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Wachju Subchan
FKIP UNEJ
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Mathematics Social Sciences Other

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Peningkatan Pengetahuan Nilai Tambah Limbah Cangkang Pupa Black Soldier Fly Bagi Pembudidaya Maggot Kusumawardani, Banun; Rahayu, Yani Corvianindya; Joelijanto, Rudy; Handoyo, Tri; Dewanti, Parawita; Subchan, Wachju
Jurnal KARINOV Vol 7, No 2 (2024): Mei
Publisher : Institute for Research and Community Service (LP2M), Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um045v7i2p136

Abstract

Proses penguraian sampah organik dengan biokonvertor Black Soldier Fly (BSF) dilakukan pada tahap larva, sehingga saat BSF menjadi lalat dewasa, bertelur dan mati akan meninggalkan limbah media bekas maggot, cangkang pupa dan bangkai lalat. Limbah media bekas maggot digunakan untuk bahan kompos, sedangkan limbah cangkang pupa dan bangkai lalat belum dimanfaatkan. Timbunan limbah cangkang pupa dan bangkai lalat setelah siklus hidup BSF dikhawatirkan bisa menimbulkan pencemaran udara dan lingkungan jika dibiarkan menumpuk di halaman rumah. Berdasarkan analisis situasi tersebut, tim ProbangDebi UNEJ bersama Bank Sampah Ekoliterasi Dermaku Jenggawah merancang kegiatan yang bertujuan untuk memberikan edukasi tentang teknologi pengolahan limbah cangkang pupa agar memiliki nilai ekonomi. Metode pelaksanaan kegiatan adalah edukasi potensi limbah cangkang pupa BSF dan pelatihan teknologi pengolahan limbah cangkang pupa BSF. Data pre-test dan post-test menunjukkan bahwa terjadi peningkatan pengetahuan pembudidaya maggot di Desa Jenggawah tentang pemanfaatan limbah cangkang pupa BSF menjadi produk yang memiliki nilai tambah. Pengolahan limbah cangkang pupa BSF dapat ditingkatkan kapasitasnya menjadi skala yang lebih besar lagi seiring dengan peningkatan kebutuhan pasar dalam pemanfaatan kitin dan kitosan. Selanjutnya, dibutuhkan pelatihan pemasaran melalui platform e-commerce dan koordinasi lintas sektoral untuk memberikan dukungan atas upaya pengolahan limbah menjadi produk yang bermanfaat bagi kesejahteraan dan perekonomian masyarakat. Kata kunci— Black Soldier Fly, Budidaya Maggot, Cangkang Pupa, Kitin, Kitosan Abstract The process of decomposing organic waste using the Black Soldier Fly (BSF) bioconverter is carried out at the larval stage. BSF becomes adult flies, lay eggs and die, which will leave maggot cultivation media, pupa shells and fly carcasses. Maggot cultivation media is used as compost material, while pupa shells and fly carcasses have not been utilized. Piles of pupa shells and fly carcasses can cause air and environmental pollution. The ProbangDebi UNEJ team and the Dermaku Jenggawah Ecoliteracy Waste Bank designed activities aimed at providing education on pupa shell processing so that it has economic value. The implementation method is education and training on BSF pupa shell processing technology. Pre-test and post-test data show that there has been an increase in the knowledge of maggot cultivators in Jenggawah Village regarding the use of BSF pupa shells into products that have added value. BSF pupa shell processing capacity can be increased to a larger scale in line with increasing market demand for the use of chitin and chitosan. Furthermore, marketing training through e-commerce platforms and cross-sectoral coordination is needed to provide support for efforts to process waste into products that are beneficial for the welfare and economy of the community. Keywords— Black Soldier Fly, Chitin, Chitosan, Maggot Cultivation, Pupa Shell
Early Detection of Microplastic Contamination in Fishes In The Sukamade Shoreline, Meru Betiri National Park Ariyunita, Selvi; Subchan, Wachju; Fitria, Anisa
Jurnal ILMU DASAR Vol 26 No 1 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i1.52791

Abstract

Microplastics (< 5 mm) have the potential to be a threat to organisms. However, the study of microplastic contamination in conservation areas, especially in Indonesia, is still limited. The Sukamade is a conservation area that is potentially contaminated by microplastic. This study aims to detect microplastic contamination in fish caught in the Sukamade shoreline as an early warning of the potential threat to biodiversity. The study was conducted from September to December 2022. The methods used include: 1). Fish sampling, 2). Dissection and removal of the gills and gastrointestinal tract; 3). Microplastic characterization based on sizes, shapes, and colors; 4). Data analysis. This is the first report that 451 microplastic particles were detected in four fish caught from the Sukamade shoreline: two individuals of Senangin fish (Eleutheronema sp.), one individual of Lemuru fish (Sardinella sp.), and one individual of Lowang totol fish (Trachinotus sp.). The presence of microplastic in the gastrointestinal tract of fishes shows the possibility of microplastic translocation in tissue and another tropic level, causing health problems in organisms and the community as a constituent of biodiversity.
Degradation and Digestion of Polypropylene, Polyethylene, and Styrofoam by Tenebrio molitor L. (Coleoptera, Tenebrionoidae) Larvae Subchan, Wachju; Rohman, Abdu; Prihatin, Jekti; Salma, Fahriyah Ulimatus; Halimah, Rohima Novianti; Jannah, Alifia Wardhatul; Rosita, Risa
Makara Journal of Science Vol. 28, No. 4
Publisher : UI Scholars Hub

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

Abstract

The increasing use of disposable plastic bags is affecting environmental problems because it requires thousands of years to degrade naturally. To overcome these problems, mealworms (larvae of Tenebrio molitor L.) become an alter-native solution. They can be considered as biodegradation agents of plastic because of the presence of symbiont bacte-ria in its gut that secretes plastic-depolymerizing enzymes. Therefore, this study aimed to compare the degradation and digestion ability of T. molitor in consuming various plastic types and thickness. Two designs have also been used: first, comparing the degradation and digestion of various plastic types, and second, comparing the degradation and diges-tion of various plastic bag thicknesses. The first design consists of three types of treatments, and the control group comprised three repetitions. The control group was fed with concentrate; treatment group 1 (P1), PP plastic bags; treat-ment group 2 (P2), high-density polyethylene (HDPE) plastic bags; and treatment group 3 (P3), styrofoam. The second design encompasses two treatment types, and the control group composed of repetitions. The control group was fed with concentrate; treatment group 1 (P1), HDPE plastic bags with a thickness 0.01 mm; and treatment group 2 (P2), HDPE plastic bags with a thickness of 0.02 mm. The result indicates that in the first design, the highest degradation and digestion occurred in treatment 3 (styrofoam) with an average of 0.001267 and 0.0063 fragment/individual, respective-ly. The second design the highest degradation occurred at P1 of 0.000009609 mg/day/individual. The highest digestion occurred at P1 with a total average of 0.004568 fragment/individual.
Temporal resource partitioning of the flight activities of three bee species in East Java: Pembagian sumber daya temporal dari aktivitas terbang tiga spesies lebah di Jawa Timur Shullia, Nurul Insani; Subchan, Wachju; Raffiudin, Rika; Atmowidi, Tri; Priawandiputra, Windra; Ariani, Nunik Sri; Pujiastuti; Dewi, Aisyah Nurlatifah; Sabella, Yurika Nur; Siffahk, Lutmitha Nisaul; Nisa, Weni Khoiru; Novidayanti, Aldea Anisyafera
Jurnal Entomologi Indonesia Vol 21 No 3 (2024): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.3.234

Abstract

The dwarf honey bee Apis florea Fabricius, was successful coexistence with larger bees, Apis cerana Fabricius and Apis dorsata Fabricius in Bangalore, India. However, there is a lack of A. florea foraging behavior that shared the same plant resources with A. cerana and stingless bee Tetragonula laeviceps (Smith) in Indonesia. This study investigated the foraging activities of two honey bee species (A. florea and A. cerana) and the stingless bee T. laeviceps, which live sympatrically and also seek environmental factors that influence the foraging behavior of bees. The flight activity was recorded on the bee farm at Jombang Regency, East Java Province, from 06.00–16.00 hours for three consecutive days. Environmental factors of temperature, humidity, and light intensity in open and close to the nest areas were recorded. This study reported that A. florea started foraging activity at 09.00, while A. cerana and T. laeviceps started to forage earlier, at 06.00 in the morning. Therefore, the foraging activities of bees in East Java, revealed temporal resource partitioning, which confirmed the results of a previous study in Bangalore. The temperature and humidity mainly influenced the foraging activity of the three bee species (P<0,001). Temporal resource partitioning in A. florea suggests a foraging strategy that coexists with sympatric honeybees and stingless bees. The high flight activity of A. florea at midday suggests that this species can adapt to high temperatures. This result implies that A. florea could be a potential future pollinator in tropical regions facing the issue of a warming climate.
Pengaruh Perbedaan Proporsi Sampah Polystyrene Paper (PSP) terhadap Pertumbuhan dan Kesintasan Larva Kumbang Hitam (Zophobas morio Fab.) Subchan, Wachju; Susilo, Vendi Eko; Wijaya, Rafael Wahyu
Jurnal Teknologi Lingkungan Vol. 25 No. 2 (2024)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2024.830

Abstract

Plastic pollution is a global problem that is urgent to be solved immediately. Meanwhile, the increase in world population has resulted in an increase in plastic waste. One type of plastic that is widely used by people is polystyrene paper (PSP). Darkling beetle larvae (Zophobas morio Fab.) are known to be able to degrade polystyrene. This study aims to determine the effect of the proportion of Polystyrene Paper (PSP) on of Z. morio larvae’s growth and survival rate as well as PSP degradation rate by Z. morio larvae. The research was conducted at Center for Development of Advanced Science and Technology, University of Jember, Indonesia. The Z. morio larvae used had a body length of 3 - 4 cm and a body biomass of 0,17 - 0,27 g. The study used a completely randomized design (CRD) for 4 weeks. Parameters measured included body length growth, wet and dry biomass growth, survival rate, and PSP degradation rate. The results showed that the proportion of PSP had a significant effect on the larvae growth and PSP degradation rate by Z. morio larvae. The lower the proportion of PSP waste, the higher the growth of Z. morio larvae. However, the difference in the proportion of PSP waste had no significantly effect on the survival rate of Z. morio larvae. The highest proportion responding to PSP waste degradation occurred in P4 (10% concentrate + 80% PSP + 10% chayote) was 1.492 mg/g-larvae/week.   ABSTRAK Pencemaran plastik merupakan salah satu permasalahan global yang urgen untuk segera diatasi. Sementara, pertumbuhan penduduk dunia yang terus meningkat memberikan konsekuensi kecenderungan peningkatan sampah plastik. Dari berbagai jenis plastik, Polystyrene Paper (PSP) merupakan salah satu jenis plastik yang sering digunakan masyarakat. Larva Kumbang Hitam (Zophobas morio Fab.) diketahui mampu mendegradasi polystyrene (PS). Penelitian ini bertujuan untuk mengetahui pengaruh proposi sampah PSP terhadap pertumbuhan dan kesintasan larva Zophobas morio Fab. (Z. morio) serta tingkat degradasi sampah PSP oleh larva Z. morio. Penelitian dilaksanakan di Gedung Laboratorium Terpadu dan Sentra Inovasi Teknologi (LTSIT) Universitas Jember, Indonesia. Larva Z. morio yang digunakan berukuran panjang tubuh 3 - 4 cm dan biomassa tubuh 0,17 - 0,27 g. Penelitian menggunakan Rancangan Acak Lengkap (RAL) selama 4 minggu. Parameter yang diukur antara lain pertumbuhan panjang tubuh, pertumbuhan biomassa basah tubuh, pertumbuhan biomassa kering tubuh, kesintasan larva, dan tingkat degradasi sampah PSP. Pengambilan data parameter penelitian dilakukan setiap tujuh hari sekali. Hasil penelitian menunjukkan bahwa proporsi sampah PSP berpengaruh signifikan terhadap pertumbuhan larva dan tingkat degradasi sampah PSP oleh larva Z. morio. Semakin rendah proporsi sampah PSP, maka semakin tinggi pertumbuhan larva Z. morio. Namun, perbedaan proporsi sampah PSP berpengaruh tidak signifikan terhadap kesintasan larva Z. morio. Proporsi yang memberikan respons terjadinya degradasi sampah PSP tertinggi terjadi pada P4 (10% konsentrat + 80% PSP + 10% labu siam) sebesar 1,492 mg/g-larva/minggu.
Development of multiple-representation based E-LKPD to improve students' scientific reasoning in classification of living things Mahardika, I Ketut; Subchan, Wachju; Rosida, Rina Fatiya
JPBIO (Jurnal Pendidikan Biologi) Vol 9, No 2 (2024): November 2024
Publisher : STKIP Persada Khatulistiwa Sintang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31932/jpbio.v9i2.3770

Abstract

Scientific reasoning is a 21st-century skill that needs to be trained to prepare students to face the challenges of globalization. This can be supported by developing e-LKPD (electronic student worksheets) based on multiple representations. This research aims to determine the validity, practicality, and effectiveness of e-LKPD. This type of research is development research that applies the ADDIE model. The validation results by three experts had an average score of 81.66, 86.4, and 85.33 with a very valid category. Practical results were obtained based on student response questionnaires and observations of learning implementation. On a small scale at SMPN 2 Tanggul it was 78 (practical) and observation results were 87.11 (very practical), while on a class scale at SMPN 1 Wonosari, the student response questionnaire score was 81.28 (very practical) and observation results were 84.10 (very practical) practical), SMPN 1 Arjasa with a questionnaire response was 78.9 (practical) and observation results were 86.12 (very practical), MTsN 3 Banyuwangi was 87.72 (very practical) and observation results were 89.23 (very practical).
ANALISIS POTENSI LOKAL CABAI HIYUNG SEBAGAI BAHAN AJAR IPA PADA KONTEN PERTUMBUHAN DAN PERKEMBANGAN TUMBUHAN Hidayah, Yulianti; Mahardika, I Ketut; Supeno, Supeno; Subchan, Wachju
Jurnal Review Pendidikan dan Pengajaran Vol. 6 No. 4 (2023): Volume 6 No 4 Tahun 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v6i4.23712

Abstract

Kalimantan Selatan merupakan salah satu Provinsi di Indonesia yang memiliki potensi lokal dalam budidaya cabai rawit yaitu cabai hiyung. Kearifan lokal merupakan suatu pengetahuan yang diperoleh dari pengalaman sebelumnya berdasarkan lingkungan sekitar yang dapat dimanfaatkan untuk penyelesaian masalah dan pemenuhan kebutuhan sehari-hari. Salah satu bentuk potensi lokal yang ada di Kabupaten Tapin Kalimantan Selatan yaitu cabai hiyung. Dengan cabai hiyung tersebut dapat diimplementasikan pada pembelajaran IPA yaitu Mata Kuliah Fisiologi Tumbuhan dan Perkembangan Penelitian ini betujuan untuk menganalisis potensi lokal cabai hiyung dalam pembelajaran IPA terhadap aspek tehnis budidaya dan aspek parameter lingkungan. Jenis penelitian yang dilakukan yaitu penelitian lapangan dengan menggunakan metode observasi. Berdasarkan hasil penelitian ini menunjukkan bahwa potensi lokal cabai hiyung memiliki pengetahuan lokal (indigeneous science) dari aspek budidaya dan aspek parameter lingkungan yang memuat konsep IPA sehingga diharapkan Dosen dapat menggunakan konteks budaya lokal dalam proses pembelajaran IPA.
Peningkatan Literasi Lingkungan Kelompok Dasawisma melalui Edukasi Pengolahan Sampah Domestik Ariyunita, Selvi; Mudakir, Imam; Subchan, Wachju
Alamtana: Jurnal Pengabdian Masyarakat UNW Mataram Vol 7 No 1 (2026): Edisi Mei 2026
Publisher : LPPM UNIVERSITAS NAHDLATUL WATHAN MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jaltn.v7i1.2742

Abstract

Kelompok Dasawisma Mawar Desa Balung Lor Kecamatan Balung, Kabupaten Jember beranggotakan ibu-ibu non produktif. Permasalahan yang dihadapi mitra meliputi (i) kegiatan di Dasawiswa Mawar hanya berbentuk arisan, tidak pernah diisi dengan kegiatan yang meningkatkan pemberdayaan anggota, (ii) Belum dilakukan pengolahan sampah di skala rumah tangga. Pengolahan sampah domestik warga masih dilakukan dengan mengumpulkan sampah sementara untuk diambil oleh petugas kebersihan, namun sebagian besar masih memiliki kebiasaan membuang sampah ke sungai dan membakar sampah. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan literasi lingkungan mitra, meliputi peningkatan wawasan lingkungan hidup, memberikan pelatihan untuk meningkatkan keterampilan mitra, dan menginisiasi pembiasaan aksi mengelola sampah mandiri di skala rumah tangga sebagai bentuk tanggung jawab terhadap lingkungan. Metode yang digunakan meliputi (i) tahap persiapan berupa koordinasi dengan mitra dan observasi lingkungan mitra, (ii) tahap pelaksanaan terdiri dari pemberian materi persampahan dan praktek pengolahan sampah domestik, dan (iii) monitoring dan evaluasi untuk menentukan ketercapaian kegiatan. Kegiatan telah dilaksanakan pada bulan Agustus-Oktober 2022. Peserta kegiatan adalah anggota Dasawisma Mawar berjumlah 35 orang. Praktek pengolahan sampah domestik yang dilakukan meliputi, pengolahan sampah sisa kulit bawang menjadi fertilizer, limbah minnyak jelantah menjadi lilin aromaterapi dan sabun, sampah masker menjadi pot bunga sukulen, plastik bekas menjadi planterbag, Hasil analisis deskriptif dari kuesioner yang dikumpulkan menujukkan bahwa keseluruhan peserta kegiatan merasanakan kebermanfaatan kegiatan ini, mengetahui implementasi 3R (reduce, reuse, recycle) dan mendapatkan pelatihan tentang pengolahan sampah domestik. Kegiatan ini diharapkan menjadi inisiasi pembiasaan pengelolaan sampah mandiri di skala rumah tangga sehingga berkontribusi menurunkan timbulan sampah di lingkungan.
Inundation Risk Level Tsunami in Trenggalek District, Indonesia Basid, Abdul; Mahardika, I Ketut; Subchan, Wachju; Astutik, Sri; Rusli, Rusli; Jannah, S.D.N.; Rozikan, Rozikan
Indonesian Journal on Geoscience Vol. 13 No. 1 (2026)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.13.1.31-42

Abstract

The southern coast of Trenggalek District is prone to tsunami disasters, because it is located north of the megathrust zone. This study aims to map the level of tsunami inundation risk in The Trenggalek District, especially of the coast of Watulimo Subdistrict. This mapping was done with the help of Model Builder in ArcGIS software, using scenarios of tsunami wave heights on the shore of 1 m, 2 m, 5 m, 15 m, 27 m, and 30 m. The risk map of tsunami inundation was obtained by combining the tsunami hazard map with the vulnerability map. The study results show that the area of tsunami inundation at a high-altitude scenario with wave heights of 1 m has low, medium, and high-risk levels covering 0.254 km², 0.240 km², and 0.032 km², respectively. In the 27 m scenario, which is the worst-case scenario according to Meteorology, Climatology, and Geophysics Agency (BMKG), the areas of inundation at low, medium, and high-risk levels reach 23.032 km², 16.471 km², and 7.904 km², respectively. In this 27 m scenario, four villages in Watulimo Subdistrict are almost entirely inundated by the tsunami. The results of this study are expected to be used as the material for tsunami disaster mitigation in the Trenggalek District.
Co-Authors Abda Abda Abdul Basid Ariani, Nunik Sri Azzahra, Syarafina Banun Kusumawardani Bevo Wahono D Devan Dewi, Aisyah Nurlatifah Dwi Retno Risthy Zulifah Dwi Wahyuni Fanny Aprilia Purnama Reta Halimah, Rohima Novianti HARIYANTO HARIYANTO Hidayah, Yulianti I Ketut Mahardika Iis Nur Asyiah Imam Mudakir Indra Sahfriana, Indra Ita Ratiyani Jannah, Alifia Wardhatul Jannah, S.D.N. Jekti Prihatin K Kedawung Lusiana Herman, Lusiana Maghfiroh, Lailiyah Mahfud, Mohamad Zaenal Mardiatul Hasanah Mazwin Mukaromah Mochammad Iqbal Musyarofah, Alivinda Nisa, Weni Khoiru Niwanggalih, Puspita Novidayanti, Aldea Anisyafera Nuri, Siti Anisa Nurul Insani Shullia P Pujiastuti Parawita Dewanti Pujiastuti R. Rusli Rejeki, Tutik Sri RIKA RAFFIUDIN Rivandinia Imanita Haq Rohman, Abdu Rosida, Rina Fatiya ROSITA, Risa Rozikan, Rozikan Rudi Joelijanto S Suratno Sabella, Yurika Nur Salma, Fahriyah Ulimatus Selvi Ariyunita Siffahk, Lutmitha Nisaul Slamet Hariyadi Sofian, Shelfy Rahma Andi SRI ASTUTIK Sri Wahyuni Sudarmadji Sudarmadji Sudarti Sudarti Supeno Susilo, Vendi Tri Atmowidi TRI HANDOYO Vendi Eko Susilo, Vendi Eko Wendra Syehrofi Widya Resti Susanti Wijaya, Rafael Wahyu Winda Anista, Winda WINDRA PRIAWANDIPUTRA, WINDRA Yani Corvianindya Rahayu