Table 4.
Microbial contamination [Log10 (N) (CFU/g)] reported for different insects.
| Insect | Microorganism concentration [Log10(N) CFU/g] | References | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Total mesophillic aerobes | Total aerobic spores | Enterobacteriaceae | Lactic acid bacteria (LAB) | Salmonella spp. | Listeria monocytogenes | Yeast and molds | Bacillus cereus | ||
| Black soldier fly (Hermetia illucens) | 7.19 | – | 6.06 | – | – | ND | – | – | (108) |
| 5.28 | – | 4.29 | – | 4.04 | ND | 5.19 | – | (109) | |
| Mealworm (Tenebrio molitor) | 2.5–5.6 | 2.2–7 | – | – | – | – | – | 2–4.7 | (110) |
| 8.5–8.2 | 3–3.7 | 7.1–6.1 | 8.2–7.7 | ND | ND | – | – | (111) | |
| 7.7–8.3 | 1–3.5 | 6.8–7.6 | 7–7.6 | – | – | 5.2–5.7 | (112) | ||
| 8–9.3 | 1.7–4.2 | 6.9–7.8 | 7.3–8.2 | ND | ND | 4.2–6 | ND | (113) | |
| 7.7 | 2.1 | 6.8 | – | – | – | – | – | (114) | |
| House cricket (Acheta domesticus) | 1.6–8 | 2–8 | – | – | – | – | – | 2–4.7 | (110) |
| 8.1–8.7 | 2.6–4.1 | 7.2–8.0 | 7.4–8.3 | – | – | 5.6–7.2 | (113) | ||
| 4.32 | – | ND | – | – | – | 4.89 | – | (115) | |
| – | – | – | – | (111) | |||||
| 7.49–7.69 | 3.5 | 6.69–7 | – | ND | ND | 5.39 | – | (116) | |
| 7.97 | – | – | – | – | – | 4.80 | – | (117) | |
| 7.2 | 3.6 | 4.20 | – | – | – | – | – | (114) | |
| Grasshopper (Ruspolia differens) | 8.38–9.41 | 3.75–4.87 | 6.89–7.83 | 7.99–9.11 | – | – | 5.77–7.12 | – | (118) |
| Grasshopper (Locusta migratoria migratorioides) | 7.8–8.6 | 3.3–3.8 | 7.6–7.1 | 7.6–8.5 | – | – | 5–5.4 | – | (112) |
ND, not detected.