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All Journal Prosiding Semnastek Indonesian Journal of Chemistry JURNAL PHOTON Halal Research Journal Sewagati Bulletin of Chemical Reaction Engineering & Catalysis
Darmawan, Raden
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Purified Konjac Glucomannan as Thickener for Substituting Gelatin in Making Panna Cotta Rachmaniah, Orchidea; Juliastuti, Sri Rachmania; Wisnu, Mita Mellenia; Samparia, Dian Asrini; Hendrianie, Nuniek; Darmawan, Raden; Meka, Wahyu; Fahmi, Fahmi
Halal Research Vol 4 No 1 (2024): February
Publisher : Halal Center ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j22759970.v4i1.980

Abstract

A thickener such as gelatin is essential in increasing viscosity and forming a gel system. Nowadays, gelatin is one of the most popular thickeners in food, pharmacy, and cosmetic products. Animal skins which lead to halal issues are still common sources of gelatin. Crude konjac flour (CKF) which is sourced from porang tubers and has a high degree of purity of glucomannan (GM) is a potential substitute for animal skins. Moreover, the use of KGM also supports national programs of processing agricultural products into finished products ready to export. This study applies five different CKF variants as panna cotta (PC) thickener: CKF from the fresh bulb of porang (Amorphophallus oncophyllus sp.) (CH-UP), CKF from chips of Porang (CH-CP), a native CKF, as well as laboratory-purified products of CKF (>90%-w of GM content) (DM-CKF-M3X-50, and DM-CKF-M3X-96), and commercially products of porang flour (K-TPO and K-TPM) were applied to make PC; substituting gelatin. Only CKF, DM-CKF-MX-50, and DM-CKF-M3X-96 successfully thickened PC in terms of appearances. Further, organoleptic analysis was applied to CKF, DM-CKF-MX-50, and DM-CKF-M3X-96. According to the organoleptic analysis, PC with CKF, DM-CKF-MX-50, and DM-CKF-M3X-96 was more preferred by the respondents than commercial PC. In overall, CKF application on PC exhibited improved sensory properties and tastes of PC.
Shelf-Life Test of Kebab Kebuli Al 'Aqoh for Fulfiling Product Quality of Small Medium Enterprise Rachmaniah, Orchidea; Rahmawati, Yeni; Kusumahati, Sari; Juliastuti, Sri Rachmania; Hendrianie, Nuniek; Darmawan, Raden; Oktavianingrum, Eva; Fahmi, Fahmi; Meka, Wahyu
Photon: Journal of Natural Sciences and Technology Vol 14 No 1 (2023): Jurnal Photon
Publisher : LPPM Universitas Muhammadiyah Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jp.v14i1.6041

Abstract

UKM Al ‘Aqoh Drink & Snack telah mengikuti program pendampingan di tahun 2021 sebagai binaan PKH ITS. Serangkaian uji waktu simpan, uji cemaran mikroba, dan uji kandungan nutrisi dilakukan untuk mendukung penerapan Sistem Jaminan Halal (SJH) sekaligus penerapan Cara Produksi Pangan yang Baik (CPPB) pada produk Kebab Kebuli Al ‘Aqoh. Pelaksanaan uji ini sekaligus menunjukkan higenitas proses produksi Kebab Kebuli dan pemenuhan desain label pangan olah yang baik. Kebab Kebuli freshly made terdeteksi memiliki nilai total kapang 2,00 x 101 CFU/g dan E. coli 6,00 x 101 CFU/g. Sedangkan parameter lain yang dipersyaratkan seperti Salmonella sp. dan Staphylococcus aureus tidak terdeteksi. Walaupun nilai angka kapang dan E. coli hanya terdeteksi 2,00 x 101 CFU/g dan 6,00 x 101 CFU/g, berturut-turut, namun nilai tersebut tetap perlu diwaspadai. Kehadiran E. coli ini dapat diminimalisir dengan sanitasi proses dan pasca produksi yang baik. Kehadiran E. coli dapat dihilangkan dengan memasak dan memanaskan kembali produk olahan pangan sampai suhu 65 oC, serta menyimpan pada suhu 4 oC. Sehingga, perlunya dilakukan penggorengan Kebab Kebuli sesuai dengan saran penyajian sebelum dihidangkan untuk menjamin keamanan pangan, menghindari potensi diare. Oleh sebab itu, higienitas proses dan pasca produksi Kebab Kebuli perlu dijaga dan ditingkatkan.
EVALUASI HEAT EXCHANGER DAN BOILER DI PT SALIM IVOMAS PRATAMA REFINERY UNIT SURABAYA Widodo, Dwi Satriyo; Darmawan, Raden; Aldila, Migel
Prosiding Semnastek PROSIDING SEMNASTEK 2024
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pengolahan Crude Palm Oil (CPO) pada PT Salim Ivomas Pratama Refinery Unit Surabaya merupakan proses pemurnian CPO menjadi Refined Bleached Deodorized Palm Oil (RBDPO) yang dibagi menjadi 3 tahapan utama, yaitu proses Degumming, Bleaching dan proses Deodorizing. Tujuan penelitian ini adalah untuk mengevaluasi kinerja heat exchanger E001, E701, E702, E703, dan Boiler 3, menggunakan data logsheet harian dalam rentang periode Juli hingga September 2023. Berdasarkan hasil perhitungan efektivitas rata-rata heat exchanger E001, E701, E702 dan E703 sebesar 63,41%, 76,05%, 90,09%, dan 70,13%. Nilai fouling factor rata-rata E001, E701, E702 dan E703 sebesar 0,00062 m2K/W, 0,00065 m2K/W, -0,0237 ft2.°F/Btu, dan 0,00292 ft2.°F/Btu dengan nilai toleransi untuk heat exhanger E001 dan E701 sebesar 0,0005 m2K/W, sedangkan untuk E702 dan E703 sebesar 0,003 ft2.°F/Btu sehingga diperlukan proses pembersihan pada heat exchanger E001 dan E701. Berdasarkan hasil perhitungan efisiensi boiler 3 menggunakan metode langsung dalam rentang periode Juli hingga September sebesar 74,16%, 79,97%, dan 79,17% sedangkan menggunakan metode tidak langsung sebesar 84,74%, 84,84%, dan 84,74%. Heat loss terbesar pada metode tidak langsung berasal dari heat loss dalam flue gas dengan rata-rata sebesar 10,80%.Kata kunci: Heat exchanger, boiler, efektivitas, fouling factor, efisiensi.
Peningkatan Kualitas Produksi Gula Merah melalui Pemasakan dengan Food Grade Cooking Pan dan Mekanisasi Scraping serta Pemanfaatan Limbah untuk Fattening Domba Darmawan, Raden; Koswara, Arwi Yudhi; Suryo, Is Bunyamin; Rokana, Efi; Srikalimah; Taufany, Fadlilatul; Zuhdan, Alya Zahrani
Sewagati Vol 8 No 5 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i5.2258

Abstract

Kelompok Tani “Tunas Harapan” terletak di Desa Ngetrep, Kecamatan Mojo, Kabupaten Kediri, Jawa Timur. Mata pencaharian utama masyarakat desa adalah sebagai petani, salah satunya petani tebu. Kelompok Tani “Tunas Harapan” bekerja sama dengan PT. Tiga Dewi Timur Raya sebagai mitra pendamping. Meskipun memiliki potensi pasar yang baik, tantangan yang dihadapi meliputi cemaran logam berat pada gula merah, metode pemisahan busa yang tidak efisien, serta belum optimalnya penerapan SOP higienitas, K3, dan pengelolaan limbah produksi. Tim pengabdian masyarakat mengusulkan solusi berupa desain dan pembuatan alat  food grade cooking pan berkapasitas 2.300 L nira dengan mekanisasi scraping, transfer knowledge berupa workshop, pendampingan penyiapan HACCP, pengolahan limbah tamte menjadi biskuit pakan ternak, dan rebranding produk. Program ini diharapkan dapat mendukung pencapaian Tujuan Pembangunan Berkelanjutan (SDG’s), khususnya pada poin 12 (Konsumsi dan Produksi yang Bertanggung Jawab).
Performance of a Batch Operation Microbial Fuel Cell (MFC) with Cobalt Micronutrient Addition Based on Kinetic Models Juliastuti, Sri Rachmania; Laily, Fitria Nur; Darmawan, Raden
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 1 Year 2025 (April 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20259

Abstract

The generation of electricity via MFC is subject to alteration by the concentration of the substrate. The objective of this study was to examine the performance of MFCs using both theoretical and experimental methods to ascertain the kinetic parameters associated with the addition of cobalt, with the aim of enhancing electricity generation via MFCs. The study demonstrated the impact of varying substrate concentrations and the composition of food waste and water, with formulas 0:5, 1:4, 2:3, 3:2, 4:1, and 5:0 (w/v). The kinetics of biochemical reactions were determined by employing the Monod and Gates-Marlar equations. The Monod equations were evaluated using three distinct representation methods. The Langmuir, Lineweaver-Burk, and Eadie-Hofstee models were employed. Conversely, the electrochemical reaction rate is evaluated through the Butler-Volmer equation. The current density derived from the theoretical approach exhibited a comparable pattern to that observed in the experimental data. The maximum power density was attained at a substrate concentration of 4:1 (w/v) exceeding 25,000 mW/m². The presented model facilitated the enhancement and optimization of MFC performance. Substrate concentration and biomass concentration exert a significant influence on MFC performance, as evidenced by the analysis of variance (ANOVA) and response surface methodology (RSM). Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Silica Synthesis from Mount Semeru Volcanic Ash as a Nickel Heavy Metal Adsorbent Darmawan, Raden; Juliastuti, Sri Rachmania; Hardiatmoko, Bagas; Defriana, Aulia; Laily, Fitria Nur
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 2 Year 2025 (August 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20337

Abstract

This study aims to synthesize SiO2 gel-based adsorbents using the sol-gel method from Mount Semeru volcanic ash through varying concentrations of sodium hydroxide and acid catalysts and to determine its adsorption capacity on nickel (Ni(II)). Volcanic ash was obtained from Lumajang District, East Java, Indonesia. The silica gel adsorbent was made using the sol-gel method with different amounts of NaOH (1.0 M, 2.0 M, 3.0 M, and 4.0 M) and acid catalysts (acetic and hydrochloric acid). First, silica (SiO2) was extracted from the volcanic ash, and then the sol-gel process was used to manufacture SiO2 gel-based adsorbents. The SiO2 gel was analyzed using X-ray Fluorescence Analysis, Fourier-transform Infrared (FTIR), and Brunauer Emmett, and Teller (BET). Adsorption analysis of the Ni(II) metal ion content was conducted at various stirring rates and adsorbent dose masses. The results obtained showed that the most optimal SiO2 gel was achieved when using 3.0 M NaOH, 10.53% HCl, and 8.30% CH3COOH. Through FTIR analysis, NaOH 3.0 M x HCl silica contains only the siloxane groups, whereas NaOH 3.0 M x CH3COOH silica contains both the silanol and siloxane groups. The best results were gained with SiO2-based adsorbents (NaOH 3.0 M x CH3COOH) at a dose of 10 g/L and a stirring rate of 50 rpm, with Ni(II) adsorption effectiveness of 99.80%. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Lysis Buffers for Detecting Pork Content in Food Products Khoiriah, Ulfah Lailatul; Baydillah, Pramudja; Darmawan, Raden; Nasori, Nasori; Taufany, Fadlilatul; Gunawan, Setiyo
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.101620

Abstract

The increasing number of counterfeit processed food products with non-halal ingredients, such as pork, has caused public concern about the halalness of Indonesian food products, especially in the Muslim community. This issue has prompted the development of halal authentication techniques, including deoxyribonucleic acid (DNA) isolation followed by polymerase chain reaction (PCR) amplification to detect pork DNA. The main purpose of this research was to modify the lysis buffer using tris-ethylenediaminetetraacetic acid, cetyl trimethylammonium bromide, salt, alkaline, and urea. Two DNA extraction methods were evaluated using kit-based and conventional methods with modified lysis buffer. Using a fluorometer, it was proven that the conventional method with modified urea lysis buffer produced quite competitive DNA concentrations (119 ng for pork meat and 100.05 ng for pork sausage), as confirmed by real-time PCR analysis. As a result, the modified urea lysis buffer can be further developed because it is more affordable.
Penerapan Pangan Jajan Anak Sekolah (PJAS) pada SDN MOJO VI Surabaya dan Potensinya untuk dikembangkan menjadi ZONA Kuliner Halal Aman dan Sehat (KHAS) Kluster Pendidikan Tingkat Dasar Airlangga, Bramantyo; Rahmawati, Yeni; Juliastuti, Sri Rachmania; Darmawan, Raden; Machmudah, Siti; Aparamarta, Hakun Wirawasista; Roesyadi, Achmad; Sumarno, Sumarno; Rachmaniah, Orchidea
Sewagati Vol 9 No 4 (2025)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v9i4.2511

Abstract

Makanan sehat mendukung sistem kekebalan tubuh, menjaga tubuh tetap kuat dan siap melawan infeksi dan penyakit. Adanya penerapan program Pangan Jajan Anak Sekolah (PJAS) di SDN MOJO VI Surabaya secara tidak langsung meningkatan kesadaran siswa sekaligus orang tua siswa akan pentingnya memilih jajan anak yang aman dan sehat. Hal ini tidak hanya bermanfaat bagi siswa di sekolah, namun dalam jangka panjang akan mempengaruhi kebiasaan makan keluarga. Penerapan PJAS pada kios-kios kantin sekolah merupakan langkah awal penerapan Sistem Jaminan Halal (SJH); mengingat kriteria PJAS yang sesuai adalah aman dan bermutu selain bergizi. Sehingga PJAS yang aman dan bermutu selangkah menuju PJAS halal. Pemberian pendampingan gratis untuk pengajuan sertifikasi halal dilakukan kepada setiap kios di SDN MOJO VI Surabaya: kantin Melati, Kenanga, Anggrek, dan Mawar. Kegiatan ini membawa keberhasilan bagi SDN Mojo VI Surabaya dalam meraih juara 1 Nasional dalam kategori PJAS. Penerapan PJAS sekaligus sertifikasi halal disetiap kios kantin di SDN Mojo sangat berpotensi untuk ditingkatkan menjadi Zona KHAS. Sehingga pihak pengelola Kantin SDN MOJO VI Surabaya tidak hanya menjamin kehalalan makanan tetapi juga menjamin kebersihan dan kesehatan jajan siswanya secara keseluruhan.
Co-Authors Achmad Roesyadi Airlangga, Bramantyo Aldila, Migel Aparamarta, Hakun Wirawasista Baydillah, Pramudja Defriana, Aulia Fadlilatul Taufany Fahmi Fahmi FITRIA NUR LAILY Hardiatmoko, Bagas Hendrianie, Nuniek Khoiriah, Ulfah Lailatul Koswara, Arwi Yudhi Kusumahati, Sari Meka, Wahyu Nasori, Nasori Oktavianingrum, Eva Rachmaniah, Orchidea Samparia, Dian Asrini Setiyo Gunawan Siti Machmudah Sri Rachmania Juliastuti, Sri Rachmania Srikalimah Sumarno . Suryo, Is Bunyamin Widodo, Dwi Satriyo Wisnu, Mita Mellenia Yeni Rahmawati, Yeni Zuhdan, Alya Zahrani