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All Journal Jurnal Matematika & Sains Bulletin of Chemical Reaction Engineering & Catalysis The Journal of Pure and Applied Chemistry Research Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences World Chemical Engineering Journal EduChemia: Jurnal Kimia dan Pendidikan PENELITIAN DAN KARYA ILMIAH PROSIDING SEMINAR NASIONAL CENDEKIAWAN Indonesian Journal of Chemistry Prosiding Seminar Nasional Pakar CHEESA: Chemical Engineering Research Articles JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Tedc Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti Bulletin of Chemical Reaction Engineering & Catalysis al Kimiya : Jurnal Ilmu Kimia dan Terapan
Deana Wahyuningrum
Institut Teknologi Bandung
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Hasil Studi Laboratorium Penentuan Karakteristik Alamiah Surfaktan Natrium Lignosulfonat Dari Ampas Tebu Sebagai Fluida Injeksi Di Reservoir Minyak Rini Setiati; Septoratno Siregar; Taufan Marhaendrajana; Deana Wahyuningrum
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Vol. 3 No. 1 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (169.039 KB) | DOI: 10.25105/pdk.v3i1.2483

Abstract

Surfaktan Natrium Lignosulfonat (NaLS) dari ampas tebu merupakan salah satu pengembangan surfaktan lignosulfonat yang dibuat dari limbah nabati, yaitu adalah ampas tebu. Pada studi ini telah diperoleh hasil sintesa ampas tebu menjadi surfaktan lignosulfonat yang jika dikembangkan akan dapat menjadi alternatif surfaktan sebagai fluida injesi di reservoir minyak. Dari hasil penelitian dan pengujian yang telah dilakukan, surfaktan NaLS ampas tebu ini mempunyai kesamaan komponen dengan surfaktan lignosulfonat standar yaitu terdiri dari gugus ulur alkena, gugus ulur sulfonat, gugus tekuk karboksilat dan gugus tekuk ester. Berdasarkan analisis spektrum NMR, molekul monomer lignosulfonat tersebut mempunyai atom C, O, H dan S di dalam dengan jumlah atom C = 11, O = 8, H = 16, dan S = 1, sehingga rumus empiris monomer lignosulfonat adalah (C11H16O8S)n, dengan massa molekul relatif 308,06. Berdasarkan struktur monomer lignosulfonat ampas tebu, maka gugus-gugus fungsi dalam strukturnya dapat dikelompokkan sebagai gugus hidrofil atau gugus hidrofob dan dapat dihitung nilai HLB (Hidrofil-lipofilik Balance) yang dimiliki oleh surfaktan NaLS ampas tebu tersebut yaitu sebesar 11,62. Dengan nilai HLB ini maka surfaktan NaLS ampas tebu ini sesuai penggunaannya sebagai sistem tipe emulsi O/W (oil in water), yang berarti surfaktan tersebut larut dalam air dan dapat digunakan sebagai fluida injeksi.
POTENSI KEBERHASILAN KULIT UDANG SEBAGAI BAHAN DASAR POLIMER KITOSAN: STUDI LITERATUR Rini Setiati; Septoratno Siregar; Deana Wahyuningrum; M. Taufik Fathaddin
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Vol. 6 No. 1 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1227.178 KB) | DOI: 10.25105/pdk.v6i1.8637

Abstract

Tujuan dari penelitian ini adalah untuk mempelajari potensi yang dimiliki oleh kulit udang sebagai bahan baku polimer kitosan.  Penelitian ini diawali dengan proses pemisalahan kulit udang kitin dan proses kitin menjadi kitosan serta menguji karakteristiknya. Kulit udang dapat diolah menjadi kitosan karena kandungan kitin yang terdapat di dalamnya.  Kitin merupakan bahan organik utama terdapat pada kelompok hewan crustacea, insekta, fungi, mollusca dan arthropoda. Cangkang kepiting, udang dan lobster juga merupakan sumber bahan dasar produksi kitin karena kandungan kitinnya cukup tinggi. Kitin merupakan biopolimer alam paling melimpah kedua setelah selulosa yang tidak beracun dan diproduksi dari limbah kulit udang. Kitosan diolah dari kulit udang melalui proses deproteinasi, demineralisasi dan deasetilasi. Reagen yang digunakan adalah NaOH dan KOH. Kemudian kitosan diuji sifat fisiknya melalui uji kadar air, kadar abu, kadar nitrogen, viskositas, derajat deasetilasi, analisis gugus fungsi dengan spektroskopi IR dan kristalinitas dengan difraksi sinar X. Sifat fisik kitosan dilihat dari bentuk fisik, analisis gugus fungsi dan kristalinitas. Potensi penerapan kitosan, sebagai turunan kitin yang terdeasetilasi, bersifat multidimensi, seperti dalam makanan dan gizi, bioteknologi, ilmu material, obat-obatan dan farmasi, pertanian dan perlindungan lingkungan. Isolasi kitin dari kulit udang dan sintesanya menjadi kitosan, menjadikan kulit udang lebih barmanfaat untuk bidang-bidang lain. Kulit udang yang diolah menjadi kitosan polimer dapat berpotensi untuk digunakan dalam bidang Enhanced Oil Recovery sebagai fluida injeksi kimiawi dalam upaya menaikkan produksi minyak.
Synthesis and Characterization of Molecularly Imprinted Polymers (MIPs) Using Humic Acid Tikarahayu Putri; Muhammad Ali Zulfikar; Deana Wahyuningrum; Iwan Syahjoko Saputra
The Journal of Pure and Applied Chemistry Research Vol 11, No 3 (2022): Edition September-December 2022
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2022.011.03.656

Abstract

MIPs was synthesized through microwave assisted organic synthesis (MAOS) method by using methyl methacrylate (MMA) as functional monomer, ethylene glycol dimethacrylate (EGDMA) as cross-linker, benzoyl peroxide (BPO) as initiator, N,N-dimethyl formamide (DMF) as porogen solvent, and (HA) as template. The MIPs was successfully synthesized according to the characterization using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), electron dispersive spectrometer (EDS), and UV spectrophotometer. FTIR shows the other functional groups peaks in the FTIR spectra of NIPs and MIPs after leaching were appeared at the wavelength of 2955 cm-1 corresponded to stretching vibration of C-H of 1459 cm-1 and 1160.06 cm-1 corresponded to the vibration bands of CH3 and O-CH3. EDS shows the MIPs after leaching have the elemental compositions of C, O, and Si with a mass of 78.34, 21.43, and 0.23%. UV spectrum shows the MIPs and NIPs have absorbance values of 0.36 nm and 0.44 nm
The Microwave-assisted Synthesis of Polyethersulfone (PES) as A Matrix in Immobilization of Candida antarctica Lipase B (Cal-B) Khusna Widhyahrini; Nurrahmi Handayani; Deana Wahyuningrum; Santi Nurbaiti; Cynthia Linaya Radiman
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.3.774.343-350

Abstract

Candida antarctica lipase B (Cal-B) has been widely used in the hydrolysis reaction. However, it has some weaknesses, such as: forming of the heavy emulsion during the process, which is difficult to resolve and has no reusability. Therefore, it needs to be immobilized into a suitable matrix. One of the suitable supporting materials is polyethersulfone (PES) and its synthesis becames the objective of this paper. The PES was synthesized via a polycondensation reaction between hydroquinone and 4,4'-dichlorodiphenylsulfonein N-methylpyrrolidone (NMP) as solvent using Microwave Assisted Organic Synthesis (MAOS) method at170 °C for 66 minutes using an irradiation power of 300 watt. The synthesized PES was characterized by FTIR and 1H-NMR (500 MHz, DMSO-d6). Then the PES membrane was prepared from 20 % of the optimized mixtures of PES, PSf (polysulfone), and PEG (polyethylene glycol) dissolved in 80 % NMP.  The Cal-B was immobilized on the PES membrane by mixing it in a shaker at 30 °C and 100 rpm for 24 h using phosphate buffered saline (PBS). The identification of the immobilized Cal-B was done by using FTIR-ATR spectroscopy and SEM micrographs. The results of Lowry assay showed that the ‘Cal-B immobilized’ blended-membrane has a loading capacity of 91 mg/cm2 in a membrane surface area of 17.34 cm2. In this work, the activity of immobilized Cal-B was twice higher than the native enzyme in p-NP (p-Nitrophenolpalmitate) hydrolyzing. The results indicated that the synthesized PES showed a good performance when used as a matrix in the immobilization of Cal-B. 
Green Synthesis of [EMIm]Ac Ionic Liquid for Plasticizing MC-based Biopolymer Electrolyte Membranes Sun Theo Constan Lotebulo Ndruru; Deana Wahyuningrum; Bunbun Bundjali; I Made Arcana
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 2 Year 2019 (August 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.2.3074.345-357

Abstract

Lithium-ion batteries (LIBs) are favorable power source devices at the last two decades, owing to high energy density, rechargeable, long life cycle, portable, safe, rechargeable, good performance and friendly environment. To support their development, in this research has been successfully prepared polymer electrolyte membrane, a main component of LIBs, based on 1-ethyl-3-methylimidazolium acetate ([EMIm]Ac) ionic liquid-plasticized methyl cellulose/lithium perchlorate (MC/LiClO4). [EMIm]Ac ionic  liquid was easy synthesized by metathesis reaction between 1-ethyl-3-methylimidazolium bromide ([EMIm]Br) ionic liquid and potassium acetate (CH3COOK) at ambient temperature, for 1 hour. [EMIm]Ac ionic liquid was functional groups analyzed with Fourier Transform Infra-red (FT-IR) and structural analyzed with 1H-Nuclear Magnetic Resonance (NMR) and 13C-NMR. [EMIm]Ac ionic liquid-plasticized MC/LiClO4 biopolymer electrolyte membrane was prepared by casting solution, with [EMIm]Ac ionic liquid content, 0, 5, 10, 15, 20, 25, and 30% (w/w). Effect of 15% (w/w) [EMIm]Ac ionic liquid incorporation to MC/LiClO4 showed the best condition and selected as the optimum condition with conductivity, tensile strength, elongation break, and thermal stability of 9.160×10-3 S.cm-1, 24.19 MPa, 36.43%, ~256 and ~370 ºC, respectively. These results confirm that [EMIm]Ac ionic liquid can plasticize biopolymer electrolyte membranes of MC/LiClO4 to be appealing performances to fulfill the LIB’s separator requirement. Copyright © 2019 BCREC Group. All rights reserved 
Sintesis Membran Komposit Berbahan Dasar Kitosan dengan Metoda Sol-Gel sebagai Membran Fuel Cell Pada Suhu Tinggi Nila Tanyela Berghuis; Muhammad Ali Zulfikar; Deana Wahyuningrum
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 7, No 1 (2020): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v7i1.6614

Abstract

Kitosan adalah polisakarida kationik yang terdiri dari residu glukosamin dan N-asetil glukosamin yang terikat oleh ikatan β-1,4 glikosidik. Keberadaan gugus alkohol bebas pada kerangka kitosan dapat dimanfaatkan sebagai gugus pembentuk matrik dengan atom lainnya, dalam penelitian ini adalah silika (Si). Kondisi ini dapat dimanfaatkan sebagai bahan dasar sintesis membran sel bahan bakar (Fuel Cell). Sintesis kitosan dilakukan dengan mendeasetilasi kitin yang bersumber dari limbah kulit udang. Membran komposit kitosan-TEOS (Tetraetilortosilikat) telah berhasil disintesis dengan menggunakan variasi nilai konsentrasi kitosan terhadap jumlah TEOS. Membran komposit kitosan-TEOS disintesis dengan menggunakan metoda sol-gel dan pembalikan fasa. Kitosan dan membran komposit yang dihasilkan kemudian dikarakterisasi sifat kimia dan fisika nya yaitu penentuan derajat deasetilasi, penentuan berat molekul rata-rata (Mv), persen kelarutan, analisis struktur dengan menggunakan FTIR, uji ketahanan suhu, analisis morfologi dengan menggunakan SEM, dan kapasitas pertukaran ion (KPI). Hasil karakterisasi menunjukkan derajat deasetilasi kitosan sebesar 79,31% dengan nilai berat molekul rata-rata (Mv) 1,16 x 107 g/mol dan persen kelarutan 1% (v/v) asam asetat. Hasil pengukuran FTIR membran menunjukkan terdapat puncak 1377 cm-1 yang merupakan puncak dari eter siklik, puncak 3454 cm-1 yang merupakan puncak dari O-H, puncak pada 1662-1666 cm-1 yang merupakan puncak dari C=O asetamida, dan 3454-3500 cm-1 yang merupakan puncak N-H, sedangkan puncak 904 cm-1 dan 1091,7 cm-1 menunjukkan adanya ikatan silang antara Si-OH dan Si-O-C (alifatik). Uji ketahanan membran terhadap suhu sebesar 120oC sedangkan nilai konduktivitas ionik terbesar dimiliki oleh tipe membran CTSN-1,5 dengan nilai 0,114 meq/g. Hasil analisis SEM menunjukkan bahwa membran mempunyai struktur yang rapat.
Lessons Learned in Interfacial Tension Prediction Using a Mixture of Sulfonate- and Ethoxylate-based Surfactants in a Waxy Oil-brine System Rani Kurnia; Dian Asfriany Nurfalah; Deana Wahyuningrum; Taufan Marhaendrajana; Utjok W.R Siagian
Journal of Engineering and Technological Sciences Vol. 55 No. 6 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.6.1

Abstract

The chemical-enhanced oil recovery (CEOR) method is applied to change reservoir rock or fluid characteristics by injecting alkaline, surfactant, and polymer or a combination of two or three of the compounds. Surfactant flooding improves oil recovery by reducing the interfacial tension between oil and water. Selecting reservoir surfactants, especially microemulsions, requires careful screening. This study predicted waxy oil system interfacial tension using surfactant mixtures at below- and above-optimum salinity. To predict the interfacial tension, microemulsion types, HLB, ideal salinity, and HLD were used. The study predicted oil-surfactant-water interfacial tension using SAE, FEO, and their mixtures. We improved the Huh equation by adding a fitting parameter, β, to accommodate the transition from type III to type II microemulsions as salinity increases. With increasing salinity, anionic surfactant’s hydrophilic-hydrophobic interactions change, affecting the  values and surfactant layer thickness. This study improved hydrophilic-lipophilic deviation (HLDN) by establishing a fixed interval for nonionic surfactants. Van der Waals attraction,  values and interface surfactant layer thickness are connected, reflecting the fact that lower  values reduce interfacial tension better. This study also found that surfactant packing at the oil-water interface increases the order of the oil-solution ratio and the microemulsion values with polarity.
POTENSI KEBERHASILAN KULIT UDANG SEBAGAI BAHAN DASAR POLIMER KITOSAN: STUDI LITERATUR Setiati, Rini; Siregar, Septoratno; Wahyuningrum, Deana; Fathaddin, M. Taufik
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Volume 6, Nomor 1, Januari 2021
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v6i1.8637

Abstract

Tujuan dari penelitian ini adalah untuk mempelajari potensi yang dimiliki oleh kulit udang sebagai bahan baku polimer kitosan.  Penelitian ini diawali dengan proses pemisalahan kulit udang kitin dan proses kitin menjadi kitosan serta menguji karakteristiknya. Kulit udang dapat diolah menjadi kitosan karena kandungan kitin yang terdapat di dalamnya.  Kitin merupakan bahan organik utama terdapat pada kelompok hewan crustacea, insekta, fungi, mollusca dan arthropoda. Cangkang kepiting, udang dan lobster juga merupakan sumber bahan dasar produksi kitin karena kandungan kitinnya cukup tinggi. Kitin merupakan biopolimer alam paling melimpah kedua setelah selulosa yang tidak beracun dan diproduksi dari limbah kulit udang. Kitosan diolah dari kulit udang melalui proses deproteinasi, demineralisasi dan deasetilasi. Reagen yang digunakan adalah NaOH dan KOH. Kemudian kitosan diuji sifat fisiknya melalui uji kadar air, kadar abu, kadar nitrogen, viskositas, derajat deasetilasi, analisis gugus fungsi dengan spektroskopi IR dan kristalinitas dengan difraksi sinar X. Sifat fisik kitosan dilihat dari bentuk fisik, analisis gugus fungsi dan kristalinitas. Potensi penerapan kitosan, sebagai turunan kitin yang terdeasetilasi, bersifat multidimensi, seperti dalam makanan dan gizi, bioteknologi, ilmu material, obat-obatan dan farmasi, pertanian dan perlindungan lingkungan. Isolasi kitin dari kulit udang dan sintesanya menjadi kitosan, menjadikan kulit udang lebih barmanfaat untuk bidang-bidang lain. Kulit udang yang diolah menjadi kitosan polimer dapat berpotensi untuk digunakan dalam bidang Enhanced Oil Recovery sebagai fluida injeksi kimiawi dalam upaya menaikkan produksi minyak.
The Development of Green Chemistry Teaching Material Based on Organic Compound Synthesis Pertiwi, Annisa Mustika; Wahyuningrum, Deana
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 2 (2024)
Publisher : Department of Chemistr Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.24452

Abstract

Green chemistry is currently included in 10th-grade chemistry in Indonesia’s Merdeka curriculum. However, the learning implementation is still limited to the knowledge of approximately 12 principles of green chemistry, but its relevance to real-world applications is less discussed. The process of organic compound synthesis is a problem that is closely related to the application of green chemistry. This research aims to produce context-based green chemistry teaching materials for senior high school students on the basis of experiments using an ionic liquid and microwave-assisted organic synthesis (MAOS) method in the synthesis of an organic compound named dehydrozingerone (DHZ) from vanillin and acetone. The instructional material development method follows the Research & Development (RnD) method via a 4D model and includes the Define, Design, Develop, and Deliver stages. The guided-inquiry student worksheets developed in this research were tested in a classroom setting with 31 10th grade students from Al Ma’soem Senior High School in Bandung, West Java, Indonesia. The evaluation of the teaching materials received a positive response from the students, with a score of 78.29%, indicating a “good” classification. The findings of this study highlight the potential of these contextual teaching materials to enhance students’ engagement and understanding in learning green chemistry concepts and applications.
Green Synthesis of Dehydrozingerone (DHZ) Utilizing Ionic Liquid Medium and Microwave Irradiation Pertiwi, Annisa Mustika; Wahyuningrum, Deana
EduChemia: Jurnal Kimia dan Pendidikan Vol 9, No 1 (2024)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30870/educhemia.v9i1.24414

Abstract

Dehydrozingerone (DHZ), 4-(4-hydroxy-3-methoxyphenyl)-3-buten-2-one, a natural compound found in the rhizome of ginger plants (Zingiber officinale), exhibits a wide range of bioactivities, including antioxidant, anticancer, antimalarial, antidepressant, antifungal, and many other bioactivities. Conventionally, DHZ is synthesized through a cross-aldol Claisen-Schmidt condensation of vanillin and acetone, but this process often requires extended reaction times (up to 48 hours), results in low yields, and involves the excess use of organic solvents for purification. To address these limitations, this study aims to develop a green synthesis method for DHZ utilizing a 1-decyl-3-methylimidazolium bromide ([DMIM]Br) ionic liquid medium and microwave-assisted organic synthesis (MAOS) method. The experimental procedure involved optimizing the reaction conditions and varying the concentration of [DMIM]Br under microwave irradiation. Product characterization was performed by melting point determination, thin-layer chromatography (TLC), Fourier transform infrared (FTIR), and nuclear magnetic resonance (NMR) 1H (500 MHz, CDCl3) and 13C (125 MHz, CDCl3) spectroscopy. These findings indicate that the use of the [DMIM]Br ionic liquid significantly improved the purity and yield of DHZ products. The optimal conditions were synthesis from vanillin and acetone in a 1:10 molar ratio, 2.5 M NaOH, and 5% [DMIM]Br (w/v) using MAOS for 120 minutes (50°C, 300 W) to produce a 62.96% yield product in the form of a bright yellow solid with a melting point range of 129–130°C. The use of ionic liquids and MAOS provides a more efficient and environmentally friendly method for synthesizing DHZ, offering a significant reduction in reaction time and eliminating excess organic solvents, thus making it a promising alternative to traditional synthesis methods.
Co-Authors Bambang Ariwahjoedi Buchari Buchari Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Bunbun Bundjali Cynthia Linaya Radiman Cynthia Linaya Radiman Damar Nurwahyu Bima Dian Asfriany Nurfalah Doddy Abdassah Herayati, Herayati I Made ARCANA I Made Arcana I Made Arcana I Putu Parwata Irma Mulyani Irma Mulyani Irma Nuril Maryam Iwan Syahjoko Saputra Khusna Widhyahrini Lucy Arianie M. Taufik Fathaddin M. Taufik Fathaddin, M. Taufik Muhamad Jalil Baari Muhammad Ali Zulfikar Ndruru, Sun Theo Constan Lotebulo Ni Ketut Ketis Nila Tanyela Berghuis Nora Idiawati Novriana Sumarti Nuning Nuraini Nurrahmi Handayani Pertiwi, Annisa Mustika Rani Kurnia Rani Kurnia Rini Setiati RUKMAN HERTADI Sadijah Achmad Sadijah Achmad Santi Nurbaiti Septoratno Siregar Septoratno Siregar Septoratno Siregar Sony Suhandono Sugiatmo Kasmungin Sun Theo Constan Lotebulo Ndruru Sun Theo Constan Lotebulo Ndruru Taufan Marhaendrajana Taufan Marhaendrajana, Taufan Tikarahayu Putri Utin Dewi Pebriyana Utjok W.R Siagian Yana Maolana Syah Yudiansyah Yudiansyah Yuliana, Cut Yulyani Nur Azizah