Maduri Nur Balhis, 4411418038 (2022) BIOKONVERSI LIMBAH ROTI APKIR DAN AMPAS TAHU DENGAN MEMANFAATKAN LARVA Hermetia illucens. Under Graduates thesis, Universitas Negeri Semarang.

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Abstract

Bioconversion is the process of converting organic matter into valuable products by involving living organisms. The bioconversion process can be used to turn expired bread and tofu waste into feed for H. illucens larvae. H. illucens larvae are known to be rich in protein content that can be used as an alternative protein. This study aims to analyze the results of giving expired bread and tofu dregs to weight, survival rate, waste reduction index, and nutrition of H. illucens larvae. This study used an experimental method using a Rancangan Acak Lengkap (RAL) technique with four treatments and five replications. The organic waste used as feed media for H. illucens larvae were 100% expired bread (control), 10% expired bread 90% tofu dregs, 20% expired bread 80% tofu dregs, 30% expired bread 70% tofu dregs for each treatment using 1333 (3.06 g) test animals obtained from TPST UNNES. The results showed H. illucens larvae fed 30% expired bread 70% tofu dregs gave the best results on average larval weight (0.21 g), survival rate (96.5%), and waste reduction index (6, 13%/day). The results of the proximate analysis of H. illucens larvae showed the highest protein and ash content in the feed with a high concentration of tofu waste (90% tofu waste) which were 43.14% and 7.71%, the highest fat content was found in larvae with 100% expired bread feed, which was of 44.64%, while the highest water content and ash content were found in the treatment of 20% expired bread 80% tofu dregs which was 6.8%.

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