Table 5.
pH, aW, physico-chemical and headspace gas composition (±SD) of ricotta samples by smoking time (1, 2 and 3 hours) stored at 7°C.
| Parameters | Smoking | Day of storage | |||
|---|---|---|---|---|---|
| T0 | T15 | T30 | T45 | ||
| pH | H1 | (n = 6) 6.32±0.03a1 | (n = 6) 6.26±0.12a1 | (n = 6) 6.10±0.09b1 | (n = 6) 6.14±0.06b1 |
| H2 | (n = 6) 6.29±0.03a1 | (n = 6) 6.15±0.22a1 | (n = 6) 5.91±0.68b2 | (n = 6) 5.91±0.11b2 | |
| H3 | (n = 6) 6.32±0.06a1 | (n = 6) 6.07±0.24b1 | (n = 6) 5.71±0.86c3 | (n = 6) 5.81±0.16c2 | |
| aw | H1 | (n = 6) 0.984±0.004a1 | (n = 6) 0.979±0.006a1 | (n = 6) 0.979±0.006a1 | (n = 6) 0.982±0.006a1 |
| H2 | (n = 6) 0.984±0.005a1 | (n = 6) 0.981±0.006a1 | (n = 6) 0.982±0.004a1 | (n = 6) 0.984±0.005a1 | |
| H3 | (n = 6) 0.986±0.005a1 | (n = 6) 0.980±0.003ab1 | (n = 6) 0.979±0.004b1 | (n = 6) 0.985±0.006ab1 | |
| Moisture (%) | H1 | (n = 6) 75.08±1.17a1 | (n = 6) 75.61±1.86a1 | (n = 6) 75.95±.06a1 | (n = 6) 74.99±2.14a1 |
| H2 | (n = 6) 74.92±2.29a1 | (n = 6) 73.72±2.03a1 | (n = 6) 75.03±1.79a1 | (n = 6) 75.12±1.98a1 | |
| H3 | (n = 6) 73.66±1.92a1 | (n = 6) 73.66±1.15a1 | (n = 6) 73.41±2.17a1 | (n = 6) 74.37±1.83a1 | |
| Fat (%) | H1 | (n = 6) 10.89±1.01a1 | (n = 6) 10.15±1.83a1 | (n = 6) 9.65±1.75a1 | (n = 6) 10.38±0.89a1 |
| H2 | (n = 6) 10.71±1.52ab1 | (n = 6) 10.92±1.09b1 | (n = 6) 9.78±0.87ab1 | (n = 6) 9.38±1.76a1 | |
| H3 | (n = 6) 11.80±1.73a1 | (n = 6) 10.68±1.00ab1 | (n = 6) 10.43±1.29ab1 | (n = 6) 9.66±0.51b1 | |
| Proteins (%) | H1 | (n = 6) 10.34±0.53a1 | (n = 6) 10.82±0.37ab1 | (n = 6) 10.93±0.45b1 | (n = 6) 11.14±0.34b1 |
| H2 | (n = 6) 10.34±0.58a1 | (n = 6) 10.79±0.44ab1 | (n = 6) 10.97±0.17b1 | (n = 6) 11.16±0.18b1 | |
| H3 | (n = 6) 10.40±0.61a1 | (n = 6) 11.06±0.34b1 | (n = 6) 11.09±0.35b1 | (n = 6) 11.31±0.37b1 | |
| Salt (%) | H1 | (n = 6) 1.91±0.43a1 | (n = 6) 1.70±0.53a1 | (n = 6) 1.79±0.40a1 | (n = 6) 1.69±0.69a1 |
| H2 | (n = 6) 1.99±0.36a1 | (n = 6) 1.82±0.66a1 | (n = 6) 1.70±0.49a1 | (n = 6) 1.65±0.47a1 | |
| H3 | (n = 6) 1.73±0.21a1 | (n = 6) 1.66±0.42a1 | (n = 6) 1.49±0.33a1 | (n = 6) 1.44±0.34a1 | |
| N (%) | H1 | (n = 4) 90.22±1.85a1 | (n = 6) 93.63±0.94b1 | (n = 6) 93.80±2.56b1 | (n = 6) 92.27±3.44ab1 |
| H2 | (n = 4) 89.48±2.02a1 | (n = 6) 93.03±0.77b1 | (n = 6) 93.53±0.83b1 | (n = 6) 93.40±0.44b1 | |
| H3 | (n = 3) 87.43±2.76a1 | (n = 6) 92.67±0.81b1 | (n = 6) 92.73±0.59b1 | (n = 6) 92.52±1.01b1 | |
| O2 (%) | H1 | (n = 4) 1.36±0.18a1 | (n = 6) 0.70±0.21b1 | (n = 6) 0.12±0.14cb1 | (n = 6) 0.01±0.01c1 |
| H2 | (n = 4) 1.12±0.27a1 | (n =6) 0.69±0.58a1 | (n = 6) 0.18±0.09b1 | (n = 6) 0.09±0.06b2 | |
| H3 | (n = 3) 1.08±0.43a1 | (n =6) 0.28±0.14b1 | (n = 6) 0.08±0.06b1 | (n = 6) 0.09±0.04b2 | |
| C02 (%) | H1 | (n = 4) 8.42±1.89a1 | (n = 6) 5.68±1.03b1 | (n = 6) 6.01±2.61b1 | (n = 6) 7.60±3.54b1 |
| H2 | (n = 4) 9.55±2.14a1 | (n = 6) 5.87±0.37b1 | (n = 6) 6.32±0.75b1 | (n = 6) 6.47±0.40b1 | |
| H3 | (n = 3) 11.05±2.35a1 | (n = 6) 6.98±0.71b2 | (n = 6) 7.27±0.57b1 | (n = 6) 7.04±1.04b1 | |
Values in the same row with different superscript letter are statistically different (P<0.05). Values in the same column with different superscript number are statistically different (P<0.05).