Table 1.
Composition of Single cell protein (SCP) from the different sources in % of dry weight.
| Component | Microalgae | Fungi | Bacteria | PPB |
|---|---|---|---|---|
| Total nitrogen (Protein + nucleic acids) | 45–65a | 35–50a | 60–80a | 60–65a |
| Fats/lipids | 5–10a | 2.6–13a | 8–10a | 0.5–9.9a |
| Carbohydrates | 9.0 | NA | 10 | 21–26a |
| Bile pigment and chlorophyll | 6.0 | NA | NA | 1.7–2.8 |
| Nucleic acids | 4.0–6.0a | 3.9–9.7a | 15–16a | 4.3–5.9a |
| Mineral salts | 7.0 | 6.6 | 8.6 | NA |
| Amino acids | NA | 54 | 65 | 38.6b |
| Energy content (MJ kdDS-1)c | 10.9–16.1 | 7.7–14.1 | 14.7–18.8 | 13.7–18.9 |
Table adopted from (Anupama and Ravindra, 2000). Additional sources: (Shipman et al., 1975; Ivarson and Morita, 1982; Blankenship et al., 1995; Ponsano et al., 2004; Gao et al., 2007), NA- Not available, adepends on the substrate, bonly specific amino acids, calculated based on 16.7, 16.7, and 37.7 MJ kg-1 for carbohydrates, proteins and fats as per (Angelidaki and Sanders, 2004).