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All Journal BERKALA SAINSTEK Sinergi The Journal of Pure and Applied Chemistry Research ROTOR: JURNAL ILMIAH TEKNIK MESIN UNEJ e-Proceeding Konversi JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya ALCHEMY Jurnal Penelitian Kimia JMM (Jurnal Masyarakat Mandiri) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Warta Pengabdian STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jurnal Kartika Kimia Jurnal Teknologi Jurnal Elemen J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Jurnal Teknik Kimia Indonesia International Journal on Food, Agriculture and Natural Resources (IJFANRES) Dedikasi: Jurnal Pengabdian kepada Masyarakat Jurnal Pijar MIPA Makara Journal of Science Logic : Jurnal Rancang Bangun Dan Teknologi Journal of Biobased Chemicals (JOBC) Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Penelitian Sains dan Teknologi Indonesia Dinamika Kerajinan dan Batik: Majalah Ilmiah
Boy Arief Fachri
Chemical Engineering Study Program, Faculty Of Engineering, Jember University, Indonesia; Research Center Of Bio-based Chemical Product
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Kinetic Extraction of Moringa oleifera Leaves using the Microwave Assisted-Extraction (MAE) Method Ghina Shofiah Adibah Khoirunnisa; Reinaldi Rizky Pratama; Ditta Kharisma Yolanda Putri; Helda Wika Amini; Boy Arief Fachri
JOBC Vol. 4 No. 2 (2024): Journal of Biobased Chemicals
Publisher : University of Jember

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

Abstract

Moringa oleifera leaves are known for their distinctive leaf shape and offer numerous health and nutritional benefits.They are rich in vitamins, minerals, proteins, and bioactive compounds and possess antioxidant and anti-inflammatoryproperties. This study aimed to explore the extraction process, identify the presence of tannin compounds in Moringa leaves, and determine the appropriate kinetic model for the extraction of Moringa leaf extract using the Microwave-Assisted Extraction (MAE) method. The extraction was performed using 96% ethanol as the solvent and the MAEtechnique, which is known to enhance extraction efficiency. Variables such as power (150 watts), a material-to-solventratio of 1:15 (b/v), and extraction times of 2, 4, 6, 8, and 10 minutes were tested. The results indicated that the highest yield was achieved after 10 minutes, with a value of 10.25%. The extraction time was extended at most 10 minutesdue to time limitations and diminishing returns as extraction time increased. The study concluded that the second-orderkinetic model (R² = 0.9897) was the most suitable for describing the extraction of tannin compounds from Moringa leaves,outperforming the first-order model with a value closer to 1.
Ultrasound-assisted liquid biphasic extraction of fucoidan from Sargassum sp. Boy Arief Fachri; Jovita Labibah; Zakia Luthfiana; Ansori Ansori; Ditta Putri
Konversi Vol 15, No 1 (2026): APRIL 2026
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v15i1.25502

Abstract

Sargassum sp.. is an essential source of fucoidan. This work aims to extract fucoidan from Sargassum sp.. using a liquid biphasic system assisted by ultrasonics. It observes the effects of various process parameters on fucoidan yield, determines the optimum extraction conditions, and develops a model for extraction kinetics. In the experiment, 80-mesh Sargassum sp.. powder is ultrasonically treated in a 2-propanol solution. Furthermore, the extract is separated by the addition of a K₂HPO₄ solution, which forms a two-phase system. Following the process, the CaCl2 is introduced to separate the alginate. Afterwards, ethanol is added to the resulting filtrate to precipitate fucoidan. This approach highlights techniques for efficient extraction and separation of fucoidan from Sargassum sp.. The process parametperaturaers included extraction time (10, 15, and 20 minutes), ultrasonic power (60%, 65%, and 70%), and the Sargassum-to-solvent ratio (0.03, 0.04, and 0.05 g/mL). This work confirms that FTIR and HPLC techniques successfully identified fucoidan. The highest yield, 14.1%, was achieved with a Sargassum-to-solvent ratio of 0.04 g/mL, an extraction time of 20 minutes, and an ultrasonic power of 70%. The results indicate that extraction time is a significant factor compared to power and the Sargassum-to-solvent ratio. The diffusion coefficient (Dₑ) of 1.425118 × 10⁻² m²/s suggests relatively rapid diffusion under the applied extraction conditions.
PENERAPAN TEKNOLOGI BIOMASS DIGESTER REACTOR DENGAN FEEDBACK CONTROL SYSTEM UNTUK PEMBUATAN BIOGAS DARI KOTORAN SAPI DALAM MEWUJUDKAN SDG’S DESA Helda Wika Amini; Boy Arief Fachri; Elida Novita; Husnul Khotimah; M Zikrillah; Moch Irgi Fadhilal Abi; Lutfia Pradisha Budiarti; Abdul Fatah Ismail; Rafly Surya Permana
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 1 (2025): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i1.28156

Abstract

Abstrak: Desa Tanah Wulan menghadapi masalah penumpukan kotoran sapi yang mencemari lingkungan dan berisiko terhadap kesehatan. Tujuan pengabdian ini adalah memberdayakan masyarakat dengan meningkatkan keterampilan teknis (hardskill) dalam pengoperasian dan pemeliharaan teknologi Biomass Digester Reactor (BDR), serta pemahaman tentang manfaat biogas. Selain itu, kegiatan ini juga bertujuan memperkuat softskill dalam kerja sama pengumpulan dan distribusi kotoran sapi melalui pembentukan kelompok kerja di tingkat RT atau dusun. Kegiatan melibatkan 6 mahasiswa Universitas Jember dan masyarakat setempat, dengan mitra Kelompok Ternak yang berjumlah 20 orang dan Pemerintah Desa yang berjumlah 10 orang. Evaluasi menunjukkan 70% anggota kelompok ternak mampu mengoperasikan reaktor dengan baik, sementara 30% masih kesulitan dalam pemeliharaan. Pemahaman masyarakat terhadap manfaat biogas meningkat sebesar 80%, namun 40% masih kesulitan dalam pengoperasian dan perawatan reaktor. Program ini memberikan manfaat ekonomi, dengan efisiensi energi dan penggunaan pupuk organik, namun memerlukan pelatihan berkelanjutan dan peningkatan kapasitas reaktor untuk mendukung keberlanjutan.Abstract: Tanah Wulan Village faces the issue of accumulated cow manure that pollutes the environment and poses health risks. The aim of this community service project is to empower the community by enhancing their technical skills (hardskill) in operating and maintaining the Biomass Digester Reactor (BDR) technology, as well as increasing their understanding of the benefits of biogas. Additionally, this project aims to strengthen the community's soft skills in collaborating on the collection and distribution of cow manure through the formation of workgroups at the RT (neighborhood) or dusun (village) level. The activity involves 6 students from the University of Jember and local residents, with the Livestock Group and Village Government as partners. Evaluation shows that 70% of livestock group members can operate the reactor well, while 30% still face challenges in maintenance. The community's understanding of biogas benefits increased by 80%, but 40% still struggle with operation and maintenance. The program provides economic benefits through energy efficiency and organic fertilizer use, but requires ongoing training and reactor capacity improvements for sustainability.
Optimization of Microwave-Assisted Extraction of Total Phenolic Content from Arabica Coffee Leaves Using Box-Behnken Design Amini, Rekfa Wika; Amini, Helda Wika; Ilham, Muhammad; Putri Hartini, Lidia; Fachri, Boy Arief; Mumtazah, Zuhriah
The Journal of Pure and Applied Chemistry Research Vol. 15 No. 2 (2026): Edition May-August 2026
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2026.015.02.8017

Abstract

Coffee leaves, which are waste products from coffee pruning, can be used as a source of natural phenolics.  This study aims to optimize the extraction process of total phenolic content (TPC) from Arabica coffee leaves using the Microwave-Assisted Extraction (MAE) method, employing the Box–Behnken Design (BBD). Three variables were studied, including ethanol concentration (50%, 73%, 96%), solvent volume (30 mL, 60 mL, 90 mL), and extraction time (3 minutes, 6 minutes, 9 minutes). Total phenolic content was analyzed using the Folin–Ciocalteu method. ANOVA revealed that solvent volume had a significant effect on total phenolic content, whereas ethanol concentration and extraction time did not. The optimum conditions, as determined by the Box-Behnken Design (BBD), were obtained at an ethanol concentration of 96%, an ethanol volume of 30 mL, and an extraction time of 6 minutes, with a desirability value of 1 and a TPC of 14.62 mg GAE/g.
Process Optimization for Bioplastic Synthesis from Ulva Lactuca with the Addition of Citric Acid and Boric Acid as Crosslinkers Yukti Nurani; Hilda Huril Ainia; Alfun Ni’matil Husna; Sonya Hakim Raharjo; Merymistika Yufrani Afred; Ansori Ansori; Ratri Sekaringgalih; Helda Wika Amini; Ditta Kharisma Yolanda Putri; Meta Fitri Rizkiana; Boy Arief Fachri; Zuhriah Mumtazah; Istiqomah Rahmawati; Bekti Palupi; Felix Arie Setiawan
BERKALA SAINSTEK Vol. 14 No. 2 (2026)
Publisher : University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v14i2.60021

Abstract

The development of renewable biomass-based bioplastics is one solution to reduce environmental pollution caused by the use of conventional petroleum-based plastics. One potential source of biomass is Ulva lactuca, which contains ulvan polysaccharides that can be used as a material for forming biodegradable bioplastic films. This study aims to determine the optimum conditions for the synthesis of ulvan-based bioplastics using the Response Surface Methodology (RSM). Bioplastics were synthesized using the solution casting method with ulvan filtrate as the main matrix and polyvinyl alcohol (PVA) as the supporting polymer, with glycerol and sorbitol as plasticizers and citric acid and boric acid as cross-linkers. Optimization was performed using a Box–Behnken design with 17 experiments, with independent variables of boric acid mass (0.025 - 0.075 g), mixing temperature (65 - 75 ˚C), and mixing time (15 - 25 minutes). The optimization results showed that optimal conditions at a mixing temperature of 70 °C, boric acid mass of 0.05 g, and mixing time of 20 minutes, with point prediction of 4.1476 MPa in tensile strength, thickness of 0.088 mm, and desirability value of 1. The statistical model for tensile strength demonstrated an R2 value of 0.9468, an adjusted-R2 of 0.8785, and a lack-of-fit value of 0.3024. Meanwhile, the thickness model exhibited an R2 value of 0.9792, an adjusted-R2 of 0.9524, and a lack-of-fit value of 0.7510.
Co-Authors Abdul Fatah Ismail Abdul Malik Karim Amrullah Achmad Rodi Soleh Adelina, Saltsabita Nourin Adrian, Febri Afred, Merymistika Yufrani Afwal, Diza Raudhatul Agus Rahman Ahmad Reza Maulufi Ahmad Syuhri Akbar Anugrah Ikhsani Al Fajri, Maktum Muharja Alex Ttesa Elsyamba Alfinaini, Nur Aini Dwi Alfinaini Alfun Ni’matil Husna Alifia Rahma Putri Neysella Amalia Ramadhan Anak Agung Nabilla Azzahrah Anggraini, Ranita Anggi Annisa, Yasmin Ansori Ansori Ansori Ansori ansori ansori Ardila Dwi Tresna Ari Susanti Arief Budiman Aris Zainul Muttaqin Asshofy , Muhammad Agil Atiqa Rahmawati Atiqa Rahmawati Azizi, Daffa Hafiziaulhaq Badril Azhar Badril Azhar Bekti Palupi Bimo Bayu Aji Danang Muharyanto Devi Prayuga Dianavita Fatimah Digdo Listyadi, Digdo Dihayat, Icha Shofia Dini Rahmawaty Ditta Kharisma Yolanda Ditta Kharisma Yolanda Putri Ditta Putri Doddy Parningotan Dwi Intan Noer Aini Elida Novita Elisah, Nor Elsyamba, Alex Ttesa Endar Hidayat Erna Subroto Farwah, Zilma Aliyah Fatimah, Dianavita Felix Arie Setiawan Firmansyah, Muhammad Sahrul Gavinda Tsubutul Akmal Ghina Shofiah Adibah Khoirunnisa Gregah Pangayoman Hartanto P Habibatul Inayah Harti Arini Helda Wika Amini Helda Wika Amini Helda Wika Amini Helda Wika Amini Heni Pujiastuti Herdianto, Dimas Nur Hidayat, Debby Aurellia Hilda Huril Ainia Hilda Huril Ainia Hosshofil Azhar Azizi Husnul Khotimah I Made Arimbawa Icha Shofia Dihasti Ilyas Arya Pratama Indrayani, Lilin Intan Hardiatama Istiqomah Rahmawati Istiqomah Rahmawati Istiqomah Rahmawati Istiqomah Rahmawati Jovita Labibah Kristianta, Franciscus Xaverius Lailatul Fatma Lalu Dimas Putra Hermanto Lestari, Afrila Tutut Dwijati Lilis Nurhasanah Lukman Nulhakim Lumbantoruan, Sri Lestari Lutfia Pradisha Budiarti M Edoward Ramadhan M Yuda Pratama M Zikrillah Maharani, Regita Gustiayu Pramisti Mahfud Mahfud Mahfud Mahfud Mahros Darsin Maktum Muharja Maulida Septiyana Megasari, Tri Elok Setya Merymistika Yufrani Afred Meta Fitri Rizkiana Meta Fitri Rizkiana Meta Fitri Rizkiana Mizanurafi’ Ghifarhadi Prasiefa Moch Irgi Fadhilal Abi Mochamad Edoward Ramadhan Mochamad Ghaza Al Ghifari Moh. Nurkoyim Kustanto Mohammad Fathur Rohman Y. Mohammad Nor Muhammad Ilham Muhammad Nabil Suryagama Muhammad Reza Muhammad Reza Muhammad Rizky Kurniawan Muharja, Maktum Mukhammad Fauzi Nabilah Lu’aili Fauziah Nabilla Widya Rahman Nadia Ayumna Fa’iqoh Naily Fatimatuz Zaroh Nanda Ayudiyah Andriani Nayyara Aida Buana Nida Ayu Salsabila Nikita Meidi Nirina Indi Naraismanti Nova Chintya Kurniawati Nova Chintya Kurniawati Nugraha, Briantara Agung Nugroho, Yeremia Prasetya Nur Aini Dwi Alfinaini Nur Karima Nur Karima Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah, Nurtsulutsiyah Ocita Galuh Permatasari Pradipta, Shima Nuril Pratamai Shelli Pravitasiwi, Nanda Tricya Julia Purimahua, Amanda Augre Maharani Puspita Sari Putri Ayu Salsabila Putri Hartini, Lidia Putri, Navisa Ayudia Putri, Salsabila Ananda R Rochmadi Rafly Surya Permana Rahman, Agus Ramadana, Ifan Ratnasonia, Samantha Githa Ratri Sekaringgalih Ratri Sekaringgalih Regita Gustiayu Pramisti Maharani Reinaldi Rizky Pratama Rekfa Wika Amini Rekfa Wika Amini Renald Rochman Mauludy Reswara Musyafa Richa Febyola Surya Putri Rizalluddin, Muhammad Rizki Abdus Syatar Rizki Fitria Darmayanti Rizki Fitria Darmayanti Rizky Pratama, Reinaldi Rumaisha-Zuhriansyah, Rayya Safira Nur Oktavia Samantha Githa Ratna Sonia Santoso Mulyadi Sa’roni, Achmad Sella Violina Anggraeni Septianti, Kiki Shabrina, Nadhilah Shariska Putri Devina Sholeha, Irdatus Slamet Pujianto Sonya Hakim Raharjo Sutarsi, Suratsi Syatar, Rizki Abdus Tri Elok Setya Megasari Udroto, Firsta Retnaningtyas Uzinuzulla, Yunita Virda Wardani, Salza Belila Kusuma Wardhani, Maharani Tri Watiningsih, Lusi Karlina Wibowo, Jihan Nafila Wiwik Pratiwi Yakub Hendrikson Manurung Yeremia Prasetya Nugroho Yukti Nurani Zakia Luthfiana Zuhriah Mumtazah