Bioconversion efficiencies of several food waste by Black Soldier Fly, Hermetia illucens (L.) (Diptera: Stratiomyidae) larvae for sustainable waste management Ucu julita(a*), Lulu Lusianti Fitri(b) and Agus Dana Permana (b)
a) Biology Department, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung, Jl. A.H Nasution No.105 Bandung Indonesia
b) School of Life Sciences and Technology, Institut Teknologi Bandung, Ganesa 10 Bandung 40132 Indonesia
Abstract
Larvae of black soldier fly (BSF) convert organic waste into high value biomass of which the composition may depend on the substrate. In this study, three days old of BSF larvae were grown on several organic wastes to produce fat and protein-rich insect biomass that potential for animal feed. Each treatment contained 100 larvae fed with five different feed (chicken feed, fruits waste, vegetables waste, restaurant waste and tofu dreg). Feeding of larvae was continued until more than 50% of the larvae of each treatment had developed into prepupae. The data of insect growth dynamics and estimation of substrate utilization were assessed. The relative proportion and the absolute amount of food that were converted into biomass, metabolism and residual were calculated. The ability of larva to digest organic waste was measured by Efficiency of Digested Feed (ECD). Overall material reduction level was measured by Waste Reduction Index (WRI). The different of organic waste as larval rearing substrate influenced the ability of BSF larvae in converting waste into nutrient-rich biomass. The difference in rearing substrate affected the life history, larval development time (egg to prepupa, in days), dry weight of prepupa (biomass), feeding time, substrate consumption and survival rate. The data provide the difference of bioconversion efficiency among five organic waste by BSF. Reported data can be used for understanding the suitable substrate for rearing BSF and produce high nutrition prepupae for animal feed and to improve the strategy of organic waste management.
Keywords: Black soldier fly, bioconversion, WRI, ECD
Topic: Symposium on Energy and Environmental Science and Engineering
