Article Per Year (5 Year)
p-Index From 2021 - 2026
1.152
P-Index
This Author published in this journals
All Journal JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Kartika Kimia Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Dedikasi: Jurnal Pengabdian kepada Masyarakat Indonesian Chimica Letters Bulletin of Chemical Reaction Engineering & Catalysis
Muhammad Reza
Department Of Chemistry, Faculty Mathematics And Natural Science, Universitas Jember
Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Penerapan Response Surface Methodology dalam Optimasi Kondisi Proses Ekstraksi Antosianin pada Limbah Kulit Kakao dengan Metode Maserasi Menggunakan Pelarut Etanol Istiqomah Rahmawati; Boy Arief Fachri; Nurtsulutsiyah Nurtsulutsiyah; Yakub Hendrikson Manurung; Muhammad Reza; Meta Fitri Rizkiana; Helda Wika Amini
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 6, No 1 (2022)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.063 KB) | DOI: 10.17977/um0260v6i12022p024

Abstract

Antosianin dengan konsentrasi tinggi terdapat dalam kulit kakao. Tujuan dari penelitian ini adalah untuk mengidentifikasi hubungan antara variabel input dan mengembangkan model prediksi yang digunakan dalam optimasi kondisi proses ekstraksi antosianin. Ekstraksi antosianin dalam kulit kakao dilakukan menggunakan metode maserasi. Variable proses ekstraksi yang dioptimasi meliputi ukuran partikel (0,105; 0,125; 0,149; 0,177; 0,25 mm), rasio bahan/pelarut (0,0045; 0,0125; 0,0375; 0,0625; 0,0795 g/mL), dan waktu (7,5; 24;  48; 72; 79 jam). Program Design Expert vs11 dengan Response Surface Methodology (RSM) Box-Behnken Design digunakan dalam penelitian dan dilakukan pemilihan kondisi proses dari kombinasi faktor-faktor yang menghasilkan respon yang optimal. Hubungan antar variabel terhadap respon konsentrasi antosianin yang dimodelkan :Y=0,2129-0,0483A+0,0816B+0,0069C-0,0219AB-0,0271AC+0,0174BC+0,0298A2-0,0349B2 +0,0504C2(A adalah ukuran partikel; B adalah rasio kulit kakao:pelarut; dan C adalah waktu).Nilai respon optimal konsentrasi antosianin adalah 0,479 M dengan kondisi ukuran partikel pada proses ekstraksi 0,105 mm, rasio kulit kakao/etanol adalah 0,0625 g/mL, dan waktu ekstraksi adalah 72 jam
Implementasi Pengolahan Limbah Cair Industri Tempe Berbasis Eco-Friendly Dan Zero Waste pada UKM Tempe Di Desa Jambesari Kabupaten Bondowoso Bekti Palupi; Istiqomah Rahmawati; Meta Fitri Rizkiana; Muhammad Reza; Boy Arief Fachri; Reswara Musyafa; Regita Gustiayu Pramisti Maharani; Mohammad Nor
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol 3, No 1 (2022): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v3i1.208

Abstract

Salah satu industri tempe yang ada di Desa Karang Malang, Jambesari, Bondowoso, Jawa Timur yaitu Industri Tempe Fatimah. Tempe Fatimah mendapatkan respon positif dari masyarakat sehingga produksinya pun meningkat. Peningkatan produksi tentunya berimbas dengan meningkatnya limbah yang dihasilkan sehingga perlu dilakukan pengelolaan limbah agar tidak menimbulkan isu permasalahan lingkungan. Secara umum, permasalahan mitra terkait yang teridentifikasi meliputi 3 hal yaitu (1) proses pembuatan tempe menghasilkan limbah cair yang dihasilkan mempunyai karakteristik bau tidak sedap dan berwarna yang dapat mencemari lingkungan atau kualitas air sekitar; (2) limbah cair yang dihasilkan belum dilakukan penanganan dan pengolahan secara khusus; dan (3) belum mempunyai alat pengolah limbah cair tempe sehingga pengolahan limbah cair industri tempe belum ditangani secara tepat. Oleh karena itu, beberapa solusi yang dapat ditawarkan kepada mitra usaha industri tempe Fatimah antara lain (1) memberikan pengetahuan atau wawasan tentang kandungan kimia, dampak dan bahaya limbah cair industri tempe terhadap lingkungan dan kehidupan manusia; (2) memberikan pengetahuan atau wawasan tentang metode dan teknologi pengolahan limbah yang dapat diaplikasikan dalam menangani limbah cair industri tempe; dan (3) meningkatkan keterampilan mitra usaha melalui penggunaan dan perawatan Teknologi Tepat Guna Mesin Pengolah Limbah Cair Tempe sebagai solusi pencemaran limbah cair tempe pada lingkungan hidup. 
bcl Morphology Formation Strategy on Nanostructured Titania via Alkaline Hydrothermal Treatment Fry Voni Steky; Veinardi Suendo; Rino Rakhmata Mukti; Didi Prasetyo Benu; Muhammad Reza; Damar Rastri Adhika; Viny Veronika Tanuwijaya; Ashari Budi Nugraha
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.3.3853.513-520

Abstract

Titanium dioxide (TiO2) is a semiconductor material that plays an important role in photocatalysis. Bicontinuous concentric lamellar (bcl) is an interesting morphology with an open channel pore structure that has been successfully synthesized on silica-based materials. If bcl morphology can be applied in TiO2 system, then many surface properties of TiO2 can be enhanced, i.e. photocatalytic activity. A simple and effective strategy has been demonstrated to transform aggregated and spherical TiO2 particles to bcl morphology via alkaline hydrothermal route. Alkaline hydrothermal treatment successfully transforms TiO2 particle surface to have bcl morphology through swelling with ammonia then followed by phase segregation process. We proposed this strategy as a general pathway to transform the particle surface with any shape to have bcl morphology. 
Preparation of Polyaniline Emeraldine Salt for Conducting-Polymer-Activated Counter Electrode in Dye Sensitized Solar Cell (DSSC) using Rapid-Mixing Polymerization at Various Temperature Auliya Nur Amalina; Veinardi Suendo; Muhammad Reza; Phutri Milana; Risa Rahmawati Sunarya; Damar Rastri Adhika; Viny Veronika Tanuwijaya
Bulletin of Chemical Reaction Engineering & Catalysis 2019: BCREC Volume 14 Issue 3 Year 2019 (December 2019)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.14.3.3854.521-528

Abstract

Polyaniline Emeraldine Salt (PANI ES) as a conductive polymer has been used as a Pt-free counter electrode materials in DSSC. In this study, polymerization temperature was varied at relatively high temperature from 308 to 348 K with respect to the standard low polymerization temperature at 273 K. The synthesis held in varied high-temperature to study the effect of synthesis condition resulted to the performance as counter electrode in DSSC. The effect of high-temperature synthesis condition gives interesting results, the FTIR-ATR spectra show the presence of vibrational modes of phenazine structure obtained at high polymerization temperature, indicate the changing in the chain geometry. Raman Spectroscopy shows the decrease of the I1194/I1623 intensity ratio that can be interpreted that the degree-of-freedom of C-H bond bending mode decreases in the benzenoid ring, while the stretching mode degree-of-freedom along the chain is preserved or increased. The electrical conductivity profile has changed from metal-like at low-temperature into a semiconductor-like profile at high-temperature. Scanning Electron Microscope images reveals that a change in the morphology of PANI ES with temperature. At low-temperature (273 K) the morphology has a globular shape, while at high-temperature it tends to form nanorod structure. DSSC device with highest efficiency is attained for PANI ES polymerized at 273 K (1.91%) due to its high conductivity. The lowest efficiency is observed in device using PANI ES synthesized at 328 K (1.15%) due to its low conductivity due to the formation of phenazine structure. 
Effect of Time Variation on Chlorophyll Concentration in Cocoa Leaf Extraction using the UAE (Ultrasonic Assisted Extraction) Method Rahmawati, Istiqomah; Shabrina, Nadhilah; Fachri, Boy Arief; Amini, Helda Wika; Palupi, Bekti; Rizkiana, Meta Fitri; Nurtsulutsiyah, Nurtsulutsiyah; Pradipta, Shima Nuril; Afwal, Diza Raudhatul; Reza, Muhammad
Jurnal Kartika Kimia Vol 5 No 1 (2022): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v5i1.97

Abstract

Until now, Cocoa (Theobroma cacao L.) plantation is a sector that has been continuously cultivated. Cocoa leaves contain chlorophyll, which is an important pigment in photosynthesis as sunlight absorber. The aim of this study is to determine the effect of extraction time to the concentration of chlorophyll in cocoa leaves. The extraction time was varied from 5 to 25 min with constant variables, namely power and ratio of raw materials. In this study, Ultrasonic Assisted Extraction (UAE) method was used due to its effectiveness. The concentration of obtained chlorophyll was determined by using UV-Vis spectrophotometry. The optimum extraction time was 15 min producing concentration of chlorophyll a of 9.39 mg/L, chlorophyll b of 4.78 mg/L, and total chlorophyll of 14.16 mg/L.
Effect of pH and Incubation Time on Dissolved Nitrogen During Autolityc Degradation of Chicken Intestine Aulia, Eldiani; Sjaifullah, Achmad; Handayani, Wuryanti; Busroni; Oktavianawati , Ika; Reza, Muhammad
Indonesian Chimica Letters Vol. 2 No. 1 (2023)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v2i1.372

Abstract

Chicken intestine is a part of internal organs, which are rich in protein and protease enzymes. The protease enzyme could self-degrade (autolytic degradation process) proteins in the chicken intestine at an appropriate pH and incubation time. This process produces a shorter chain polypeptide having a higher solubility protein called protein hydrolysates. Protein hydrolysates have shown a good impact in foods and health applications. In this study, the autolytic degradation of chicken intestine was carried out to obtain protein hydrolysates. The effect of pH and incubation time on the dissolved nitrogen (%N) and protein content ([protein]) in hydrolysate from the autolytic degradation of chicken intestine explained in this paper. The incubation pH used in this study was 2.5, 3.5, 5.5., and 6.3 while the the incubation time was 0, 6, 12, and 18 h. Chicken intestine was incubated for 18 h at several different pHs, and the % N and protein content were determined by using Formol titration and Bradford methods, respectively, within       6 h intervals. It was obtained the % N and [protein] content increase at pH 2.5 and 3.5 during 18 h of incubation time and they were decreased at a higher pH. The optimum % N and [protein] content were 5.98±0.51 % and 25.3±0.04 mg mL-1, respectively, obtained at pH of 2.5 during 18 h incubation time.
Sosialiasasi dan Implementasi TTG Produksi Pupuk Cair Organik di Desa Banjar Sengon Reza, Muhammad; Sjaifullah, Achmad; Busroni, Busroni; Rahmawati, Istiqomah; Khotimah, Husnul; Ridho, Moh Zeinur; Robaniyah, Septiana Kholifatur; Fitriati, Diana
Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Vol 7, No 3 (2024): Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstormin
Publisher : Politeknik Harapan Bersama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/japhb.v7i3.6927

Abstract

Ketergantungan masyarakat terhadap penggunaan pupuk kimia menyebabkan turunnya produktivitas tanah. Guna mengurangi kerusakan lingkungan diperlukan penyeimbangan penggunaan pupuk kimia dengan pupuk organik. Bahan yang berpotensi untuk digunakan dalam pembuatan pupuk organik adalah limbah pertanian, salah satunya pemanfaatan limbah kulit buah kakao. Kulit buah kakao memiliki kandungan hara berupa C-organik yang tinggi yakni sekitar 26,61%. Dalam pembuatannya diperlukan teknologi tepat guna dan dukungan dari masyarakat untuk menjamin produksi yang berkelanjutan. Kegiatan ini bertujuan untuk mengembangkan teknologi tepat guna dalam produksi pupuk organik cair sehingga dapat dimanfaatkan masyarakat untuk meningkatkan efektivitas produksi baik secara kualitas maupun kuantitas. Kegiatan pengabdian dikemas dalam bentuk sosialisasi untuk memberdayakan kader PKK di Desa Banjar Sengon, Kecamatan Patrang, Kabupaten Jember terkait proses pengolahan limbah kulit buah kakao menjadi pupuk organik cair. Produksi POC dari limbah kulit buah kakao diharapkan mampu meminimalisir jumlah limbah kulit buah kakao dan menjadi langkah sederhana dalam upaya mewujudkan pertanian berkelanjutan dengan mengurangi ketergantungan terhadap pupuk kimia serta membuka peluang baru dalam sektor ekonomi lokal.Kegiatan workshop sangat menjadi parameter, dimana 90% dari kegiatan yang dilakukan membuat warga menjadi lebih paham dan andal dalam mengolah limbah kulit kakao menjadi pupuk organik cair. Warga juga aktif bertanya dan memberikan ide-ide penggunaan alat tersebut untuk limbah sejenis sehingga penggunaan TTG dapat maksimal.
Development of Arduino Uno Based Multispectra Colorimeter For Formaldehyde Determination Anida, Choirun Nisa; Zulfikar, Zulfikar; Siswoyo, Siswoyo; Asnawati, Asnawati; Reza, Muhammad
Indonesian Chimica Letters Vol. 4 No. 1 (2025)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/icl.v4i1.5693

Abstract

Formalin is a hazardous substance that is often misused as a food preservative, so routine formalin analysis is very necessary for public safety. Formalin analysis generally uses spectrophotometry and also a simple colorimeter. Currently, many Arduino-based colorimeters are being studied and development with RGB (Red, Green, Blue) LED (Light Emitting Diode) light sources. This research is also in this field with a focus on the use of multi-spectral RGB LED lights with 16 colors that are already commercially available. The multispectral colorimeter is designed by integrating an LED light source, a photodiode module as a detector, and controlled by an Arduino Uno R3. The LED light module circuit, cuvette and detector photodiode are then arranged and packaged in an X8 project box. Optimization of the circuit is studied including the distance between the LED lamp and the cuvette and the photodiode with the cuvette. A feasibility study of the use of multispectral RGB LEDs is also carried out by looking at the stability of the response of each color. The performance test of the multispectral colorimeter is carried out by analyzing formaldehyde oxidized with hydrogen peroxide using methyl red as an indicator under the alkaline condition. The results showed no significant difference when viewed from the linearity, Limit of Detection, Limit of Quantitation, sensitivity, and precision values calculated from the calibration curve. The difference in linearity values was 0.0013, Limit of Detection = 0.17, Limit of Quantitation = 0.57, sensitivity = 0.0001, and precision (SD = 0.001 and %RSD = 0.11).
Co-Authors Achmad Sjaifullah Afwal, Diza Raudhatul Anida, Choirun Nisa Ashari Budi Nugraha Asnawati Asnawati Aulia, Eldiani Auliya Nur Amalina Bekti Palupi Benu, Didi Prasetyo Boy Arief Fachri Busroni Busroni, Busroni Damar Rastri Adhika Fitriati, Diana Fry Voni Steky Helda Wika Amini Helda Wika Amini Heni Pujiastuti Indradewa, Rhian Istiqomah Rahmawati Meta Fitri Rizkiana Mohammad Nor Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah, Nurtsulutsiyah Oktavianawati , Ika Phutri Milana Pradipta, Shima Nuril Regita Gustiayu Pramisti Maharani Reswara Musyafa Ridho, Moh Zeinur Rino Rakhmata Mukti Risa Rahmawati Sunarya Robaniyah, Septiana Kholifatur Shabrina, Nadhilah Siswoyo Siswoyo Sunarya, Risa Rahmawati Veinardi Suendo Viny Veronika Tanuwijaya Wuryanti Handayani Yakub Hendrikson Manurung