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All Journal VALENSI Alchemy Jurnal Penelitian Kimia Indonesian Journal of Chemical Science ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemical Analysis (IJCA) Molekul: Jurnal Ilmiah Kimia Molekul: Jurnal Ilmiah Kimia Bulletin of Chemical Reaction Engineering & Catalysis
Fajar Rakhman Wibowo
Departmen Of Chemistry, Faculty Of Mathematics And Natural Sciences, Sebelas Maret State University, Surakarta
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology

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CYTOTOXICITY EXTRACT OF RED FRUIT (Pandanus Conoideus Lamk.) WITH BRINE SHRIMP LETHALITY TEST Marliyana, Soerya D.; W, Fajar Rakhman; H, Nestri; Rakhmawati, Rita
Alchemy Jurnal Penelitian Kimia Vol 8, No 1 (2012)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

The cytotoxicity with Brine Shrimp Lethality Test (BSLT) extract of red fruit (Pandanus conoideus Lamk.) have been done. The ethanol and n-hexana extracts were evaluated for cytotoxicities. The n-hexane extract demonstrated higher cytotoxic activity than the ethanol extract, with 54% death in concentration 400 ?g/mL. The n-hexane extract was separated by column chromatography, eluting with a gradient of n-hexane-EtOAc to had an active fraction. The cytotoxicity of an active fraction showed with LC50 values of 138,05 µg/mL. Identification of this fraction exhibited three compounds of fatty acid were palmitic acid, oleic acid, and miristic acid
UJI TOKSISITAS SECARA BRINE SHRIMP LETHALITY EKSTRAK BUAH MERAH (Pandanus Conoideus Lamk.) Marliyana, Soerya D.; Rakhman W, Fajar; Handayani, Nestri; Rakhmawati, Rita
Alchemy Jurnal Penelitian Kimia Vol 8, No 2 (2012)
Publisher : Alchemy Jurnal Penelitian Kimia

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Telah dilakukan uji toksisitas secara Brine Shrimp Lethality Test (BSLT) ekstrak buah merah (Pandanus Conoideus Lamk.). Uji toksisitas dilakukan pada ekstrak etanol dan n-heksana. Hasil uji BSLT menunjukkan rata-rata prosentase kematian ekstrak n-heksan lebih tinggi dibandingkan dengan ekstrak etanol, sebesar 54 % diukur pada konsentrasi 400 (μg/mL). Ekstrak n-heksan selanjutnya dilakukan pemisahan secara kromatografi kolom dengan elusi secara gradien menggunakan pelarut campuran n-heksana-etil asetat untuk memperoleh fraksi aktif. Uji toksisitas secara BSLT menunjukkan fraksi aktif mempunyai nilai LC50 sebesar 138,05 μg/mL. Identifikasi fraksi aktif diperoleh 3 komponen senyawa asam lemak yaitu asam palmitat, asam oleat dan asam miristat.Kata Kunci : Buah merah (Pandanus conoideus Lamk.), identifikasi, toksisitas, Brine Shrimp LethalityABSTRACT
SINTESIS β-KARIOFILENA METIL ETER DENGAN KATALIS BF3.O(C2H5)2 DALAM MEDIUM METANOL M, Soerya Dewi; W, Fajar Rakhman; ., Purwanti
Alchemy Jurnal Penelitian Kimia Vol 1, No 2 (2002)
Publisher : Alchemy Jurnal Penelitian Kimia

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Telah dilakukan penelitian terhadap reaksi adisi metanol pada ?-kariofilena dengan katalis BF3.O(C2H5)2dalam medium metanol. Reaksi dilakukan pada suhu 45oC, 55oC, dan 65oC. Waktu reaksi 3 jam dilakukan pada suhu 45oC dan 55oC, sedangkan waktu reaksi 2, 3, 4 dan 6 jam dilakukan pada suhu 65oC. Ekstrak dianalisis dengan Kromatografi Lapis Tipis (KLT) dan Kromatografi Gas  (GC). Identifikasi produk dominan dilakukan dengan Spektroskopi Infra Merah (IR) dan Kromatografi Gas-Spektroskopi Massa (GC-MS). Hasil analisis GC menunjukkan bahwa reaksi pada suhu 65oC dengan waktu reaksi 4 jam menghasilkan produk utama sebesar 33,67%. Identifikasi produk utama merupakan senyawa ?-kariofilena metal eter.
ISOLASI DAN IDENTIFIKASI KOMPONEN PRODUK UTAMA REAKSI ADISI β-KARIOFILENA DENGAN MENGGUNAKAN BF3.CH3OH Marliana, Soerya Dewi; Wibowo, Fajar Rakhman; Prayoga, Teddy
Alchemy Jurnal Penelitian Kimia Vol 3, No 2 (2004)
Publisher : Alchemy Jurnal Penelitian Kimia

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Telah dilakukan isolasi dan identifikasi komponen produk utama dari reaksi adisi ?-kariofilena dengan menggunakan BF3.CH3OH. Kondisi reaksi dilakukan pada suhu 65o dan waktu refluk selama 9 jam. Isolasi produk komponen utama dilakukan dengan metoda kromatografi kolom sedangkan identifikasinyadilakukan dengan kromatografi gas (GC), spektometer inframerah (IR) dan kromatografi gas-spektrometri massa (GC-MS).Hasil isolasi diperoleh cairan berwarna coklat kekuningan dengan aroma woody. Analisis produk utama dari hasil isolasi dengan menggunakan GC diperoleh konsentrasi relatif sebesar 36,24%, sedangkan spektrum IR menunjukkan adanya serapan pada daerah 2866-2927,7cm-1, 1458 cm-1, 1377,1 cm-1 dan 1076,6 cm-1 yang masing-masing merupakan serapan dari gugus fungsi hidrokarbon (C-H, -CH3 dan –CH2-) dan eter (C-O-C). Hasil analisis spektra GC-MS menunjukkan ion molekuler (m/e) sebesar   236 dan mempunyai puncak dasar 125. Berdasarkan ketiga analisis tersebut maka produk utama diduga senyawa kariolana metil eter.
REAKSI ADISI METANOL TERHADAP β-KARIOFILENA DENGAN KATALIS AlCl3 Kusumaningsih, Triana; Wibowo, Fajar Rakhman; Triambodo, Ali
Alchemy Jurnal Penelitian Kimia Vol 3, No 1 (2004)
Publisher : Alchemy Jurnal Penelitian Kimia

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Telah dilakukan reaksi adisi methanol terhadap ? -karioflena dengan menggunakan katalis asam lewis AlCl3. Hasil yang diharapkan dari reaksi ini adalah diperoleh senyawa ? -kariofilena yaitu ?-kariofilena metal eter yang bermanfaat dalam industri obat dan parfum.Reaksi adisi metanol tehadap ?-kariofilena dilakukan pada variasi suhu 27oC, 50oC dan 62,5oC serta variasi waktu refluks selam 2 jam, 4 jam dan 6 jam. Produk dominan yang dihasilkan dari reaksi ini berupa senyawa kariofilena metal eter. Hasil analisis dengan kromatografi gas menunjukkan bahwa produk kariofilena metil eter terbanyak pada suhu 62,5oC dalam waktu 6 jam yaitu sebesar 25,22%. Produk samping yang menarik untuk dianalisis adalah produk berupa kariofilena alkohol. Hail kromatografi kolom yang diikuti analisis dengan kromatografi gas dan spektrofotometer IR diperoleh dua produk kariofilena alkohol yang berebtuk cairan berwarna kuning bening dan Kristal berbentuk jarum yang berwarna putih. Struktur kariofilena alkohol belum dapat ditentukan karena keterbatasan dat-data yang ada.
MODIFIKASI Y220C PADA RESIDU 220 OLEH ADDUCT PRIMA-SISTEIN MERESTORASI Y220C PADA RESIDU 120 C, Angeline Prita; Wibowo, Fajar Rakhman
Indonesian Journal of Chemical Science Vol 3 No 2 (2014)
Publisher : Indonesian Journal of Chemical Science

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Abstract

Mutasi tirosin pada residu 220 menjadi sistein (Y220C) dapat menginduksi cavity pada residu 220 sebagai pusatnya. Mutasi ini dapat menurunkan kestabilan termal dan menyebabkan adanya sedikit perubahan pada bagian kontak DNA. p53 reactivation and induction of massive apoptosis-1 (PRIMA-1) terbukti dapat mereaktivasi p53, namun mekanisme dan target residunya belum cukup jelas. Fakta eksperimen menunjukkan PRIMA-1 dapat modifikasi sistein dengan membentuk adduct. Penelitian ini ditujukan untuk mengamati efek dinamis modifikasi sistein menggunakan PRIMA-1, yang disebut adduct PRIMA-sistein pada residu 220 untuk mereaktivasi p53. Modifikasi Y220C dilakukan dengan memaksa adduct PRIMA-sistein masuk ke dalam cavity yang berukuran lebih kecil dibanding struktur adduct tersebut. Pengamatan stabilitas pada level molekuler dilakukan dengan cara simulasi dinamika molekuler (DM). Trajektori-Trajektori yang dihasilkan simulasi dinamika molekul selama 100ns menunjukkan perubahan  dinamika karena adanya modifikasi Y220C pada residu nomor 220. Data Backbone B-factor dan order parameter menunjukkan bahwa  adanya modifikasi Y220C sebagian mampu menyerupai wild type pada residu 120 yang merupakan daerah yang berfungsi untuk interaksi dengan DNA. Selain itu, pada residu 155 yang berinteraksi langsung dengan residu 220 juga terdapat peningkatan fleksibilitas residu 155 setelah adanya modifikasi Y220C.
Cation Sensing Capabilities of A Nitrophenyl Cinnamaldehyde Derivative Suryanti, Venty; Wibowo, Fajar Rakhman; Marzuki, Ahmad; Sari, Meiyanti Ratna Kumala
Molekul Vol 15, No 3 (2020)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.005 KB) | DOI: 10.20884/1.jm.2020.15.3.654

Abstract

The cationic chemosensor based on organic compound bearing an aminophenol moiety as a receptor for metal analyte and a cinnamaldehyde moiety as chromophoric fragment has been developed. In this work, we report the colorimetric sensing of nitrophenyl cinnamaldehyde derivative, namely methyl-3-(2-hidroxy-5-nitrophenyl amino)-3-phenylpropanoate, towards a variety of metal cations, such as Cu2+, Fe3+, Ni2+ and Zn2+. The cation sensing abilities of the sensor were observed for Cu2+and Fe3+ with a color change from colorless to pink and faint yellow, respectively, The characteristic UV-Vis spectra changes were observed upon addition of Cu2+and Fe3+ cations. The hypsochromic absorption spectra shifts were obtained, indicating the cations and sensor complexations had formed. A metal-to-ligand-charge-transfer (MLCT) had occurred and the charge density of the sensor changed resulting in appearance of new absorption peaks in the UV-Vis spectra and color changes of the sensor solution upon addition of the Cu2+and Fe3+.  
Isolasi dan Identifikasi Senyawa Seskuiterpen dari Curcuma soloensis Val. (Temu Glenyeh) Soerya Dewi Marliyana; Muhamad Widyo Wartono; Fajar Rakhman Wibowo; Gesti Munasah
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 4, No. 2, November 2018
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (729.169 KB) | DOI: 10.15408/jkv.v4i2.7443

Abstract

Curcuma soloensis Val. is a family plant Zingiberaceae and is known as "temu gelnyeh". This plant has been used as a medicinal plant but has not been widely reported about its chemical components. Therefore, this study was carried out to isolation and identification of the chemical components of the C. soloensis Val. rhizome. Isolation was done by extraction, fractionation, and purification. The fractionation and purification of the compound were carried out using chromatography methods. The identification of the compound was determined by spectroscopic methods including 1D-NMR (1H NMR, 13C NMR) and 2D-NMR (HSQC, HMBC). Based on NMR spectra data analysis and compared with literature, the compound obtained yellow liquid was ar-turmerone (2-methyl-6- (4-methylphenyl) hept-2-en-4-on) which was a terpenoid sesquiterpene. Ar-turmerone is the first compound that found from Curcuma soloensis Val. rhizome.  
Fe/Indonesian Natural Zeolite as Hydrodeoxygenation Catalyst in Green Diesel Production from Palm Oil Riandy Putra; Witri Wahyu Lestari; Fajar Rakhman Wibowo; Bambang Heru Susanto
Bulletin of Chemical Reaction Engineering & Catalysis 2018: BCREC Volume 13 Issue 2 Year 2018 (August 2018)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.13.2.1382.245-255

Abstract

The Petroleum diesel-based fossil fuel remains the primary source of energy consumption in Indonesia. The utilization of this unrenewable fuel depletes fossil fuels; thus, an alternative, renewable fuel, such as one based on biohydrocarbon from biomass-green diesel-could be an option. In this work, green diesel was produced through the hydrodeoxygenation from palm oil and processed in a batch-stirred autoclave reactor over natural zeolite (NZ) and NZ modified with 3 wt.% Fe metal (Fe/NZ) as heterogeneous catalyst. NZ showed high crystallinity and suitability to the simulated pattern of the mordenite and clinoptilolite phases according to X-ray diffraction (XRD) analysis. The presence of Fe metal was further confirmed by XRD, with an additional small diffraction peak of Fe0 that appeared at 2θ = 44-45°. Meanwhile, NZ and Fe/NZ were also characterized by Scanning electron microscopy (SEM) with Energy Dispersive X-ray (EDX), X-ray Fluorescence (XRF), and Surface Area Analyzer (SAA). The obtained materials were tested for the conversion of palm oil into diesel-range hydrocarbons (C15-C18) under conditions of 375 °C and 12 bar H2 for 2 h. NZ and Fe/NZ produced a liquid hydrocarbon with straight-chain (C15-C18) alkanes as the most abundant products. Based on Gas Chromatography-Mass Spectrometry (GC-MS) measurement, a higher conversion of palm oil into diesel-like hydrocarbons reached more than 58% and 89%, when NZ and Fe modified NZ (Fe/NZ), respectively were used as catalysts. 
Synthesis and Characterization of Anethole-lauryl Methacrylate Copolymer via Cationic Polymerization Handayani, Desi Suci; Tahara, Alfia Uke; Firdaus, Maulidan; Suryanti, Venty; Kusumaningsih, Triana; Marliyana, Soerya Dewi; Wibowo, Fajar Rakhman; Wartono, Muhammad Widyo
Molekul Vol 18 No 3 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.3.7078

Abstract

The synthesis of anethole-lauryl methacrylate (LMA) copolymer had been carried out by cationic polymerization using BF3O(C2H5)2 as the initiator without the use of solvent at room temperature (28-30 °C) over atmospheric N2 conditions. Polymerization was conducted by varying LMA concentration i.e. 2%, 4%, and 6%, (w/w) with respect to the anethole weight. Structural determination of co-poly(anethole-LMA) was done using FTIR and 1H-NMR spectrophotometer. The relative molecular weight (Mv) of co-poly (anethole-LMA) was measured by an Ostwald Viscometer at room temperature. Morphological characterization and surface area analysis of co-poly(anethole-LMA) was performed using SEM and SAA, respectively. The successful synthesis of co-poly(anethole-LMA) was proven by the disappearance of vinyl group absorption at 1696, 1638, 965, and 938 cm-1 of the FTIR spectra, as well as the loss of vinyl group proton signals at 6.4-5.5 ppm in the 1H-NMR spectra. Increasing the weight of the LMA affected the characteristics of co-poly(anethole-LMA). The relative molecular weight of co-poly(anethole-LMA) was found to rise by increasing the weight of LMA. The Mv of co-poly(anethole-LMA) 2%, 4%, and 6% were 32378.62, 50611.05, and 65133.79 g/mol, respectively. The morphology of co-poly(anethole-LMA) showed that the surface distance between particles was getting tighter and the highest surface area in co-poly(Anethole-LMA) 6% was 233.80 m2/g.
Co-Authors Ali Triambodo, Ali Angeline Prita C, Angeline Prita Annisa Istiqomah, Annisa Bambang Heru Susanto, Bambang Heru Desi Suci Handayani Elfi Susanti V. H. Elfrida Ratnawati Gesti Munasah Hilmi Amirul Haq Husna Habib Musthofa Irmawan, Muhammad Lestari, Nova Dwi Maulidan Firdaus Muhamad Widyo Wartono Muhammad Nursyam Maulana Nestri H, Nestri Nestri Handayani, Nestri Ozi Adi Saputra, Ozi Adi Puput Veronikasari Purwanti . Riandy Putra Rita Rakhmawati, Rita Rossalia Soraya Safitriono, Wahyu Nur Samodra, Imam Sari, Meiyanti Ratna Kumala Soerya Dewi M, Soerya Dewi Soerya Dewi Marliana, Soerya Dewi Soerya Dewi Marliyana Soerya Dewi Marliyana Sri Mulyani Tahara, Alfia Uke Teddy Prayoga, Teddy Tonang Dwi Ardyanto Triana Kusumaningsih Venty Suryanti Witri Wahyu Lestari