The Effect of feeding quantity on coffee (Coffea arabica L) waste bioconversion rate by Black Soldier Fly (Hermeutia illucens) larvae

• Main Author: Haris Abdulloh - Nim: 11413043, Muhammad
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23249
• Institution: Institut Teknologi Bandung

As the second most frequently consumed beverage in Indonesia, coffee production in the country/indonesia is very high. The high level of production resulted in high amount of waste. More process is needed to utilize the coffee waste and increase its value. Bioconversion agent can be used to increase the waste value through bioconversion process. The goal of this research is - to determine the effect of coffee waste feeding rate on bioconversion process by bsf larvae with Efficiency of Conversion of Digested-feed (ECD), Approximate Digestibility (AD), larvae growth rate and Waste Reduction index (WRI) as parameters. The material in research was coffee waste as substrate growth media of larvae with pre-treatment larvae was given papaya fruit as starter until sixth day. The treatments that used in this research was a variation in feeding rate 12,5; 25; 50; 100 dan 200 mg/larvae/day. The composition of feed was water and coffee waste (60:40). Two hundreds of larvae was used in each treatments and repetition. Dry and fresh weight of larvae and the feed residue was measured every 3-4 days and stopped if the 50% of larvae turned into prepupae. Sample of larvae and the feed residue was dried for at least 24 hour at 1050C to determine dry mass. The result shown that variation in feeding rate has an effect on coffee waste bioconversion rate by bsf larvae. The fastest larvae development time was achieved in 100 mg/larvae/day treatment and 200 mg/larvae/day treatment (28 days), the highest growth rate was achieved in 200 mg/larvae/day treatment (1,23 mg/larvae/days), the highest AD was achieved in 12,5 mg/larvae/day treatment (65,81%), the highest ECD was achieved in 50 mg/larvae/day treatment (11,41%) and the highest WRI was achieved in 50 mg/larvae/day treatment (2,24%).