Table 6 Total bacterial counts (cfu.g−1) of beef burger affected by anthraquinone pigment (AQP), BHT and γ- irradiation during cold storage (4 ± 1ºC)
Storage Period (day) | Treatments | ||||||
|---|---|---|---|---|---|---|---|
control | Anthraquinone concentration (%) | BHT (200 ppm) | γ- irradiation (kGy) | ||||
0.5 | 1.0 | 2.0 | 3 | 5 | |||
0 | 5.7 × 105 | 5.6 × 105 | 5.5 × 105 | 5.2 × 105 | 5.2 × 105 | 4.8 × 104 | 3.3 × 103 |
3 | 3.3 × 106 | 9.6 × 105 | 8.3 × 105 | 6.1 × 105 | 7.7 × 105 | 8.3 × 104 | 4.5 × 103 |
6 | 8.3 × 106 | 3.7 × 106 | 1.1 × 106 | 8.8 × 105 | 3.5 × 106 | 2.6 × 105 | 8.6 × 103 |
9 | 4.1 × 107 R | 8.4 × 106 | 4.3 × 106 | 2.5 × 106 | 7.7 × 106 | 5.7 × 106 | 2.9 × 104 |
12 |  | 3.5 × 107 R | 7.2 × 106 | 4.4 × 106 | 3.7 × 107 R | 2.3 × 107 R | 7.5 × 104 |
15 |  |  | 2.6 × 107 R | 7.2 × 106 |  |  | 3.4 × 105 |
18 |  |  |  | 1.7 × 107 R |  |  | 1.6 × 106 |
21 |  |  |  |  |  |  | 8.8 × 106 |
24 |  |  |  |  |  |  | 3.7 × 107 R |