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All Journal CHEMISTRY PROGRESS ILMU KELAUTAN: Indonesian Journal of Marine Sciences Reaktor Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology SAINS DAN MATEMATIKA JURNAL KIMIA SAINS DAN APLIKASI Jurnal Ilmu Lingkungan Jurnal Pengolahan dan Bioteknologi Hasil Perikanan Alchemy : Journal of Chemistry Indonesian Journal of Cancer Chemoprevention Jurnal Riset Kimia Indonesian Journal of Chemical Science Chimica et Natura Acta Akta Kimia Indonesia Al Qalam: Jurnal Ilmiah Keagamaan dan Kemasyarakatan Indonesia Journal of Halal Indonesian Journal of Chemical Analysis (IJCA) Molekul: Jurnal Ilmiah Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Bahasa: Jurnal Keilmuan Pendidikan Bahasa dan Sastra Indonesia JATI (Jurnal Mahasiswa Teknik Informatika) International Journal Of Science, Technology & Management (IJSTM) Journal International of Lingua and Technology Prosiding Seminar Nasional Universitas Serambi Mekkah International Journal of Cell and Biomedical Science JURNAL VOKASI TEKNIK (JUVOTEK) Jurnal Info Kesehatan
Bambang Cahyono
Department Of Chemistry, Faculty Of Science And Mathematics, Diponegoro University Jl. Prof. Soedarto SH. - Tembalang, Semarang (50275)
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation Other

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RANCANG BANGUN SISTEM INFORMASI UNIT KEAGAMAAN KELUARGA BESAR MAHASISWA KRISTEN POLITEKNIK NEGERI SAMARINDA Palayukan, Marfan; Topadang, Anton; Cahyono, Bambang
JURNAL VOKASI TEKNIK Vol 3 No 2 (2025): JURNAL VOKASI TEKNIK (JUVOTEK)
Publisher : CV MEDAN TEKNO SOLUSI

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Abstract

Penggunaan teknologi informasi di era digital saat ini menjadi aspek penting dalam menunjang efektivitas operasional, termasuk dalam lingkup organisasi kemahasiswaan. Unit Keagamaan Keluarga Besar Mahasiswa Kristen Politeknik Negeri Samarinda menghadapi permasalahan dalam pengelolaan data anggota, kegiatan keagamaan, dan komunikasi internal yang masih dilakukan secara manual, sehingga kurang efisien. Penelitian ini bertujuan untuk merancang dan membangun sistem informasi berbasis web yang mampu mengatasi permasalahan tersebut. Metode pengembangan sistem yang digunakan adalah waterfall, karena model ini memiliki tahapan yang terstruktur dan mudah diterapkan. Sistem dikembangkan menggunakan framework CodeIgniter untuk sisi backend dan Bootstrap untuk tampilan antarmuka. Hasil sementara menunjukkan bahwa sistem mampu memfasilitasi pencatatan data anggota, pengelolaan jadwal kegiatan keagamaan, serta komunikasi antar pengurus dan anggota secara lebih terorganisir. Penelitian ini diharapkan dapat memberikan solusi efektif dalam mendukung aktivitas keorganisasian berbasis teknologi informasi.
RANCANG BANGUN SISTEM INFORMASI PEMESANAN DAN PENJUALAN BERBASIS WEB STUDI KASUS KEDAI HITAM PUTIH Setiawan, Budi; Hartanto, Subhan; Cahyono, Bambang
JURNAL VOKASI TEKNIK Vol 3 No 2 (2025): JURNAL VOKASI TEKNIK (JUVOTEK)
Publisher : CV MEDAN TEKNO SOLUSI

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Abstract

Rancang bangun sistem informasi pemesanan dan penjualan berbasis web merupakan proses sistematis dalam pengembangan perangkat lunak. Tujuan penelititan ini guna merencanakan dan membuat aplikasi berbasis web khusus untuk pemesanan pada Kedai Hitam Putih. Kendala yang terjadi dimana pemesanan masih dilakukan secara manual dan sistem ini dirancang untuk mengembangkan media informasi. Pendekatan metode yang diterapkan dalam pengembangan aplikasi ini adalah Waterfall, yang memberikan kerangka terstruktur untuk setiap tahap pengembangannya. Pengembangan dilakukan secara terurut dan sistematis. Dengan demikian, Aplikasi berbasis website ini diharap dapat meningkatkan efisiensi dan penjualan secara keseluruhan pada Kedai Hitam Putih.
Pembuatan Website E-Commerce Untuk Penjualan Online Pada Toko Shafirda: Pembuatan Website E-Commerce Untuk Penjualan Online Pada Toko Shafirda Irsandy, Wahyu Bahri; Cahyono, Bambang; Andrijasa, Muhammad Farman
JURNAL VOKASI TEKNIK Vol 3 No 2 (2025): JURNAL VOKASI TEKNIK (JUVOTEK)
Publisher : CV MEDAN TEKNO SOLUSI

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Abstract

Penelitian ini bertujuan untuk mengembangkan website E-Commerce pada Toko Shafirda guna meningkatkan efisiensi proses penjualan dan memperluas jangkauan pasar. Melalui website ini Toko Shafirda dapat meningkatkan efisiensi proses penjualan dengan menyediakan layanan online yang memungkinkan pelanggan melihat katalog produk, melakukan pemesanan, serta menyelesaikan pembayaran secara online. Metodologi pengembangan menggunakan model Agile yang melibatkan tahap analisis kebutuhan, desain sistem, implementasi, pengujian pada sistem untuk Toko Shafirda. Dengan demikian, pembuatan website ini diharapkan dapat membuat, pelanggan dapat berbelanja dengan lebih praktis, sementara pemilik toko dapat mengelola transaksi secara lebih efisien.
Pembuatan Website UMKM Kelurahan Sungai Kapih menggunakan PHP Rinaldy Yudhistira, Muhammad; Cahyono, Bambang; Farman Andrijasa, M.
JURNAL VOKASI TEKNIK Vol 3 No 2 (2025): JURNAL VOKASI TEKNIK (JUVOTEK)
Publisher : CV MEDAN TEKNO SOLUSI

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Abstract

Usaha Mikro, Kecil dan Menengah (UMKM) di Wilayah Samarinda, Khususnya di Kelurahan Sungai Kapih saat ini sedang berkembang pesat. Dengan di bangunnya Jembatan Mahkota II dan Jalan Tol Samarinda-Balikpapan membuat Wilayah kelurahan Sungai Kapih ini juga ikut terkena dampak positif, Salah satu dampak positif tersebut adalah di bidang UMKM. Yang membantu mengangkat perekonomian dari warga sekitar, Tetapi masih banyak orang yang tidak mengetahui UMKM apa saja yang ada di wilayah tersebut dikarenakan kurang nya Media Informasi untuk mempromosikan usaha UMKM tersebut. Oleh karena itu dengan di bangunnya media promosi UMKM berbasis Web, Bertujuan agar UMKM tersebut memiliki wadah informasi untuk mempermudah warga sekitar.Metode yang digunakan adalah media informasi, sedangkan objek penelitiannya UMKM yang masih aktif menjalankan usahanya di Wilayah Kelurahan Sungai Kapih. Web yang di hasilkan hanyalah informasi mengenai UMKM, Hal ini memudahkan pelanggan untuk melihat produk UMKM dan Alamat yang diinginkan pelanggan dan menimbulkan niat pelanggan untuk membeli dan mengetahui Lokasi UMKM yang di promosikan melalui Website.
Nanoenkapsulasi Hiptolida dari Hyptis pectinata (L.) Poit dengan Kitosan, Pektin, dan TPP menggunakan Metode Koaservasi Kompleks Nur'aini, Luthfiah Putri; Cahyono, Bambang; Wibowa, Pratama Jujur; Suzery, Meiny
Chimica et Natura Acta Vol 12, No 2 (2024)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v12.n2.50657

Abstract

Telah dilakukan enkapsulasi hiptolida dengan penyalut kitosan, pektin, dan tripolifosfat (TPP) menggunakan metode koaservasi kompleks. Proses enkapsulasi dibuat dalam bentuk empat formula: formula 1 kitosan (BM = 500 KDa) 1% dan pektin 0,05%; formula 2 kitosan (BM = 168 KDa) 1% dan pektin 0,05%; formula 3 kitosan (BM = 168 KDa) 1% dan pektin 0,05% yang disertai perlakuan sonikasi; formula 4 kitosan 0,04%, pektin 0,08%, dan TPP 0,01%. Karakterisasi ukuran partikel formula enkapsulasi menggunakan particle size analyzer (PSA), efisiensi enkapsulasi (EE) menggunakan spektrofotometer UV-Vis, dan interaksi gugus fungsi hiptolida dalam masing-masing formula menggunakan spektrometer Raman. Hasil karakterisasi ukuran partikel formula 1 diperoleh 111,885 µm, formula 2 sebesar 118,389 µm, formula 3 sebesar 118,388 µm, dan formula 4 yaitu 20,578 nm, dengan efisiensi enkapsulasi 97,801%. Berdasarkan penelitian yang telah dilakukan, disimpulkan bahwa formula 4 dengan komposisi kitosan 0,04%, pektin 0,08%, dan TPP 0,01% merupakan formula optimum enkapsulasi hiptolida yang mampu membentuk nanopartikel berukuran 20,578 nm.
Cytotoxic Activity of Hyptis Pectinate Extracts on MCF-7 Human Breast Cancer Cells Amalina, Nur Dina; Suzery, Meiny; Cahyono, Bambang
Indonesian Journal of Cancer Chemoprevention Vol 11, No 1 (2020)
Publisher : Indonesian Society for Cancer Chemoprevention

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14499/indonesianjcanchemoprev11iss1pp1-6

Abstract

Hyptis pectinata (L.) poit, popularly known in the world as “comb bushmint” is a medicinal plant commonly used for the treatment of throat and skin inflammations, bacterial infection, pain and cancer. The objective of this research is to determine the cytotoxic and antiproliferative effect under Hyptis pectinata ethanolic extract (HPE) treatment on breast cancer cells. The effect HPE of on cytotoxicity was examined by MTT assay on MCF-7 breast cancer cells. This assay also used to determine cell proliferation over 3 days of treatment with 1.5 – 100 µg/mL HPE. HPE showed that exhibited cytotoxic effects with IC50 value of 30 µg/mL for 24 hours and changes the physiological morphology on MCF-7 cells. Interestingly, the treatment of HPE for 48 and 72 hours highly decreases cell viability on MCF-7 with dose and time-dependent manner compared to untreated cells. These results indicate that HPE has antiproliferative activities and maybe the potential to be developed as a natural chemotherapeutic agent.Keywords: Hyptis pectinata (L.) poit extract, cytotoxicity, antiproliferative, MCF-7 cells
Analysis of Consistency The REEDA Scale in Healing Second-Degree Perineal Lacerations Yuniarti, Yuniarti; Pramono, Noor; Cahyono, Bambang; Sera, Agnescia Clarissa
JURNAL INFO KESEHATAN Vol 23 No 1 (2025): JURNAL INFO KESEHATAN
Publisher : Research and Community Service Unit, Poltekkes Kemenkes Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31965/infokes.Vol23.Iss1.1645

Abstract

Many studies of perineal wounds use the redness, edema, ecchymosis, discharge, and approximation (REEDA) scale as a healing assessment tool. Still, this tool has not become part of the standard of care in postpartum women with perineal lacerations due to the lack of evidence of its validity. This study aimed to analyze the consistency of the REEDA scale in healing perineal wounds of postpartum women. The method uses an observational study using the interrater reliability test for the REEDA tool on perineal wound healing in postpartum women with second-degree perineal lacerations, 11 women were recruited using consecutive sampling. Lacerations were observed by researchers, and midwives were trained on days 1, 3, and 7 postpartum. Cohen's kappa coefficient test was used to test the consistency of the REEDA scale. The results shows that the fair and excellent agreement on the redness item with kappa (0.57-1.00), agreement on the edema item showed good and excellent results (0.61-0.84), fair and good agreement on the ecchymosis item (0.51- 0.73), good and excellent agreement on discharge items (0.79 -1.00). On the approximation item (0.62–1.00), agreement improved to excellent at the final assessment. In the third evaluation, the scoring of all items showed good or excellent agreement between the raters.  The conclusion is  the overall assessment shows that the application of the REEDA scale is reliable because it shows consistency; namely, there are no more values with low agreement on the seventh day of the postpartum period.
Analysis of Total Phenolics, Flavonoids, and Antioxidant Activity of Cashew Leaf Extract (Anacardium occidentale L.) with Varying Ethanol Concentrations: Analisis Total Fenolik, Flavonoid, dan Aktivitas Antioksidan Ekstrak Daun Jambu Mete (Anacardium occidentale L.) dengan Variasi Konsentrasi Etanol Kurniasari, Risma; Suzery, Meiny; Cahyono, Bambang
Jurnal Riset Kimia Vol. 15 No. 2 (2024): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v15i2.735

Abstract

This study evaluated the effectiveness of various ethanol concentrations (50%, 70%, and 96%) in extracting bioactive compounds from cashew leaves (Anacardium occidentale). Parameters analyzed included total phenolics, total flavonoids, and antioxidant activity using the DPPH and H2O2 methods. The results showed that the 70% ethanol extract produced the highest total phenolic and flavonoid content as well as significant antioxidant activity compared to other ethanol concentrations. This study offers practical insights for pharmaceutical, cosmetic, and nutraceutical industries in selecting the optimal solvents for cashew leaf extraction. Additionally, the analysis showed that the 70% ethanol extract offered an optimal balance between extraction efficiency and antioxidant activity, making it the most efficient solvent for commercial use.
Effects of Temperature and Heating Time on Degradation and Antioxidant Activity of Anthocyanin from Roselle Petals (Hibiscus sabdariffa L.) Suzery, Meiny; Nudin, Burhan; Nurwahyu Bima, Damar; Cahyono, Bambang
International Journal of Science, Technology & Management Vol. 1 No. 4 (2020): November 2020
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v1i4.78

Abstract

The effects of temperature and heating time on the degradation and antioxidant activity of anthocyanin compounds from roselle petals (Hibiscus sabdariffa L.) have been evaluated from this research. The purpose of this study is to determine, the degradation and antioxidant activity of anthocyanin compounds on variations of temperature and heating time. In this study anthocyanin was extracted from roselle petals using ethanol solvent at 25oC. Then the anthocyanin extract obtained was dissolved into aqueous solution. The solution was then heated at 40oC, 60oC and 80oC for 60 minutes. The degradation of anthocyanin compounds was analyzed by calculating the total of anthocyanin contents, while the antioxidant activity was evaluated using the DPPH method. The results showed that Total Anthocyanin Content (TAC) from the extract solution before heating was 144.28 mg/L. Meanwhile the total value of anthocyanin in the 60 minutes after heating at 400C, 600C and 800C are 108.88 mg/L, 88.84 mg/L and 63.78 mg/L respectively. Heating at 80oC decreases antioxidant activity by increasing the IC50 value to 86.8 ppm higher than the conditions before heating. The increase of temperature and length of the heating process made the anthocyanin structure degraded. Degradation was indicated by the reduction of total anthocyanin content and the decrease of antioxidant activity.
Characterization of Biosurfactants from Endophytic Bacteria Isolated from Geothermal Fern Leaves D9 Fadilla, Shobakhatun Nur; Cahyono, Bambang; Aminin, Agustina L. N.
Jurnal Kimia Sains dan Aplikasi Vol 29, No 2 (2026): Volume 29 Issue 2 Year 2026
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.29.2.111-118

Abstract

Biosurfactants are surface-active compounds synthesized by microorganisms. These compounds offer several advantages, including low toxicity, high compatibility, and biodegradability. Biosurfactants can be isolated relatively quickly, a property that renders them potentially applicable in industrial settings. One type of microorganism that produces biosurfactants is endophytic bacteria, which live within plant tissues. The present study focuses on the characterization of biosurfactants produced by endophytic bacteria isolated from geothermal ferns in the area around the Gedong Songo hot spring in Semarang Regency. Isolate 9 (D9) demonstrated the optimal oil-spreading capability and was consequently selected for further production and characterization. The optimal growth curve for biosurfactant production by isolate D9 (BS-D9) occurred in the early stationary phase, approximately 132 hours post-inoculation, with an oil-spreading diameter of 5.1 centimeters. The emulsification index (E24) of BS-D9 reached 95%, which is nearly equivalent to SDS at 1000 ppm, suggesting a high emulsification capacity. The methylene blue test indicated that BS-D9 is an anionic biosurfactant, whereas the negative Biuret test result indicated that it does not belong to the lipopeptide group. Fourier-transform infrared (FTIR) spectroscopy indicates that BS-D9 falls within the glycolipid category. This classification is supported by a distinctive absorption peak corresponding to glycosidic bonds, potentially of the rhamnolipid type. Rhamnolipids are widely recognized for their high emulsification efficiency, stability, and environmental compatibility, making them attractive for various industrial applications. These results indicate that BS-D9 has potential applications as a surface-active agent with environmentally friendly properties.
Co-Authors . Widayat A.A. Ketut Agung Cahyawan W Agustina L.N. Aminin Al-Baarri, Ahmad Ni’matullah Amalia Syaputri, Istifah Amalina, Nur Dina Ambaryanto Ambaryanto Andrijasa, Muhammad Farman Aninditya Artina Setiaputri Anton Topadang, Anton Ardelia Zahra, Deswita Bayu Legowo Budi Setiawan Bustomi, Tommy Christiana Suci Prihatini Christina Setyadewi M. Citra Agustina Isnaning Damar Nurwahyu Bima Dedy Hermansyah Defita Faridlotus Shalihah Degdo Suprayitno Dewi Kusrini Diana Chilmawati Dwi Hudiyanti Ely Kusniawati Fadilla, Shobakhatun Nur Farman andrijasa, M. Farman Andrijasa, Muhammad Fauzang Haniar, Alfat Fransisca Biranti Fronthea Swastawati H Hadiyanto Hartanto, Subhan Hendarko, Sriani Heru Susanto I Gusti Bagus Wiksuana Ima Wijayanti Irsandy, Wahyu Bahri Ismiyarto Ismitarto Ita Widowati Jusup Supriyanto Khairul Anami Kurniasari, Risma Laely Zahro Leenawaty Limantara M. Suzery Madiyono, Madiyono Magfiratun Hasanah, Mayta Meiny Suzery Meiny Suzery Merry Gultom Metandi, Farindika Muflihatul Muniroh Muhammad Diah Khoirul Huda Muhammad Fauzan Anwar, Harahap Muhammad Nur Arkham Muhammad Nursid Mukhammad Asy'ari Musmulyadin, Musmulyadin Nazli, Nazli Ngadiwiyana M.Si. S.Si. Nike Rizky Prahesti, Nike Rizky Ningsih, Alyxia Stellata Aria Noor Pramono Nudin, Burhan Nur'aini, Luthfiah Putri Palayukan, Marfan Pardede, Mahadi Parsaoran Siahaan Puspita, Dhea Putri Pratiwi Raisi Aga Oktavi Ramadaniati, Shintiya Retno Sariningsih Reyhan Awliya Sudjana, Muhammad Riky Auliawan Rinaldy Yudhistira, Muhammad Rini Budi Hastuti Sera, Agnescia Clarissa Sestri Bela Pratiwi Siti Khumairoh Slamet Suharto Sulistyowati Sulistyowati Supriyanto . Suradi, Agus Tari, Tari Tjipta, Arya Tri Winarni Agustini Umi Baroroh Lili Utami Veronika Adelina Hartini Wibowa, Pratama Jujur Widayadi, Eko Yuniarti Yuniarti Yusni Nyura, Yusni Zahroul Umami Qodri Zainal Arifin Zainul Rohman, Muchamad