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All Journal Medicina JURNAL EMBA : JURNAL RISET EKONOMI, MANAJEMEN, BISNIS DAN AKUNTANSI Jurnal Pendidikan Anak Usia Dini Undiksha Jurnal Pendidikan dan Pembelajaran Khatulistiwa (JPPK) PAUD Teratai BERKALA SAINSTEK Alchemy : Journal of Chemistry Jurnal Online Mahasiswa (JOM) Bidang Ilmu Sosial dan Ilmu Politik Jurnal sistem informasi, Teknologi informasi dan komputer Dinamika Pelita Perkebunan The Journal of Pure and Applied Chemistry Research Journal of Aquatropica Asia J-PEK (JURNAL PEMBELAJARAN KIMIA) Indonesian Journal of Early Childhood Education Studies Majalah Kesehatan FKUB Jurnal Obsesi: Jurnal Pendidikan Anak Usia Dini BIOEDUKASI Orbital: Jurnal Pendidikan Kimia Jurnal Biologi Tropis Jurnal Ilmiah Manuntung Jurnal Laut Khatulistiwa Jurnal Akuatiklestari METHOMIKA: Jurnal Manajemen Informatika & Komputerisasi Akuntansi Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal GEOSAPTA Jurnal Pelita PAUD Jurnal Golden Age PRoMEDIA Jurnal Mina Sains Jurnal Kartika Kimia Aulad : Journal on Early Childhood Unes Law Review Media Bahasa, Sastra, dan Budaya Wahana Al-Ard: Jurnal Teknik Lingkungan ESENSI: Jurnal Manajemen Bisnis Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Menara Ilmu Jurnal Pertanian UMSB: Penelitian dan Kajian Ilmiah Bidang Pertanian Portal: Jurnal Teknik Sipil TARBAWI: Journal on Islamic Education Jurnal Penelitian Sosial Ilmu Komunikasi Riyadhoh : Jurnal Pendidikan Olahraga Indonesian Journal of Halal Research Jurnal Mutu Pangan : Indonesian Journal of Food Quality Syntax Idea Dinasti International Journal of Education Management and Social Science Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Jurnal Prima Medika Sains Journal Cerita: Creative Education of Research in Information Technology and Artificial Informatics Jurnal Inovasi dan Teknologi Pembelajaran (JINOTEP) Kajian dan Riset Dalam Teknologi Pembelajaran MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Journal of Sport Coaching and Physical Education Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Pengabdian kepada Masyarakat Nusantara Nusantara Science and Technology Proceedings MURHUM : JURNAL PENDIDIKAN ANAK USIA DINI EKOMABIS: Jurnal Ekonomi Manajemen Bisnis IJPD (International Journal Of Public Devotion) Ceria: Jurnal Program Studi Pendidikan Anak Usia Dini INVENTORY : Industrial Vocational E-Journal On Agroindustry Bioscientist : Jurnal Ilmiah Biologi Jurnal Pengabdian Masyarakat Indonesia Journal of Maritime Empowerment UNES Journal of Swara Justisia ARRUS Journal of Social Sciences and Humanities JP2KG AUD (Jurnal Pendidikan, Pengasuhan, Kesehatan dan Gizi Anak Usia Dini) Jurnal Riset dan Aplikasi Mahasiswa Informatika (JRAMI) Cermin Dunia Kedokteran Transformasi dan Inovasi : Jurnal Pengabdian Masyarakat COJ (Coastal and Ocean Journal) UC Journal: ELT, Linguistics and Literature Journal Journal of Information Systems and Management Jurnal Pengabdian Pada Masyarakat Indonesia (JPPMI) Jurnal Locus Penelitian dan Pengabdian Journal of Early Childhood and Character Education Penamas: Journal of Community Service Tameh : Journal of Civil Engineering Kande : Jurnal Ilmiah Pendidikan Bahasa dan Sastra Indonesia Jurnal Rekayasa Teknik dan Teknologi Edukasia: Jurnal Pendidikan dan Pembelajaran Makara Journal of Science Indonesian Journal of Informatic Research and Software Engineering Barakuda 45 Journal of Halal Science and Research The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy JKMP (Jurnal Kebijakan dan Manajemen Publik) Jurnal Dinamika Akuntansi dan Bisnis (JDAB) International Journal of Disaster Management eProceedings of Engineering Eduvest - Journal of Universal Studies Journal of Biobased Chemicals (JOBC) Indonesian Chimica Letters Innovative: Journal Of Social Science Research Jurnal Pengmas Kestra (JPK) Hijaz: Jurnal Ilmu-Ilmu Keislaman Nanggroe: Journal Of Scholarly Service Communautaire: Journal of Community Service Jurnal Pengabdian Masyarakat Bangsa Chimica Didactica Acta : Journal of Chemistry and Chemistry Education Business and Investment Review Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis Jurnal Smart Paud Nanggroe: Journal of Scholarly Service Kanun: Jurnal Ilmu Hukum Journal of Innovative and Creativity Mitsaqan Ghalizan Jurnal Pengabdian Fakultas Pertanian Universitas Lampung Jurnal Ilmiah Teknik Sipil dan Arsitektur (JITAS) AKSIOMA : Jurnal Sains Ekonomi dan Edukasi Jurnal Kreatif : Karya Pengabdian untuk Masyarakat Aktif dan Inovatif Indonesian Journal of Cosmetics al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Agripet JIPP Applied Information Technology and Computer Science (AICOMS) Jurnal Dinamika Penelitian: Media Komunikasi Penelitian Sosial Keagamaan Jurnal Pelita PAUD Journal of Green Engineering for Sustainability Barik JIEP: Jurnal Ilmu Ekonomi dan Pembangunan Jurnal Manajemen Bisnis Aslama: Jurnal Pendidikan Islam Jurnal Akuntansi Kontemporer Jurnal Ilmiah Mahasiswa Pendidikan Geografi Ekonosfera: Jurnal Ekonomi, Akuntansi, Manajemen, Bisnis dan Teknik Global
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Journal : Indonesian Chimica Letters

Effect of Zeolite Concentration on Hydrogel Characteristics of Arrowroot-Based Starch-G-Poly(Acrylic Acid)/Zeolite Composite Sjaifullah, Achmad; Saputra, Beny Akhmat; Adiwinata, I Nyoman; Santoso, Agung Budi; Busroni; Reza, Muhammad
Indonesian Chimica Letters Vol. 1 No. 2 (2022)
Publisher : Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (856.304 KB) | DOI: 10.19184/icl.v1i2.201

Abstract

This study aims to synthesize a hydrogel zeolite composite of arrowroot starch graft copolymerized with acrylic acid through a radical polymerization reaction in a water. Various scenarios were tested using different natural zeolite concentration to determine the impact on swelling/water absorption of the composite. The resulting product was a solid gel-the test results showed that the swelling increased as the ratio of starch to acrylic acid decreased. Increased starch concentrations generally lead to decreased water absorption (swelling capacity). Adding a zeolite improved swelling to some extent and the optimum zeolite concentration was 60%. The increased concentration of zeolite also hardened the hydrogel composite. The highest swelling in the hydrogel composite of starch-g-poly(acrylic acid)/zeolite 60% is 1056.25 g.g-1. FTIR analysis of functional groups was conducted to determine differences in the IR spectra of arrowroot starch, acrylic acid, hydrogels, zeolites, and composite hydrogel. Si-O signal appearing on the IR spectra of hydrogel composite with wave number 1030 cm-1 indicates that composite hydrogel with zeolite was synthesized
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.
Isolation and Transformation of Tefrosin From The Seed of Tephrosia Vogelii With SelectfluorTM Yulvia, Ana; Hermawati, Elvira; Danova, Ade; Oktavianawati, Ika; Reza, Muhammad
Indonesian Chimica Letters Vol. 3 No. 2 (2024)
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.v3i2.4274

Abstract

In this study, tefrosin (1), a known phenolic compound, was successfully isolated and identified from the seed extract of Tephrosia vogelii. The structure of this compound was determined based on 1D and 2D NMR spectroscopy. Furthermore, the isolated compound was transformed using 0.5 equivalent of selectfluor™ in acetonitrile solvent at 100 oC for 3 hours. The reaction product, namely dehydrotephrosine (2), is new reaction product from selectfluor™ reagent as a catalyst in tertiary alcohol dehydration in aromatic group. This finding highlights the effectiveness of selectfluor™ as a catalyst in dehydration reactions, demonstrating its potential to introduce new chemical properties to compounds. The study underscores the versatility of selectfluor™ and its ability to facilitate the generation of valuable derivatives from phenolic compounds. These results provide insights into the reactivity of tefrosin and offer a new approach for chemical transformations involving phenolic substrates.
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 'Aini, Munadiya Qurrotul A Halim A'yuniyah, Qurotul A.K, Putri Shagita Dyah Abass, Kasim Sakran Abdul Wahab Abdi, Abdul Wahab Abdullah Aman Damai Achmad Sarwandianto Achmad Sjaifullah Achmad Sjaifullah Ade Danova Adean Mayasri Aditiya, Syahrin Adiwinata, I Nyoman Adrian, Febri Afifah, Alfiah Nur afri yanda, geri Afrianti, Nur Afni Afwal, Diza Raudhatul Agung Budi Santoso AGUS HARIANTO AGUSTIN, SOFIYANA Aiko, Keisya Putri Ainal Mardhiah Aisyah Aisyah Al Supandi, Nur Muhammad Tirta Weuning Alam, Huud alamsyah, Feri ferdinan ALDA PRAWANTI, ALDIBIYA Alexandra Hukom, Alexandra Alfiah, Masrurotul Aliati, Nina Alkhaira, Fathin Amalia Khoirunnisa, Arsa Amalia Sutriana Amanda, Devina Aminah Aminah Anceu Murniati Anggraini, Ranita Anggi Anida, Choirun Nisa Anni Alvionita Simanjuntak Annisa, Yasmin Annissa, Devi Ardi, Unggul Suryo Ardiansyah Dores Arie Hardian Arief Setyanto Aris Munandar, Nadaa Haniyyah Arituan, Bismart Aryo Sasmita Asbari, Masduki Ashari, Dienda Nur Fitria Asnawati Asnawati Asqolani, Asqolani Asriah Nurdini M. Atiek Rostika Noviyanti AUDIA YUDANTIKA, BELA Aulia, Eldiani Awaluddin Awaluddin Ayu, Maulida Azhar, Anang Anas Azizi, Daffa Hafiziaulhaq Bambang Piluharto Barkah, Januar Basunjaya, Buyung Libna Bekti Palupi Berta Putri Boy Arief Fachri Busroni Busroni, Busroni Caesario, Rachmad Cahyani, Nurul Candra, Rovi Chantia, Rhena Cut Nila Thasmi, Cut Nila Dakhi, Herman Fland Damayanti, Inggar Dani Gustaman Syarif Dania, Nur Dasrul Dasrul Daulay, Aswan David Julian David Paul Elia Saerang David Rizar Nugroho Dedi Saputra Delis, Putu Chintia Denia Maulani Deny Sapto Chondro Utomo Dewi Komalasari Dharmawan, Aditya Dwiki Dhiaurrahmi, Dhiaurrahmi DHONI PUTRA SETIAWAN Dian Herawati Diana, Nasri Dina Angelika Dinda Ayu Kartika Dwi Indarti DWI SURYANTO Effendi, Muhammad Eka Cahya Maulidiyah, Eka Cahya Eka Putri, Septi Malidda Eka, Eka Supriyanti Ely Endro Prasetyo Wahono Entin Daningsih Epa Paujiah, Epa Eri Saputra Fadhilah, Raudhatul Fadzil, Alivia Nur Fahira, Nada Nadya Fairuzillah, Muhammad Naufal Fajar, Aulia Fakhruddin Fakhruddin FANI TRIANA, WIDYA Farwah, Zilma Aliyah Fatwa, Muhammad Iqbal Fauzi, Rifki Ahmad Fauzi, Risky Ahmad Felix Arie Setiawan Feri Kusnandar Fiana, Lisa Fitri Finnalia, Shania Finte Nate, Aisya Firayanti, Yuni Firmanto, Hendy Fitriati, Diana Fokky Fuad Gailani, Jauhairiyah Girsang, Ira Veronika Gunawan Siregar, Ace Indra Gustaman Syarif, Dani H, Nabil Fadlila Alifian Haffyandi, Recky Ahmad Hafiz, Abdul Hafizuddin Hafizuddin Haifa, Nur Haikal, Abdurrozieq Hajisamae, Sukree Halim, Riyan Hamama, Rosi Hamidah, Laila Handayani, Kiki Yuli Hanum, Lutvia Harahap, Nursapian Harijanto Sabijono Helda Wika Amini Heni Pujiastuti Herlina Jasa Putri Harahap Herman Yulianto Hermawati, Elvira Herrialfian, Herrialfian Humaira, Novida Husnah, Siti Lailatul Husni, Annisa Aulia Husnurrizal, Husnurrizal I Gusti Agung Ngurah Sugitha Adnyana I Gusti Agung Trisna Windiani I Gusti Ngurah Sanjaya Putra I Putu Gede Karyana Idaryani Idaryani Ika Oktavianawati IKA SARI RAKHMAWATI, NUR Ilham Zulfahmi Indra Gumay Yudha Irawan Irawan Irvandi, Dede Ishak Bachtiar Iskandar Iskandar Islam, Muh Ariffudin Istigfarin, Izza Rania Istiqomah Rahmawati Ivandika, Muhammad Ardra Janiati, Nia Jasmansyah, Jasmansyah Jecky Asmura Julian, David Juliana, Putri Juni Ahyar Junita Elizabeth Br. Siahaan, Cristy Kahri, Ma'ruful Kapura Sary, Dwi Karaman, Jamilah Kartika Darma Handayani Karya, Teguh Khairunnisa, Indah Kharisma, Kharisma KHOLIDAH ZAHWA, ALFY Kuswanta Futas Hidayat L. Lisnawati Lahay, Almira Fardani Lana Izzul Azkia, Lana Izzul Larasati, Winda Lorensa, Sisi Marda Lumi, Amiko Nashita Lusi Ariyani Lutvia Rizmasari, Alifta Dina Luwandi Suhartono M Imran Hasanuddin Made Darmajaya Mahara, Emi Mahara, Husnah Mahdavikia, Annisa Majuar, Edi Mallevi Agustin Ningrum, Mallevi Agustin Mandasari, Junika Marpaung, Rani Nirmala Martawati, Dia Martono Tri Utomo Mas’udah, Mas’udah Mayaguezz, Henky Melana, Lilis Meta Fitri Rizkiana MIFTAKHUL JANNAH Mirsa, Rinaldi Mirza Desfandi Mirza Fahmi Moh Iqbal Assyauqi Muammar Yulian Muhamad Gilang Arindra Putra Muhammad Dahlan Muhammad Daud Muhammad fauzan Muhammad Kholiqul Amiin Muhammad Muhammad MUHAMMAD RIZAL Muhtarom, Ahmad Amiruddin Musadad Musadad Muslihin Muslihin Muslima, Alfia Tawaffani Musroni, Gabriel N, Nurhafizah Nadhifa, El Pasya Athalla Nafisah, Aulia Zakiyatun Najahi, Rosikhotun Nasution, Nino Nazmi, Saura Alaifa Ni Nyoman Metriani Nesa Nisa, Aliyatun Nisaul Fadillah Nisrina, Aniqa Nofrita, Wely Novianti Novianti Novianti, Yuniar Siska Noviza Rizkia Nupus, Nizawaton Nur Azmi, Nur Nurfebruary, Nanda Sitti Nurhakim Nurhakim Nurhayati, Mita Nurhenti Dorlina Simatupang NURHENTI DORLINA SIMATUPANG Nurhuda Nurhuda Nurmalahayati Nurdin Nurmalasari, Siti Nurtsulutsiyah, Nurtsulutsiyah nurul khotimah Nuryadin, Ridho Akbar Oktavianawati , Ika Oktorisa, Tanti Otong Rosadi Pangaribuan, Dela Safitri Panjaitan, Wildan Parded, Wenty Magdalena Popy Meilina Pradipta, Shima Nuril Pratama, Andhika Priyambada, Gunadi Pungan, Yudi Purba, Anita Sri Gandaria Purwanto, Edi Putra, Muhamad Gilang Arindra Putra, Regi Adi Putri, Ainil Putri, Anggita Rachmadhani Pramasintha Putri, Bella Diana Putri, Pelangi Deana Putri, Septi Malidda Eka Putri, Tikarahayu Putriani, Rizha Bery Qadar Hasani Rachma Hasibuan Radityani, Fitri Afina Rahima Rahima Rahmah, Adnin Rahmi Rahmi Rakhmawati, Nur Ika Sari Rakhmawati, Nur Ika Sari Ramadana, Ifan Ramadani, Nofa Ramadhani, Tarisa A. Ramdan, Aldi Rouf Rara Diantari Ratnawati Ratnawati Revida , Erika Ridho Akbar Nuryadin Ridho, Moh Zeinur Rifki Hidayat Rina Saraswaty Risa Etika, Risa Robaniyah, Septiana Kholifatur Rodesia Mustika Rozi Rohmatun Mazidah, Rohmatun Rony, Zahara Tussoleha Ruqiah Ganda Putri Panjaitan Ruqoyyah Fitri Rusdiati Helmidanora Ruslah, Ruslah S, Suratini Sa'diyah, Siti Aminatus Sabila Adinda Puri Andarini Sabirin Sabirin, Sabirin Sabrina Sabrina Saffanah, Arla Haiqa Safriyana, Anggi Salaga, Desi Triana Saleh, Yuliana Salsabila B.S., Siti Raihan Sampurna, Mahendra Tri Arif Sapitri, Dea Saputra, Beny Akhmat Saputra, Edy Suchmawan Saputra, Meli Sardi Duryatmo Sari Rakhmawati, Nur Ika Sarifah Aini Sariswara, Valianty Saskia Aziza Nursyirwan, Saskia Aziza Sa’roni, Achmad Septiani, Laras Septiani, Uray Rina SEPTIANY, INTAN Setiyawati, Neni Shabrina, Nadhilah Sholikha, Titis Silvino Violita, Evony Simbolon, Tiur Roida Siswoyo Siswoyo Siti Fatimah Sitti Nurbaya Soetjiningsih - Sopyan Saori Sri Setyowati Sri Widawati Sri Widayati Subianto, Pratiwi Sugesta, Muhammad Yongki Ivan Suharnida, Yuni Sukawaty, Yullia Sulaeha Sulaeha, Sulaeha Sulistyo, Yudi Aris Suluh, Siang I Susanti, Tria Sya'dullah, Achmad Syahfaradila, Syahfaradila Syaifudin, Andang Syaiful Rahman Syarwan, Syarwan Syihabuddin Syihabuddin Takari, Dedi Tambunan, Efrida Pima Sari Titit, Marcelus Ferdinandez Trianasari, Amilia Tuah Damanik, Harlen Tumiang, Kresensia Imakulata Ula, Mohammad Munal Vivianlai, Stevani Wahdini, Wahdini Wahidah, Fatin WAHYU SARI, UCI Wahyudi Wahyudi wahyuni wahyuni Wahyuningrum, Ratih Wardhani, Maharani Tri Waruwu, Ria Aprilia Wedy Nasrul Wibowo, Jihan Nafila Wibowo, Revi Setia Widayanti, Melia Widayanti, Melia Dwi Widya Aryanti, Widya Wiwi Isnaeni Wuryanti Handayani Yansah, Ahmad Febri Yanti Sri Rejeki Yanti, Reflina Afri Yenni Yenni Yes Matheos Lasarus Malaikosa Yogaprasta A Nugraha Yuliana, Darma Yulihasri Yulvia, Ana Yunita Sopiana Yusniyanti, Erna Yusrizal Akmal Yusuf, Arief Rahman Yusup, Maulid Wahid Zahro', Harisatuz Zakiah, Wiwin Zuhro, Syarifa Aminatuz Zulfikar Zulfikar