teridentifikasi sebagai Pseudomonas balerica BerOc6 dan isolat LBF-1-0133 yang teridentifikasi sebagai P. aeruginosa ATCC10145 merupakan isolat terbaik dari kelompok zona bening, sedangkan isolat LBF-1-0115 adalah isolat dengan pertumbuhan tertinggi di kelompok berindikator keduanya. Konsentrasi optimum fenotiazin untuk P. aeruginosa strain MCCB102, P. aeruginosa ATCC10145, dan isolat LBF-1-0115 adalah 500 ppm; sedangkan 250 ppm merupakan konsentrasi optimum untuk isolat LBF-1-0126 dan P. balerica BerOc6.
Optimasi Pertumbuhan Bakteri Laut Salinicola peritrichatus LBF-1-0025 dalam Senyawa Alkana Lingga, Ratna Cempaka; Thontowi, Ahmad; Yetti, Elvi; Budiharjo, Anto; Rukmi, Isworo; Yopi, Yopi
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 12, No 2 (2017): Desember 2017
Publisher : Balai Besar Riset Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (181.11 KB) | DOI: 10.15578/jpbkp.v12i2.344


AbstrakPentana, dekana, pentadekana, dan parafin merupakan jenis kelompok senyawa alkana yang tidak dapat larut dalam air dan sulit terdegradasi. Sifat ini yang menjadikan senyawa alkana dapat mencemari lingkungan. Penelitian ini bertujuan untuk mengetahui konsentrasi optimum senyawa alkana bagi pertumbuhan isolat LBF-1-0025 dan mengidentifikasinya secara molekuler berdasarkan gen 16S rDNA. Dari skrining awal diketahui bahwa isolat LBF-1-0025 memiliki potensi tinggi dalam mendegradasi senyawa pentana, dekana, pentadekana, dan parafin. Optimasi pertumbuhan isolat LBF-1-0025 pada beberapa senyawa alkana dilakukan dengan menumbuhkannya dalam medium Artificial Sea Water (ASW) yang mengandung beberapa konsentrasi senyawa pentana, dekana, pentadekana, dan paraffin. Isolat LBF-1-0025 mampu tumbuh secara optimal pada pentana 150 ppm, dekana 200 ppm, pentadekana 150 ppm, dan parafin 200 ppm setelah 3 hari inkubasi. Hasil analisis sekuen gen 16S rDNA, bakteri LBF-1-0025 memiliki kemiripan sebesar 97% dengan Salinicola peritrichatus DY22.The Growth Optimization of Marine Bacteria  Salinicola  peritrichatus LBF-1-0025 in AlkanesAbstractPentane, decane, pentadecane, and paraffin are kind of groups of alkane compounds that are insoluble in water and difficult to degrade. This characteristic cause alkane compounds to pollute the environment. The aims of this research were to determine the optimum concentration of alkane compounds for the growth of isolate LBF-1-0025 and molecular identification based on 16S rDNA gene. From initial screening test, it was known that isolate LBF-1-0025 had high potential in degrading pentane, decane, pentadecane and paraffin compounds. Growth optimization of isolate LBF-1-0025 on several alkane compounds were carried out by culturing it in ASW medium containing various concentration of alkane (pentane, decane, pentadecane, and paraffin). Isolate LBF-1-0025 had optimum growth in pentane 150 ppm, decane 200 ppm, pentadecane 150 ppm and paraffin 200 ppm after 3 days incubation. Result analysis of 16S rDNA gene showed that isolate LBF-1-0025 had a similarity of 97% with  Salinicola  peritrichatus DY22.