UTILIZING PALM TRUNK AS BSF’S BREEDING MEDIA

• Main Author: Restiyani T M, Gisella
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/73793
• Institution: Institut Teknologi Bandung

<p align="justify">The Indonesian government's replanting program to increase palm oil productivity has negative impacts on the environment, such as the abundant production of oil palm trunk (OPT) waste. To mitigate these impacts, OPT can be reprocessed. One way is by utilizing it as a suitable medium for breeding black soldier fly (BSF). However, BSF larvae don’t consume cellulose, so fermentation is required using fungi that have the capacity to degrade complex compounds into nutrients. The fungal strains used in the study were AN-PC (Aspergillus niger, Phanerochaete chrysosporium) and AO-PC (Aspergillus oryzae, Phanerochaete chrysosporium). There were variations in the form of OPT with sap (powder, chips) and without sap (chips). Variations in water content of the palm trunks were also tested at ratios of 1:2 and 1:1. The objective of the research was to evaluate the influence of solid-state fermentation conditions on OPT substrates, including fungal types, palm trunk sizes, and water content, on the utilization of OPT as a medium for breeding BSF larvae. After fermentation, protein content was determined using the Bradford method, and the carbon-to-nitrogen (C/N) ratio was measured. The results showed no significant influence of fungal types and OPT forms on mass reduction and protein increase. Water content did not significantly affect mass reduction but had a significant effect on protein increase. The type of substrate also had an impact on the fermentation results for both OPT with and without sap. The best experimental variation was OPT without sap with a water content ratio of 1:1 using the AO-PC fungus. A change in the C/N ratio was observed, with a decrease of 4.32, indicating a reduction in carbon content and an increase in nitrogen content in the substrate. This resulted in an increase in protein content based on the increase in nitrogen content of 10.11%.