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All Journal Jurnal Rekayasa Proses BERKALA SAINSTEK Indonesian Journal of Science and Technology JURNAL KONVERSI Indonesian Journal of Chemistry Warta Pengabdian CHEESA: Chemical Engineering Research Articles Jurnal Rekayasa Proses Makara Journal of Science Journal of Biobased Chemicals (JOBC) Sewagati InSTEM Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses
Felix Arie Setiawan
Department Of Chemical Engineering, Faculty Of Engineering, University Of Jember, Kalimantan 37 Jember 68121
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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Implementation of Appropriate Technology for Durian Peel Waste Extractor in Rowosari Village to Realise An Independent Village for Green Economy Kamiliah, Thiflatul; Taufiqurrohman, Muhammad; Arkan, Naufal; Brilianto, Mochamad Syadam; Alfarizi, Muhammad Alfian; Ahmad Reza Maulufi; Septiana, Windi Yudita; Syawaludin, Syafriel Razaan; Saputra, Dicky Aditya; Nurkholisah, Siti; Setiawan, Felix Arie; Rahmawati, Istiqomah
Jurnal Inovasi Sains dan Teknologi untuk Masyarakat Vol. 3 No. 1 (2025): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember. Jl. Kalimantan No.37, Krajan Timur, Jemberlor, Kec. Sumbersari, Jember Regency, East Java 68121

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v3i1.1626

Abstract

The University of Jember's Student Village Program (Promahadesa) was implemented in Pringpadhu Hamlet, Rowosari Village, Sumberjambe District, Jember Regency, with the aim of overcoming the problem of durian peel waste that has not been utilized and causes environmental pollution. This activity aims to process the waste into products of economic value through the application of appropriate technology tools (TTG) in the form of extractors. The method used in this activity is Participatory Action Research (PAR), which involves the community actively in all stages of the activity, from problem identification, planning, implementation, to evaluation. The implementation of activities includes: design and assembly of household scale extractor tools, pretreatment of durian skin waste, the process of making dish soap and liquid organic fertilizer (POC), as well as socialization and demonstration of tools to the community. The results of this activity are the creation of TTG extractor tools and two main processed products, namely dish soap and POC, which are produced from durian skin distillate. The conclusion of this activity shows that the application of technology can increase community knowledge, minimize environmental pollution, and potentially add local economic value through the utilization of waste into village superior products.
A Comparison of Unconventional Microwave and Ultrasound-Assisted Extraction Methods used for Flavonoids Rahmawati, Istiqomah; Azizi, Daffa Hafiziaulhaq; Wibowo, Jihan Nafila; Reza, Muhammad; Fachri, Boy Arief; Palupi, Bekti; Rizkiana, Meta Fitri; Amini, Helda Wika; Ramadana, Ifan; Setiawan, Felix Arie
Makara Journal of Science Vol. 29, No. 1
Publisher : UI Scholars Hub

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Abstract

Cocoa pods (Theobroma cacao L.) are a rich source of flavonoids, which are natural antioxidants known for their health benefits. This study investigated the use of microwave-assisted extraction (MAE) and ultrasound-assisted ex-traction (UAE) to extract the maximum flavonoids and antioxidants from cocoa pods. MAE and UAE are efficient and sustainable methods for extracting bioactive compounds like flavonoids and antioxidants from cocoa pods, offer-ing faster extraction, reduced solvent use, and better compound preservation compared to conventional methods. These technologies unlock the untapped potential of cocoa pods for applications in food, cosmetics, and pharmaceuti-cals. The effects of extraction time (2–10 min), microwave power (100–300 W), and the ratio of cocoa husk powder to solvent (0.02–0.06 g/mL) were evaluated for MAE. Meanwhile, for UAE, different temperatures (30–50 °C), times (10–30 min), and powers (16–48 W) were studied. The Design-Expert® software with Response Surface Methodology (RSM) and a Box-Behnken Design was utilized to analyze the effects of a combination of these parameters. The re-sults showed that extraction time, microwave power, and the ratio of cocoa husk powder–solvent significantly affected the total flavonoid yield and antioxidant capacity. The highest total flavonoid yield obtained by the MAE method (123.07 ppm) was at an extraction time of 10 min, cocoa husk–solvent ratio of 0.06 mg/mL, and microwave power of 300 W. The extract obtained by the MAE method showed an excellent antioxidant capacity of 43.49 mg/mL GAEAC, and a robust antioxidant activity indicated by an IC50 value of 42.19. Conversely, the highest total flavonoid yield of the UAE method (8.45 mg/mL GAEAC) was achieved at 30 min, 40 °C, and 40 W. The extract from the UAE method demonstrated a better antioxidant capacity (7.51 mg/mL GAEAC) and antioxidant activity (IC50 value of 23.46) than that from the MAE technique
Pengolahan Limbah Kulit Singkong dengan TTG Alat Pencetak Biobiobriket Sebagai Inovasi Bahan Bakar Berkelanjutan Bagi IRTP Tape Singkong Di Jember Yukti Nurani; Helda Wika Amini; Felix Arie Setiawan; Puji Newi Diati; Kholifatur Risma; Chintha Ananda Fidia Ningrum; Melati Dwi Pramudita; Safira Dian Permata
Sewagati Vol 10 No 1 (2026)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v10i1.8715

Abstract

Sentra produksi tape singkong skala rumah tangga di Kabupaten Jember salah satunya berada di kecamatan Patrang di Kelurahan Bintoro, yang setiap harinya menghasilkan limbah kulit singkong dalam jumlah besar. Limbah tersebut hingga kini belum dimanfaatkan secara maksimal dan cenderung dibuang atau dibakar. Di sisi lain, proses produksi tape masih bergantung pada kayu bakar yang kurang efisien dan menimbulkan dampak negatif terhadap lingkungan dan kesehatan. Tujuan dari kegiatan pengabdian masyarakat ini adalah untuk mengimplementasikan teknologi tepat guna (TTG) alat pencetak biobriket kepada IRTP Tape Singkong Bu Holim. Metode pelaksanaan meliputi tahap perencanaan, pelaksanaan berupa sosialisasi dan pelatihan teknis, serta monitoring dan evaluasi. Sosialisasi dan pelatihan teknis dilakukan secara partisipatif, melibatkan pekerja IRTP Tape Singkong Bu Holim dan warga sekitar dalam seluruh proses mulai dari pengeringan, pencampuran, pencetakan hingga pengeringan akhir. Hasil uji laboratorium menunjukkan bahwa biobiobriket memiliki kadar air 12,1%, kadar abu 20,9%, dan nilai kalor 3709,520 kkal/kg, Meskipun belum sepenuhnya mencapai kriteria kualitas yang ditetapkan dalam SNI 01-6235-2000, produk ini tetap menunjukkan potensi sebagai bahan bakar alternatif yang lebih bersih. Secara ekonomi, biaya produksinya sebesar Rp8.000/kg. Penerapan teknologi ini terbukti mampu mengurangi limbah, mengurangi penggunaan kayu bakar, serta membuka peluang wirausaha berbasis energi alternatif yang lebih ramah lingkungan.
Socialization of Vegetable Waste Processing into Eco-Friendly Fish Pellets at SMK Muhammadiyah 7 Gondanglegi Rahmawati, Istiqomah; Ansori; Arie Setiawan, Felix; Palupi, Bekti; Fachri, Boy; Rizkiana, Meta; Mumtazah, Zuhriah; Kharisma Yolanda Putri, Ditta; Dwi Lestari, Fitria; Naufal Nizaar Aziz, Mohamad; Pramasta, Ady
Jurnal Inovasi Sains dan Teknologi Untuk Masyarakat Vol. 4 No. 1 (2026): Mei
Publisher : Faculty of Mathematics and Natural Sciences, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/instem.v4i1.60007

Abstract

Vegetable waste is often discarded without further processing, which can lead to environmental pollution. In fact, this waste still contains 12.64%–23.5% crude protein and 20.76%–29.18% crude fiber, which can be repurposed into an environmentally friendly, value-added product: fish pellets. The lack of understanding regarding this waste poses a challenge, necessitating alternative solutions. This outreach method serves as an educational solution to enhance understanding of the potential of vegetable waste as a raw material for fish pellets. The outreach activity was conducted at SMK Muhammadiyah 7 Gondanglegi and was attended by students from various departments. The implementation stages included preparation, outreach, and evaluation. During this activity, participants were provided with materials on the benefits of vegetable waste and the steps for processing it into fish pellets. A question-and-answer session followed this to allow participants to explore the material in greater depth. The results of this activity have tangibly improved participants' understanding of processing vegetable waste into fish pellets. Participants played an active role and participated enthusiastically in this activity, creating a positive impact on both the participants and the school. Consequently, this activity can be further developed with the school's support to ensure the program's sustainability.  
Natural Sources Screening for Antimicrobial Agent of Herbs, Spices, and Extracts: A Semi-Qualitative Study Felix Arie Setiawan; Meta Fitri Rizkiana; Bekti Palupi; Istiqomah Rahmawati
JOBC Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : University of Jember

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Abstract

Indonesia has been recognized for its rich natural ingredients such as spices,herbs, and extracts for decades. Furthermore, these components also have been used as an herbal medicine for a long time. Meanwhile, the apparent capability comparison of several components of antimicrobial activity has not been updated yet. This study was conducting the comparison of antimicrobial activity for several materials such as noni (Morinda citrifolia), garlic (Allium sativum), celery (Apium graveolens), galangal (Alpinia galangal), ginger (Zingiber officinale), yellow turmeric (Curcuma longa), lime (Citrus aurantifolia), papaya (Carica papaya) leaf, betel (Piper betel) leaf, and cutcherry (Kaempferia galangal) using agar dilution method. Two types of bacteria are used for the test, namely gram-negative bacteria and gram-positive bacteria, with a total of seven bacteria. The media used were TSA (Trypticase Soy Agar) media for gram-negative bacteria and MRSA (Methicillin-Resistant Staphylococcus Aureus) media for gram-positive bacteria. This study had been conducted by using a fast screening method, which is referred to as a semi-qualitative method. Several components, such as noni, lime, and betel leaf, showed a significant result of antimicrobial activity. Otherwise, other compounds, surprisingly, could not suppress bacterial growth.
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 Afred, Merymistika Yufrani Agus Prasetya Ahmad Reza Maulufi Alfarizi, Muhammad Alfian Alfun Ni’matil Husna Ambrosius Aditya Ambrosius Aditya Antoko Ansori ansori ansori Ari Susanti Arkan, Naufal Atiqa Rahmawati Azizi, Daffa Hafiziaulhaq Bekti Palupi Boy Arief Fachri Brilianto, Mochamad Syadam Chintha Ananda Fidia Ningrum Conny Julanda Ayanie Conny Julanda Ayanie Ditta Kharisma Yolanda Putri DWI LESTARI, FITRIA Edia Rahayuningsih Fachri, Boy Halomoan Siagian Helda Wika Amini Helda Wika Amini Heru Pratomo Al Hilda Huril Ainia Himawan Bayu Petrus Himawan Tri Bayu Murti Petrus Himawan Tri Bayu Murti Petrus I Made Arimbawa Isana Supiah Yosephine Louise Istiqomah Rahmawati Istiqomah Rahmawati Kamiliah, Thiflatul Kholifatur Risma Melati Dwi Pramudita Meta Fitri Rizkiana Muhammad Reza Muhammad Taufiqurrohman, Muhammad Muharja, Maktum Naufal Nizaar Aziz, Mohamad Nurkholisah, Siti Pramasta, Ady Puji Newi Diati Putri, Navisa Ayudia Ramadana, Ifan Ratri Sekaringgalih Rizki Fitria Darmayanti Rizkiana, Meta S. Sulistyani Safira Dian Permata Saputra, Dicky Aditya Septiana, Windi Yudita Siti Marwati Sonya Hakim Raharjo Syawaludin, Syafriel Razaan Wibowo, Jihan Nafila Yosephine Intan Ayuningtyas Yosephine Intan Ayuningtyas Yukti Nurani Zuhriah Mumtazah