Judul: Karakteristik Biokonversi Limbah Pangan Kampus IPB Darmaga Menggunakan Larva Black Soldier Fly (BSF)
Abstrak: Manajemen limbah pangan di Kampus IPB perlu ditingkatkan dengan memanfaatkan larva Black Soldier Fly (BSF). Penelitian ini bertujuan memperoleh karakteristik biokonversi limbah pangan. Metode pada penelitian ini mencakup pengumpulan sampel limbah pangan, pengujian kadar air limbah pangan, pengukuran suhu dan kelembapan relatif insektarium, perhitungan karakteristik biokonversi, pengujian kadar lemak dan protein BSF, penentuan neraca massa larva BSF segar, serta pengujian mutu kompos. Hasil penelitian menunjukkan bahwa rata-rata kadar air limbah pangan 60-67%, persen reduksi limbah sebesar 62-63%, waste reduction index (WRI) sebesar 4,4-4,5%/hari, fresh matter consumption rate (FMCR) sebesar 20-25 mg/larva/hari, dry matter consumption rate (DMCR) sebesar 13-16 mg/larva/hari, dry matter reduction (DMR) sebesar 61-66% dan efficiency of conversion of digested feed (ECD) sebesar 38-48%. Kadar protein dan lemak larva BSF yang dipanen pada hari ke-14 sebesar 32,5-36,4% dan 29,3-29,6%. Neraca massa larva segar hasil biokonversi dengan input berupa 0,5 gram telur BSF dan 1 kg limbah menghasilkan larva segar berumur 14 hari sebanyak 178-271 gram. Berdasarkan penelitian ini, larva BSF efektif mereduksi limbah pangan dan menghasilkan produk sampingan berupa kompos., Improvement of food waste management in IPB University is needed by utilizing Black Soldier Fly Larvae (BSFL). This research aims to obtain the bioconversion characteristics of food waste. The research includes collecting food waste samples, testing the water content of food waste, and measuring the temperature and relative humidity of the insectarium. It also covers calculating bioconversion characteristics, testing BSF fat and protein content, determining the mass balance of fresh BSFL, and testing compost quality. The analysis results show that the average food waste water content was 60-67%, thr food waste reduction was 62-63%, the waste reduction index (WRI) 4.4-4.5%/day, and the fresh matter consumption rate (FMCR) 20-25 mg/larvae/day. It also indicates that dry matter consumption rate (DMCR) 13-16 mg/larvae/day, dry matter reduction (DMR) 61- 66%, and efficiency of conversion of digested feed (ECD) 38-48%. The protein and fat content of BSFL harvested on the 14th day were 32.5-36.4% and 29.3-29.6%. Mass balance of fresh larvae with 0.5 grams of BSF egg and 1 kg of waste produces 178-271 grams of fresh larvae. Based on this research, BSFL effectively reduces food waste and produces 14-days compost.
Keyword: bioconversion, black soldier fly, food waste, green campus

Judul: Biokonversi Limbah Organik Pasar Agrobis Magetan Menjadi Protein Pakan Ternak Menggunakan Larva Black Soldier Fly
Abstrak: Salah satu pengolahan limbah organik yang ramah lingkungan adalah biokonversi limbah organik menggunakan larva black soldier fly (BSF). Penelitian ini bertujuan menganalisis karakteristik dekomposisi limbah organik Pasar Agrobis dengan larva BSF, serta mengaplikasikan dan mengkaji mutu pakan pengolahan larva BSF sebagai alternatif substitusi protein bagi pakan ternak. Penelitian dilaksanakan pada Maret-April 2022 di Kabupaten Magetan, Jawa Timur. Karakteristik dekomposisi limbah padat organik menggunakan larva BSF diidentifikasi dengan waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), dan dry matter consumption rate (DMCR). Nilai WRI dan FMCR untuk limbah organik Pasar Agrobis selama 15 hari, yaitu 3,2%/hari dan 32,1 mg/larva/hari. Nilai persen DMR sebesar 84,4% dan nilai DMCR sebesar 27,1 mg/larva/hari. Aplikasi larva BSF sebagai substitusi protein pakan memenuhi persyaratan mutu pakan berdasarkan SNI 8173:2015, kecuali lemak kasar dan serat kasar. Pertambahan bobot ayam broiler umur 8-21 hari (starter) dan 21 hari ke atas (finisher) selama 12 hari berbeda nyata terhadap pakan komersial (p>0,05) dengan nilai rasio konversi pakan (RKP) lebih rendah., One of the environmentally friendly organic waste treatments is the bioconversion of organic waste using black soldier fly (BSF) larvae. This study aims to analyze the decomposition characteristics of organic waste in the Agrobis Market with BSF larvae, apply, and examine the quality of animal feed from BSF larvae as an alternative to protein substitution. The study was conducted in March-April 2022 in Magetan Regency, East Java. Characteristics of the decomposition of organic waste using BSF larvae were identified with waste reduction index (WRI), fresh matter consumption rate (FMCR), dry matter reduction (DMR), and dry matter consumption rate (DMCR). The value of WRI and FMCR organic waste for 15 days were 3,2%/day and 32,1 mg/larva/day. The percent DMR was 84,4% and DMCR was 27,1 mg/larva/day. The application of BSF larvae as protein substitution meets the animal feed quality based on SNI 8173:2015, except for crude lipid and fiber. The growth gain of broiler aged 8-21 days (starter) and above 21 days (finisher) for 12 days obtained significantly different against commercial feed (p>0.05) with a lower food convertion ratio (FCR) value.
Keyword: Agrobis Market, bioconversion, black soldier fly, broiler

Judul: Penerapan Metode Carathéodory untuk Menentukan Solusi Periodik Persamaan Diferensial Takotonom Orde Dua
Abstrak: Persamaan diferensial takotonom merupakan persamaan diferensial yang secara eksplisit memuat variabel bebas. Persamaan diferensial ini jika diberikan kondisi batas periodik akan menghasilkan suatu solusi periodik. Pada karya ilmiah ini akan dipelajari penggunaan metode Carathéodory untuk mencari solusi periodik dari persamaan diferensial takotonom orde dua yang memiliki syarat batas periodik. Berdasarkan penggunaan metode Carathéodory didapatkan hasil bahwa solusi periodik persamaan diferensial takotonom orde dua adalah solusi dari minimizer persamaan variasional. Untuk menggambarkan solusi periodik dari persamaan diferensial takotonom orde dua digunakan bantuan software Mathematica 6.
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