Table 1.
Effect of aw, temperature and type of coffee extract medium on ochratoxin A (OTA) production (ng g−1) by the four strains of A. westerdijkiae examined.
| Temperature (°C) | 25 | 30 | 35 | ||||
|---|---|---|---|---|---|---|---|
| Strains/Medium/aw | GCEA | RCEA | GCEA | RCEA | GCEA | RCEA | |
| A. westerdijkiae (2A3) | 0.99 | ND | ND | ND | ND | ND | ND |
| 0.98 | 4.1 + 1.1. | <LOQ | 8.3 + 3.9 | <LOQ | 10.3 | ND | |
| 0.95 | 8.7 + 0.9 | 2.6 + 0.2 | <LOQ | <LOQ | 46.4 | ND | |
| 0.90 | ND | <LOQ | ND | ND | ND | ND | |
| A. westerdijkiae (C1/1) | 0.99 | <LOQ | ND | ND | ND | ND | ND |
| 0.98 | <LOQ | <LOQ | 48.3 + 13.8 | ND | 9.7 | ND | |
| 0.95 | 32.4 + 0.4 | <LOQ | ND | ND | ND | ND | |
| 0.90 | ND | <LOQ | ND | ND | ND | ND | |
| A. westerdijkiae (B 2) | 0.99 | ND | ND | 40.3 + 5.1 | ND | ND | ND |
| 0.98 | 9.4 + 5.2 | <LOQ | 1802.8 + 416 | ND | 5206.3 + 433 | ND | |
| 0.95 | 3.7 + 0.2 | <LOQ | 3.2 + 0.4 | <LOQ | 28.1 + 1.1 | <LOQ | |
| 0.90 | ND | ND | <LOQ | ND | <LOQ | ND | |
| A. westerdijkiae (CBS 121986) | 0.99 | <LOQ | ND | <LOQ | <LOQ | ND | ND |
| 0.98 | <LOQ | <LOQ | 280.4 + 17.2 | ND | 64.3 + 15.8 | ND | |
| 0.95 | 30.6 + 6.2 | <LOQ | 5.4 + 3.0 | ND | 52.81 | ND | |
| 0.90 | ND | <LOQ | <LOQ | ND | ND | ND | |
Key: GCEA, green coffee extract agar; RCEA, roasted coffee extract agar; <LOQ, below Limit of Quantification; ND, no toxin detected.