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- 4-iodoanisole (2)
- Agricultural waste (2)
- BSA-glutaraldehyde (2)
- Bioethanol (2)
- CO gene (2)
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- Conductometric biosensor (2)
- Diazinon (2)
- Fermentation (2)
- Flowering time (2)
- Musa (2)
- New records (2)
- Organophosphate hydrolase (2)
- Palladium (2)
- Phenylsilane (2)
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- Rice straw (2)
- SPCE (2)
- Starter (2)
- Sulawesi (2)
- Transgenic plant (2)
- Tris(4-methoxyphenyl)phenylsilane (2)
- Wild banana (2)
- Alginate (1)
- Alyxia reinwardtii (1)
- Anodic stripping voltammetry (1)
- Antivortex wall (AVW) (1)
- Aquatic sediment (1)
- Atom laser (1)
- Au nanoparticle (Au-NP) (1)
- Biosorption (1)
Articles 1 - 26 of 26
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Isolation Of Pandangolide 1 From Cladosporium Oxysporum, An Endophyte Of The Terrestrial Plant Alyxia Reinwardtii, Dwi Hartanti, Diah Intan Purwanti, Herdayanto Sulistyo Putro, Mostafa Ezzat Rateb, Suwidji Wongso, Noor Erma Sugijanto, Rainer Ebel, Gunawan Indrayanto
Isolation Of Pandangolide 1 From Cladosporium Oxysporum, An Endophyte Of The Terrestrial Plant Alyxia Reinwardtii, Dwi Hartanti, Diah Intan Purwanti, Herdayanto Sulistyo Putro, Mostafa Ezzat Rateb, Suwidji Wongso, Noor Erma Sugijanto, Rainer Ebel, Gunawan Indrayanto
Makara Journal of Science
that the 2011 IOD was a weak and short-lived event. It developed in July, peaked in September, decayed in October and
Induction Of Callose Deposition In Tobacco (Nicotiana Tabacum) By Bacterial Lipopolysaccharide Pseudomonas Syringae Pv. Tabaci And Pseudomonas Syringae Pv. Glycinea, Pipit Marianingsih, Andi Salamah, Yuki Ichinose
Induction Of Callose Deposition In Tobacco (Nicotiana Tabacum) By Bacterial Lipopolysaccharide Pseudomonas Syringae Pv. Tabaci And Pseudomonas Syringae Pv. Glycinea, Pipit Marianingsih, Andi Salamah, Yuki Ichinose
Makara Journal of Science
Lipopolysaccharide (LPS) is a major component of outer-membrane gram-negative bacteria, and it can act as a Pathogen-Associated Molecular Pattern (PAMP) for perception of pathogens by plants. LPS can be recognized by plants, triggering certain plant defense-related responses, including callose deposition. This study investigated induction of callose deposition by bacterial LPS in tobacco. Tobacco leaves were infiltrated with 400 µg/mL and 800 µg/mL LPS extracted from Pseudomonas syringae pv. tabaci (Pta) and Pseudomonas syringae pv. glycinea (Pgl) and incubated for 24 h or 48 h. To detect callose deposition, tobacco leaves were cleared in lactophenol solution, stained with aniline blue, and …
Coupled Ocean-Atmosphere Mode In The Tropical Indian Ocean During 2011, Iskhaq Iskandar, Wijaya Mardiansyah, Dedi Setiabudidaya
Coupled Ocean-Atmosphere Mode In The Tropical Indian Ocean During 2011, Iskhaq Iskandar, Wijaya Mardiansyah, Dedi Setiabudidaya
Makara Journal of Science
Coupled ocean-atmosphere mode in the tropical Indian Ocean, so-called the Indian Ocean Dipole (IOD), occurred
Discrete Energies Of A Weakly Outcoupled Atom Laser Beam Outside The Bose–Einstein Condensate Region, Teguh Budi Prayitno
Discrete Energies Of A Weakly Outcoupled Atom Laser Beam Outside The Bose–Einstein Condensate Region, Teguh Budi Prayitno
Makara Journal of Science
We consider the possibility of a discrete set of energies of a weakly outcoupled atom laser beam to the homogeneous Schrödinger equation with anisotropic harmonic trap in Cartesian coordinates outside the Bose–Einstein condensate region. This treatment is used because working in the cylindrical coordinates is not really possible, even though we implement the cigar-shaped trap case. The Schrödinger equation appears to replace a set of two-coupled Gross– Pitaevskii equations by enabling the weak-coupling assumption. This atom laser can be produced in a simple way that only involves extracting the atoms in a condensate from by using the radio frequency field. …
Intergenus Protoplast Fusion Between Pichia Manshurica And Rhodosporidium Paludigenum To Increase The Production Of Inulinase, Wijanarka Wijanarka, Endang Sutariningsih Soetarto, Kumala Dewi, Ari Indrianto
Intergenus Protoplast Fusion Between Pichia Manshurica And Rhodosporidium Paludigenum To Increase The Production Of Inulinase, Wijanarka Wijanarka, Endang Sutariningsih Soetarto, Kumala Dewi, Ari Indrianto
Makara Journal of Science
The purposes of this study was to identify the optimum concentration of the lytic enzyme Glucanex for protoplast isolation and to conduct fusion for the purpose of increasing inulinase production. The study performs the protoplast fusion technique using Pichia manshurica and Rhodosporidium paludigenum. Protoplast fusion consists of a series of stages: protoplast isolation, protoplast fusion, protoplast regeneration, and analysis of hybrid fusion results. Protoplast isolation and fusion success rate are determined by various factors, including age of the culture, media type, and type of lytic enzymes used. Hybrid results were analyzed using a fungicide as a marker and measuring specific …
Microwave-Assisted Synthesis Of Alginate-Stabilized Gold Nanoparticles, Foliatini Foliatini, Yoki Yulizar, Mas Ayu Elita Hafizah
Microwave-Assisted Synthesis Of Alginate-Stabilized Gold Nanoparticles, Foliatini Foliatini, Yoki Yulizar, Mas Ayu Elita Hafizah
Makara Journal of Science
during boreal summer to fall 2011. In this study, data from satellite observations and atmospheric reanalysis datasets
Phase Diagrams And Current Density Profiles Of The Totally Asymmetric Simple Exclusion Process In Two Dimensions, For A Three-Way Junction, Rini Septiana, Annisa Indriawati, Wipsar Sunu Brams Dwandaru
Phase Diagrams And Current Density Profiles Of The Totally Asymmetric Simple Exclusion Process In Two Dimensions, For A Three-Way Junction, Rini Septiana, Annisa Indriawati, Wipsar Sunu Brams Dwandaru
Makara Journal of Science
This study explores a dynamical model called the totally asymmetric simple exclusion process (TASEP) in two dimensions (2D). An open boundary condition is specified for the model, and sequential updating dynamics are used as the dynamical rule. The system studied is a discrete 2D system of lattice sites, which are modified into a three-way junction. Two cases are considered: a three-way junction with two entrances and one exit, and a three-way junction with one entrance and two exits. The density and current density of the system are determined numerically, such that a phase diagram is obtained. The continuity equation describing …
Diversity And The Composition Of Fatty Acids Of Lipolytic Bacteria Isolated From Soil And Aquatic Sediment In A Forest And On An Oil Palm Plantation, Marini Wijayanti, Anja Meryandini, Aris Tri Wahyudi, Munti Yuhana
Diversity And The Composition Of Fatty Acids Of Lipolytic Bacteria Isolated From Soil And Aquatic Sediment In A Forest And On An Oil Palm Plantation, Marini Wijayanti, Anja Meryandini, Aris Tri Wahyudi, Munti Yuhana
Makara Journal of Science
The specific bacteria in forests and on oil palm plantations are lipolytic bacteria. Their enzymes have been applied in the agro-aquaculture, food, detergent, pharmaceutical, dairy, and biodiesel-biokerosene industries. This study describes the diversity of cultivable lipolytic bacteria from soil and aquatic sediment in a forest and on an oil palm plantation and their fatty acid products. Soil samples used in this research were obtained from topsoil in a lowland forest and on an oil palm plantation and from sediments in fresh water near these sites. The forest is located in Bukit Duabelas National Park, and the oil palm plantation is …
Development Of Immunochromatographic Strip Tests For Selective And Quantitative Detection Of Melamine, Wiyogo P. Wicaksono, Tribidasari A. Ivandini, Endang Saepudin, Yasuaki Einaga
Development Of Immunochromatographic Strip Tests For Selective And Quantitative Detection Of Melamine, Wiyogo P. Wicaksono, Tribidasari A. Ivandini, Endang Saepudin, Yasuaki Einaga
Makara Journal of Science
An immunochromatographic strip test based on the complex reaction of antigen-antibody (melamine-antimelamine) was developed for quantitative detection of melamine. Gold nanoparticles (AuNP) were used to form AuNP-labeled antibody, which then acted as a biosensor. Melamine quantification was performed by the determination of AuNP using anodic stripping voltammetry technique with a boron-doped diamond as the working electrode. With sample volume of 100 µL and immunoreaction time of 7 min, the developed immunochromatographic strip test produced a linear calibration curve for melamine concentration range of 0–0.6 mg/L, with detection limit of 0.1 mg/L and RSD of ~5%. Furthermore, negative results were obtained …
Suspension Stability And Characterization Of Chitosan Nanoparticle–Coated Ketoprofen Based On Surfactants Oleic Acid And Poloxamer 188, Nur Qadri Rasyid, Purwantiningsih Sugita, Laksmi Ambarsari, Gustini Syahbirin
Suspension Stability And Characterization Of Chitosan Nanoparticle–Coated Ketoprofen Based On Surfactants Oleic Acid And Poloxamer 188, Nur Qadri Rasyid, Purwantiningsih Sugita, Laksmi Ambarsari, Gustini Syahbirin
Makara Journal of Science
In this research, ketoprofen was used as a drug model in the preparation of chitosan nanoparticles as a potential drug delivery system through the ionic gelation process with tripolyphosphate (TPP). The particle size analysis (PSA) revealed that the average particle size, polydispersity index (PI), and entrapment efficiency of chitosan nanoparticles prepared with oleic acid were 253.7 nm and 0.375 with drug entrapment efficiency of 73.30%. Those prepared with poloxamer 188 were 242.94 nm and 0.302 with drug entrapment efficiency of 87.89%. Scanning electron microscopy (SEM) analysis showed that the shapes of the nanoparticles, both prepared with oleic acid and poloxamer …
The Use Of Carbon Dioxide Released From Coconut Shell Combustion To Produce Na2co3, Wasinton Simanjuntak, Simon Sembiring, Wan Abbas Zakaria, Kamisah D. Pandiangan
The Use Of Carbon Dioxide Released From Coconut Shell Combustion To Produce Na2co3, Wasinton Simanjuntak, Simon Sembiring, Wan Abbas Zakaria, Kamisah D. Pandiangan
Makara Journal of Science
In this investigation, sodium carbonate (Na2CO3) was produced by reacting the CO2 released from coconut shell combustion with NaOH solution with molar concentrations of 6.5, 7.0, 7.5, and 8.0 M. The main purpose of the study was to assess the potential of the proposed method for mitigation of the CO2 gas released into the atmosphere by the coconut shell industry. The Na2CO3 powder produced was oven-dried at 110 oC and subsequently characterized using FTIR, XRD, and SEM/EDS techniques. Thermal analysis was also carried out using DTA/TGA to investigate the thermal mechanisms of sodium carbonate formation. The experimental results show that …
Sansevieria Trifasciata Properties As Lead(Ii) Ion Biosorbent, Lela Mukmilah Yuningsih, Irmanida Batubara, Latifah Kosim Darusman
Sansevieria Trifasciata Properties As Lead(Ii) Ion Biosorbent, Lela Mukmilah Yuningsih, Irmanida Batubara, Latifah Kosim Darusman
Makara Journal of Science
Sansevieria trifasciata (also called snake plant or mother in law’s tongue) is predicted to act as a heavy metal biosorbent. S. trifasciata was optimized as a biosorbent by using the response surface method with varying weights of S. trifasciata, pH of Pb (II) solutions, contact times, and temperatures. The ion concentration before and after biosorption was measured with an atomic absorption spectrophotometer (AAS). The optimum biosorption conditions were pH 7, 240 min contact time, and 1.5 g biosorbent with biosorption capacity of Pb (II) ions 0.725 mg/g. The biosorption isotherm analysis showed that the biosorption is consistent with the Freundlich …
Detection Of Papua New Guinea Thalassemia Alpha Mutation In Gayo, Sumba, Ternate, And Timika Populations, Risya Nurfitriani, Abinawanto Abinawanto, Rintis Noviyanti, Lely Trianti, Ita M. Nainggolan
Detection Of Papua New Guinea Thalassemia Alpha Mutation In Gayo, Sumba, Ternate, And Timika Populations, Risya Nurfitriani, Abinawanto Abinawanto, Rintis Noviyanti, Lely Trianti, Ita M. Nainggolan
Makara Journal of Science
Papua New Guinea (PNG) mutation is a point mutation that occurs in noncoding region of alpha globin clusters. Polymorphism promotes an additional recognition site for transcription factor (GATA-1) which presumably downregulates alpha globin synthesis. The aim of this research is to detect PNG mutation in other populations in Indonesia, thus the results will be used for completing standard diagnoses in detecting alpha thalassemia mutation based on ethnic background. The method used in detecting PNG mutation was PCR-RFLP. Detection of 399 samples (MCH
Micromagnetic Simulation Of The Depinning Field Domain Wall On Symmetric Double Notch Ferromagnetic Wires, Dede Djuhana, Erwin Supriyanto, Dong Hyun Kim
Micromagnetic Simulation Of The Depinning Field Domain Wall On Symmetric Double Notch Ferromagnetic Wires, Dede Djuhana, Erwin Supriyanto, Dong Hyun Kim
Makara Journal of Science
In this paper, we investigate the depinning field domain wall on symmetric double notch ferromagnetic wires by means of micromagnetic simulation for Permalloy (Py), Cobalt (Co), and Nickel (Ni) materials. The depinning field domain wall increases as the size of the notch decreases. At a lower depinning field, the domain wall inner structure exhibited a transverse wall (TW), while at a higher depinning field, there was a transformation of the domain wall inner structure from transverse wall to antivortex wall (AVW). We also observed that the magnetization energy increased as the size of the notch decreased. This means that more …
Detection Of Submicroscopic Soil-Transmitted Helminth Infections From Fecal Samples In Nangapanda, Ende, Using Real-Time Polymerase Chain Reaction, Roospita Maylasari, Sendy Wulandhary, Taniawati Supali, Abinawanto Abinawanto
Detection Of Submicroscopic Soil-Transmitted Helminth Infections From Fecal Samples In Nangapanda, Ende, Using Real-Time Polymerase Chain Reaction, Roospita Maylasari, Sendy Wulandhary, Taniawati Supali, Abinawanto Abinawanto
Makara Journal of Science
Soil-transmitted helminth (STH) infections (Necator americanus (hookworm), Ancylostoma duodenale (hookworm), and Ascaris lumbricoides) can lead to anemia, malnutrition, and iron deficiency. Traditionally, STH infections have been diagnosed using microscopy to detect eggs in human fecal samples. However, there are several limitations of this method. The aim of this research was to detect the percentage of submicroscopic STH infections from human fecal samples (children, 5–18 years old) in Nangapanda, Ende, using the real-time polymerase chain reaction (PCR) method. The fecal samples were collected in two time periods, which were before and after treatment, using 400 mg of Albendazole. There were 242 …
Molecular Markers Application For Blast Resistance Selection On The Double Haploid Rice Population, Gut Windarsih, Dwinita Wikan Utami, Utut Widyastuti
Molecular Markers Application For Blast Resistance Selection On The Double Haploid Rice Population, Gut Windarsih, Dwinita Wikan Utami, Utut Widyastuti
Makara Journal of Science
Blast disease, caused by fungal Pyricularia grisea Sacc., is one of the most devastating diseases in rice. The use of blast-resistant rice varieties is one of the most efficient ways to control blast disease in rice. Blast-resistant varieties can be produced through breeding. The use of marker-assisted selection (MAS) available to support selection of resistant lines based on resistance gene. The objective of this research was to compare the resistance response of the double haploid lines with the differential varieties to three selected Indonesian blast races and to identify the resistance genes caused the resistance to blast based on the …
Synthesis Of Tris(4-Methoxyphenyl)Phenylsilane Using Phenylsilane And 4-Iodo Anisole Catalyzed By Palladium Complex, Aldes Lesbani, Risfidian Mohadi, Eliza Eliza, Mardiyanto Mardiyanto
Synthesis Of Tris(4-Methoxyphenyl)Phenylsilane Using Phenylsilane And 4-Iodo Anisole Catalyzed By Palladium Complex, Aldes Lesbani, Risfidian Mohadi, Eliza Eliza, Mardiyanto Mardiyanto
Makara Journal of Science
Sintesis Tris(4-Metoksifenil)Fenilsilan Menggunakan Fenilsilan dan 4-Iodida Anisol dengan Katalis Senyawa Kompleks Paladium. Sintesis tris(4-metoksifenil)fenilsilan melalui reaksi kopling antara fenilsilan dan 4-iodida anisol menggunakan senyawa paladium tersier tributilfosfin sebagai katalis telah dilakukan berdasarkan penentuan senyawa basa, pelarut, dan waktu reaksi kopling. Hasil penelitian menunjukkan bahwa senyawa tris(4-metoksifenil)fenilsilan dapat disintesis menghasilkan persentase produk maksimum pada penggunaan senyawa 1,4-diazabisiko[2,2,2]oktan (DABCO) sebagai basa, tetrahidrofuran sebagai pelarut, dan waktu reaksi kopling selama 5 hari. Persentase tertinggi produk senyawa tris(4-metoksifenil)fenilsilan adalah 35%.
Morphological And Molecular Analysis And Flowering Time Of T2 Generation Transgenic Rice Cv. Nipponbare Carrying Constans (Co) Gene, Firdha Meidi Irshanty, Andi Salamah, Tri Joko Santoso
Morphological And Molecular Analysis And Flowering Time Of T2 Generation Transgenic Rice Cv. Nipponbare Carrying Constans (Co) Gene, Firdha Meidi Irshanty, Andi Salamah, Tri Joko Santoso
Makara Journal of Science
Flowering is an important process that initiates plant productivity. Rice (Oryza sativa cv. Nipponbare) was genetically engineered by introducing a CONSTANS (CO) gene from Arabidopsis thaliana (AtCO) to improve rice productivity. The CO gene is a gene responsible for inducing early flowering. The aims of the experiment were to use morphological and molecular analysis to study the integration of the AtCO gene and its influence on agronomic traits in the T2 generation of Nipponbare transgenic AtCO rice. Morphological observations showed that agronomic traits tended to be better in the transgenic plants than in the wild type (controls), although the transgenic …
Two New Records Of Wild Bananas (Musa Balbisiana And Musa Itinerans) From Sulawesi, Lulut Dwi Sulistyaningsih, Rita Megia, Elizabeth Anita Widjaja
Two New Records Of Wild Bananas (Musa Balbisiana And Musa Itinerans) From Sulawesi, Lulut Dwi Sulistyaningsih, Rita Megia, Elizabeth Anita Widjaja
Makara Journal of Science
The diversity of wild banana species in Sulawesi was investigated based on the morphological characteristics of herbarium specimens collected in Sulawesi and deposited in the Herbarium Bogoriense, Bogor, Indonesia (BO). New specimens were collected from Central, North, South, and Southeast Sulawesi, and digital type specimens were also used in this study. The aim of this study was to describe the diversity of wild banana species in Sulawesi as most Musaceae specimens stored at BO have not been identified. By examinating 110 sheets of herbarium specimens, five species of Musa, including two infraspecific taxa of M. acuminata housed in Sulawesi, were …
Effectiveness Of Powder And Solid Ragi Starter On Production Of Bioethanol From Rice Straw Hydrolyzate, Wanda Ediviani, Silvi Octavia, Yasman Yasman
Effectiveness Of Powder And Solid Ragi Starter On Production Of Bioethanol From Rice Straw Hydrolyzate, Wanda Ediviani, Silvi Octavia, Yasman Yasman
Makara Journal of Science
Rice straw is one of the most abundant forms of agricultural wastes in Indonesia. Rice straw contains polysaccharide in the form of cellulose and hemicellulose, which can be used as raw materials in the production of bioethanol. This study aims to examine the effectiveness of bioethanol production from rice straw’s hydrolyzate. Research was carried out by fermenting the sample using two types of starters (Baker's yeast, known as powder starter (F); and Tapai’s starter, known as solid starter (S) with a control of pure yeast, Saccharomyces cerevisiae. Glucose levels were measured using a glucometer, and bioethanol levels were analyzed using …
Two New Records Of Wild Bananas (Musa Balbisiana And Musa Itinerans) From Sulawesi, Lulut Dwi Sulistyaningsih, Rita Megia, Elizabeth Anita Widjaja
Two New Records Of Wild Bananas (Musa Balbisiana And Musa Itinerans) From Sulawesi, Lulut Dwi Sulistyaningsih, Rita Megia, Elizabeth Anita Widjaja
Makara Journal of Science
The diversity of wild banana species in Sulawesi was investigated based on the morphological characteristics of herbarium specimens collected in Sulawesi and deposited in the Herbarium Bogoriense, Bogor, Indonesia (BO). New specimens were collected from Central, North, South, and Southeast Sulawesi, and digital type specimens were also used in this study. The aim of this study was to describe the diversity of wild banana species in Sulawesi as most Musaceae specimens stored at BO have not been identified. By examinating 110 sheets of herbarium specimens, five species of Musa, including two infraspecific taxa of M. acuminata housed in Sulawesi, were …
Construction And Characterization Of Conductometric Biosensor For Determination Of The Diazinon Concentration, Indrajid Prayoga, Ani Mulyasuryani, Sasangka Prasetyawan
Construction And Characterization Of Conductometric Biosensor For Determination Of The Diazinon Concentration, Indrajid Prayoga, Ani Mulyasuryani, Sasangka Prasetyawan
Makara Journal of Science
Excessive diazinon residue in vegetables can endanger human health. Therefore, a simple, fast, and accurate method is needed to detect residue. A conductometric biosensor is a good choice because it also offers high selectivity and sensitivity. The principle of detection of the conductometric biosensor is based on enzymatic hydrolysis of diazinon into O,O diethyl phosphorothiate,2-isopropyl-6-methylpyrimidin-4-ol, and H+ catalyzed by organophosphate hydrolase (OPH). The optimum amount of organophosphate hydrolase added to the screen-printed carbon electrode (SPCE) modified with BSA-glutaraldehyde is 118.5 µg, while the optimum pH is 8.5. This biosensor has a response time of 30 sec, a linear dynamic range …
Construction And Characterization Of Conductometric Biosensor For Determination Of The Diazinon Concentration, Indrajid Prayoga, Ani Mulyasuryani, Sasangka Prasetyawan
Construction And Characterization Of Conductometric Biosensor For Determination Of The Diazinon Concentration, Indrajid Prayoga, Ani Mulyasuryani, Sasangka Prasetyawan
Makara Journal of Science
Excessive diazinon residue in vegetables can endanger human health. Therefore, a simple, fast, and accurate method is needed to detect residue. A conductometric biosensor is a good choice because it also offers high selectivity and sensitivity. The principle of detection of the conductometric biosensor is based on enzymatic hydrolysis of diazinon into O,O diethyl phosphorothiate,2-isopropyl-6-methylpyrimidin-4-ol, and H+ catalyzed by organophosphate hydrolase (OPH). The optimum amount of organophosphate hydrolase added to the screen-printed carbon electrode (SPCE) modified with BSA-glutaraldehyde is 118.5 µg, while the optimum pH is 8.5. This biosensor has a response time of 30 sec, a linear dynamic range …
Effectiveness Of Powder And Solid Ragi Starter On Production Of Bioethanol From Rice Straw Hydrolyzate, Wanda Ediviani, Silvi Octavia, Yasman Yasman
Effectiveness Of Powder And Solid Ragi Starter On Production Of Bioethanol From Rice Straw Hydrolyzate, Wanda Ediviani, Silvi Octavia, Yasman Yasman
Makara Journal of Science
Rice straw is one of the most abundant forms of agricultural wastes in Indonesia. Rice straw contains polysaccharide in the form of cellulose and hemicellulose, which can be used as raw materials in the production of bioethanol. This study aims to examine the effectiveness of bioethanol production from rice straw’s hydrolyzate. Research was carried out by fermenting the sample using two types of starters (Baker's yeast, known as powder starter (F); and Tapai’s starter, known as solid starter (S) with a control of pure yeast, Saccharomyces cerevisiae. Glucose levels were measured using a glucometer, and bioethanol levels were analyzed using …
Morphological And Molecular Analysis And Flowering Time Of T2 Generation Transgenic Rice Cv. Nipponbare Carrying Constans (Co) Gene, Firdha Meidi Irshanty, Andi Salamah, Tri Joko Santoso
Morphological And Molecular Analysis And Flowering Time Of T2 Generation Transgenic Rice Cv. Nipponbare Carrying Constans (Co) Gene, Firdha Meidi Irshanty, Andi Salamah, Tri Joko Santoso
Makara Journal of Science
Flowering is an important process that initiates plant productivity. Rice (Oryza sativa cv. Nipponbare) was genetically engineered by introducing a CONSTANS (CO) gene from Arabidopsis thaliana (AtCO) to improve rice productivity. The CO gene is a gene responsible for inducing early flowering. The aims of the experiment were to use morphological and molecular analysis to study the integration of the AtCO gene and its influence on agronomic traits in the T2 generation of Nipponbare transgenic AtCO rice. Morphological observations showed that agronomic traits tended to be better in the transgenic plants than in the wild type (controls), although the transgenic …
Synthesis Of Tris(4-Methoxyphenyl)Phenylsilane Using Phenylsilane And 4-Iodo Anisole Catalyzed By Palladium Complex, Aldes Lesbani, Risfidian Mohadi, Eliza Eliza, Mardiyanto Mardiyanto
Synthesis Of Tris(4-Methoxyphenyl)Phenylsilane Using Phenylsilane And 4-Iodo Anisole Catalyzed By Palladium Complex, Aldes Lesbani, Risfidian Mohadi, Eliza Eliza, Mardiyanto Mardiyanto
Makara Journal of Science
Sintesis Tris(4-Metoksifenil)Fenilsilan Menggunakan Fenilsilan dan 4-Iodida Anisol dengan Katalis Senyawa Kompleks Paladium. Sintesis tris(4-metoksifenil)fenilsilan melalui reaksi kopling antara fenilsilan dan 4-iodida anisol menggunakan senyawa paladium tersier tributilfosfin sebagai katalis telah dilakukan berdasarkan penentuan senyawa basa, pelarut, dan waktu reaksi kopling. Hasil penelitian menunjukkan bahwa senyawa tris(4-metoksifenil)fenilsilan dapat disintesis menghasilkan persentase produk maksimum pada penggunaan senyawa 1,4-diazabisiko[2,2,2]oktan (DABCO) sebagai basa, tetrahidrofuran sebagai pelarut, dan waktu reaksi kopling selama 5 hari. Persentase tertinggi produk senyawa tris(4-metoksifenil)fenilsilan adalah 35%.