eprintid: 1119 rev_number: 7 eprint_status: archive userid: 2 dir: disk0/00/00/11/19 datestamp: 2024-12-16 15:42:30 lastmod: 2024-12-16 15:42:30 status_changed: 2024-12-16 15:42:30 type: article metadata_visibility: show creators_name: Widiyastuti, T. creators_name: Rahayu, S. creators_name: Suryapratama, W. creators_name: Suhartati, F.M. title: NUTRIENT PROFILE, PROTEASE AND CELLULASE ACTIVITIES OF PROTEIN EXTRACTED FROM BLACK SOLDIER FLY (Hermetia illucens) LARVAE REARED ON VARIOUS SUBSTRATES ispublished: pub subjects: SF divisions: j11 full_text_status: public keywords: Amino acid; Chemical profile; Enzymes; Fatty acid; Maggot note: Faculty of Animal Science, University of Jenderal Soedirman, Jl. Dr. Soeparno, Karangwangkal, Purwokerto, Indonesia abstract: The Black Soldier Fly (BSF; Hermetia illucens) larvae are recognized for their ability to convert diverse organic materials into protein-rich biomass, depending on the substrate they consume. The composition of these substrates can significantly impact the nutrient profile and enzyme activities of the resulting maggot protein extract (MPE). Therefore, this exploratory research aimed to assess the nutrient content, protease, and cellulase activity of MPE obtained from BSF maggots reared on different substrates, with a specific focus on substrates A (comprising restaurant waste and rejected milk), B (layer manure), and C (kitchen waste). The results showed that maggot meal from layer manure had the highest protein content (45.36) and the lowest fat content (18.44). Amino acids in maggot meal contained high levels of glutamic acid, aspartic acid, alanine, valine, leucine, and isoleucine. Lauric acids were found in maggot meal from kitchen waste (33.79), layer manure (32.18), and restaurant waste and rejected milk (22.94). Maggot meal from layer manure had the highest oleic acid content (15.13). The protein concentration of MPE from various substrates ranged from 0.56 to 0.601 mg/ml (at 60 w/v ammonium sulfate saturation) and 0.555 to 0.609 mg/ml (at 70 ammonium sulfate saturation). The protease activity of MPE from layer manure substrates exhibited optimum activity and stability in neutral to alkaline pH, with activity levels of 0.748 U/mg at pH 7.0 and pH 11.0 (at 60 w/v ammonium sulfate saturation) and 0.774 units/mg at 70 w/v ammonium sulfate saturation. The highest cellulase activity was found in MPE from kitchen waste, which remained stable at pH 5.0–11.0. In general, maggots from different substrate sources exhibited distinct nutrient profiles and enzyme activities. Protein extract from maggots grown in layer manure showed the most suitable nutrient profile for use as an alternative source of protein feed and protease enzymes. © (2024), (Scienceline Publication). All rights reserved. date: 2024-09-30 publication: Online Journal of Animal and Feed Research volume: 14 number: 5 publisher: Scienceline Publication, Ltd pagerange: 309-320 id_number: 10.51227/OJAFR.2024.36 refereed: TRUE issn: 2228-7701 official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85208467905&doi=10.51227%2fOJAFR.2024.36&partnerID=40&md5=166c6745d75eab727ed8b6ece183fb67 j_index: scopus citation: (2024) NUTRIENT PROFILE, PROTEASE AND CELLULASE ACTIVITIES OF PROTEIN EXTRACTED FROM BLACK SOLDIER FLY (Hermetia illucens) LARVAE REARED ON VARIOUS SUBSTRATES. Online Journal of Animal and Feed Research. pp. 309-320. ISSN 2228-7701 document_url: http://eprints.science-line.com/id/eprint/1119/1/OJAFR14%285%29309-320%2C2024.pdf