“…Fifteen articles reported on rearing substrates that contained fruit and vegetable ingredients [ 19 , 20 , 21 , 23 , 25 , 29 , 30 , 31 , 32 , 33 , 35 , 36 , 37 , 38 , 39 ]. Six articles reported on rearing substrates that contained animal-based ingredients [ 24 , 25 , 28 , 39 , 40 , 41 ], four articles reported on rearing substrates that contained a generic food or kitchen waste description, with no further details regarding included ingredients [ 24 , 38 , 39 , 41 ], and one article reported on a rearing substrate that contained seaweed as an ingredient [ 26 ].…”