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All Journal Jurnal Biolokus: Jurnal Penelitian Pendidikan Biologi dan Biologi Jurnal Teknologi Lingkungan UNMUL
Saibun Sitorus
Mulawarman University
Agriculture, Biological Sciences & Forestry Education Engineering Environmental Science Other

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Comparative study of maggot (Hermetia illucens) oil extraction using mechanical pressing and soxhlet methods: Physicochemical characteristics Yuni Marsella; RR Dirgarini Julia Nurlianti Subagyono; Chairul Saleh; Rudy Agung Nugroho; Saibun Sitorus; Teguh Wirawan; Aman Sentosa Panggabean
Jurnal Biolokus : Jurnal Penelitian Pendidikan Biologi dan Biologi Vol 9, No 1 (2026): June
Publisher : Universitas Islam Negeri Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/biolokus.v9i1.5737

Abstract

Larvae of Hermetia illucens have been increasingly recognized as a promising renewable lipid feedstock for various industrial, oleochemical, and biotechnological applications. This study compared mechanical pressing and Soxhlet extraction methods to evaluate their effects on the physicochemical properties and lipid composition of maggot oil. Oil extracted by the Soxhlet method resulted in a higher yield (34.60%) than mechanical pressing (22.45%), indicating more efficient lipid recovery. The moisture contents of the oils were 0.643% and 0.468%, respectively. Both extraction methods produced oils with low acid values (1.693 ± 0.127–1.702 ± 0.116 mg KOH/g) and free fatty acid contents (0.603 ± 0.045–0.607 ± 0.042 %), suggesting acceptable oil quality. Saponification values ranged from 157 to 159 mg KOH/g, while peroxide values were 13.56–14.49 meq O₂/kg. The elemental composition results revealed that both oils were predominantly composed of carbon and hydrogen, reflecting their lipid-rich nature. Gas chromatography–mass spectrometry analysis revealed that the extraction method significantly influenced lipid composition. Mechanical pressing preserved a higher proportion of triglycerides, whereas Soxhlet extraction recovered larger amounts of free fatty acids, especially those with medium- and long-chain structures. These findings indicate that extraction techniques not only affect oil yield but also influence the physicochemical characteristics and chemical profile of H. illucens oil, which may influence its suitability for different biological and biotechnological applications. The results demonstrate that selecting a suitable extraction method is crucial for producing maggot oil with characteristics tailored to specific downstream applications, including biofuel, oleochemical, and biotechnological products.
EVALUASI PENGELOLAAN PENGUMPULAN DAN PENGANGKUTAN LIMBAH BAHAN BERBAHAYA DAN BERACUN DI PT KARUNIA LUMASINDO PRATAMA SAMARINDA Yolanda Prahitna Trisna Della; Amir Masruhim; Saibun Sitorus; Ndan Imang; Henny Pagoray; Jawatir Pardosi
Jurnal Teknologi Lingkungan UNMUL Vol. 10 No. 1 (2026): Jurnal Teknologi Lingkungan UNMUL
Publisher : Mulawarman University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jtlunmul.v10i1.28228

Abstract

Peningkatan sektor industri dan fasilitas kesehatan di Kalimantan Timur mendorong meningkatnya produksi Limbah Bahan Berbahaya dan Beracun (B3) yang berpotensi mencemari lingkungan. Penelitian ini bertujuan mengevaluasi sistem pengangkutan dan pengumpulan limbah B3 di PT Karunia Lumasindo Pratama (PT KLP) melalui identifikasi proses operasional, kuantitas dan klasifikasi limbah, serta analisis tingkat ketaatan terhadap regulasi pemerintah dan dampak lingkungan yang ditimbulkan. Menggunakan pendekatan kualitatif deskriptif melalui observasi lapangan menggunakan checklist regulasi, data operasional dan wawancara mendalam terstruktur terhadap staf PT KLP. Hasil penelitian menunjukkan ada 38 jenis limbah B3 dengan total volume 11.966,854 ton/tahun pada periode 2025, didominasi oli bekas sebesar 8.718,688 ton/tahun. Volume ini meningkat 53,87% dibanding tahun 2023. Tingkat kepatuhan terhadap regulasi mencapai 86,6% dari 15 parameter uji, dengan ketidaksesuaian pada penggunaan manifest elektronik Festronik di wilayah blank spot internet serta aktivitas operasional malam hari yang tidak sesuai SOP. Pemantauan lingkungan mencakup air tanah, udara ambien dengan nilai TSP 61,69 µg/Nm³ dari baku mutu 230 µg/Nm³, serta kebisingan 66,5 dB(A) dari baku mutu 70 dB(A), seluruhnya memenuhi ketentuan. PT KLP telah memiliki legalitas operasional dan dokumen UKL-UPL yang sah, tetapi masih memerlukan penguatan pada aspek pengawasan operasional, administrasi digital  dan transparansi pengelolaan guna mencegah risiko kegagalan lingkungan di masa mendatang.
Co-Authors Aman Sentosa Panggabean Amir Masruhim Chairul Saleh Henny Pagoray Jawatir Pardosi Ndan Imang RR Dirgarini Julia Nurlianti Subagyono Rudy Agung Nugroho Teguh Wirawan Yolanda Prahitna Trisna Della Yuni Marsella