Table 3. Effect of synthetic and natural tenderizers on coliforms, psychrophilic count and sensory quality of RSHS stored under aerobic packaging at refrigeration temperature (4±1°C) (Mean±SE).
| Treatment | 0 | 7 | 14 | 21 |
|---|---|---|---|---|
| Microbial quality | ||||
| Coliform count (Log10CFU/g) | ||||
| C | ND | ND | 1.76±0.15aB | 1.97±0.16bB |
| T1 | ND | ND | 1.79±0.24aB | 1.99±0.18bB |
| T2 | ND | ND | 1.49±0.10aA | 1.73±0.07bA |
| T3 | ND | ND | 1.46±0.15aA | 1.82±0.16bAB |
| Psychrophilic count (Log10 CFU/g) | ||||
| C | ND | 1.86±0.164aB | 2.24±0.16bB | 2.70±0.13cB |
| T1 | ND | 1.91±0.177aB | 2.21±0.09abB | 2.60±0.31bB |
| T2 | ND | 1.48±0.150aA | 2.08±0.20abA | 2.37±0.20bA |
| T3 | ND | 1.64±0.059aAB | 2.16±0.20bAB | 2.47±0.17cAB |
| Sensory quality | ||||
| Appearance and colour | ||||
| C | 7.11±0.03b | 7.06±0.04b | 6.35±0.09a | NP |
| T1 | 7.06±0.08b | 7.03±0.08b | 6.52±0.11a | NP |
| T2 | 7.16±0.16c | 7.02±0.08c | 6.42±0.10b | 6.02±0.13a |
| T3 | 7.18±0.06c | 6.98±0.06bc | 6.52±0.13b | 6.14±0.06a |
| Flavour | ||||
| C | 7.07±0.12bAB | 6.88±0.12bAB | 6.11±0.11aA | NP |
| T1 | 7.03±0.07bAB | 6.93±0.07bAB | 6.21±0.14aAB | NP |
| T2 | 7.22±0.06cB | 7.17±0.07cB | 6.55±0.11bC | 6.17±0.13aB |
| T3 | 6.81±0.07cA | 6.73±0.07cA | 6.31±0.10bB | 5.80±0.19aA |
| Juiciness | ||||
| C | 7.07±0.12bAB | 6.88±0.12bAB | 6.19±0.11aA | NP |
| T1 | 7.03±0.07bAB | 6.93±0.07bAB | 6.21±0.14aA | NP |
| T2 | 7.22±0.06cB | 7.17±0.07cB | 6.52±0.13bB | 6.11±0.13a |
| T3 | 6.81±0.07cA | 6.73±0.07cA | 6.31±0.12bAB | 5.97±0.19a |
| Tenderness | ||||
| C | 7.01±0.12bAB | 6.91±0.11b | 6.34±0.14aA | NP |
| T1 | 7.05±0.07bAB | 6.89±0.07b | 6.36±0.15aA | NP |
| T2 | 7.25±0.06cB | 7.11±0.15c | 6.53±0.11bB | 6.10±0.05a |
| T3 | 6.82±0.07cA | 6.80±0.07c | 6.30±0.09bA | 5.85±0.16a |
| Overall acceptability | ||||
| C | 7.05±0.05bAB | 6.90±0.06bAB | 6.39±0.11a | NP |
| T1 | 7.20±0.09bAB | 7.11±0.09bB | 6.28±0.11a | NP |
| T2 | 7.25±0.04cB | 7.10±0.15cB | 6.42±0.17b | 6.11±0.05aB |
| T3 | 6.85±0.02cA | 6.78±0.02cA | 6.29±0.06b | 5.85±0.10aA |
Means with different superscripts (a, b, c and A, B, C) differ significantly (p<0.05) in a row and column respectively; n=6 for each treatment (C, control; T1, RSHS with 1.25% calcium chloride; T2, RSHS with 1.5% pineapple peel powder; T3, RSHS with 1.5% fig powder; ND, not detected; NP, not performed; RSHS, restructured spent hen meat slices.