Abstract:
Organic waste was the potential to contaminate the environment. Hermetia illucens or
black soldier fly larvae (BSFL) were insects that could decompose waste and produce
larvae biomass. It had high efficiency for waste reduction. The kind of substrate could affect
the waste reduction performance of BSFL. This study determined the effect of the kind of
waste on the effectiveness of reducing waste by H. illucens. The larvae were reared on
domestic waste and solid decanter. Each treatment (three replicates per treatment)
contained 300 larvae seven days old with a daily food rate of 125 mg/larva/day. After instar
fourth and fifth old, the larva was harvested using sterile forceps. The ratio of waste
reduction (%WR), efficiency of conversion of digested feed (ECD), bioconversion rate
(BCR), and biomass were calculated in the fourth and fifth instar. The results showed that
larvae on domestic waste had a higher waste reduction performance than larvae on the
solid decanter. The results showed that larvae could reduce domestic waste to 76.5% and
32.6% on the solid decanter. Larva on domestic wasted showed higher ECD, BCR, and
biomass than larvae on the solid decanter. It showed that BSFL had higher waste reduction
performance on domestic waste than on solid decanter. Therefore the kind of waste could
affect the waste reduction performance of BSF larvae.
Keywords: biomass, BSFL, bioconversion rate, ECD, waste reduction
