Table 2.
Effect of ultrasound (US) pretreatment and different methods on the Fat content, chlorophyll, Total carotenoid content and Ascorbic acid of Purslane.
| P0 | P1 | P2 | P3 | P4 | ||
|---|---|---|---|---|---|---|
| Fat Content (%) |
M1 | 3.20 ± 1.07aA | 3.19 ± 0.21aA | 3.18 ± 0.98aA | 3.17 ± 0.91aA | 3.16 ± 0.75aA |
| M2 | 3.23 ± 0.73aA | 3.22 ± 0.36aA | 3.20 ± 1.02aA | 3.19 ± 0.69aA | 3.17 ± 1.61aA | |
| M3 | 3.26 ± 0.71aA | 3.25 ± 0.86aA | 3.24 ± 0.48aA | 3.22 ± 0.95aA | 3.20 ± 0.92aA | |
| M4 | 3.32 ± 0.63aA | 3.31 ± 0.95aA | 3.29 ± 0.71aA | 3.28 ± 0.80aA | 3.27 ± 0.90aA | |
| M5 | 3.35 ± 0.08aA | 3.34 ± 0.72aA | 3.32 ± 0.24aA | 3.30 ± 0.45aA | 3.28 ± 1.23aA | |
| M6 | 3.33 ± 1.37aA | 3.32 ± 0.65aA | 3.3 ± 0.70aA | 3.29 ± 1.62aA | 3.27 ± 0.60aA | |
| Chlorophyll (mg/g) | M1 | 5.05 ± 0.05dD | 5.44 ± 0.06dC | 5.99 ± 0.06eB | 6.24 ± 0.06dA | 6.24 ± 0.06eA |
| M2 | 5.33 ± 0.09bE | 5.97 ± 0.11cD | 6.30 ± 0.06dC | 6.99 ± 0.02cB | 7.15 ± 0.11dA | |
| M3 | 5.20 ± 0.07cE | 5.98 ± 0.10cD | 6.46 ± 0.07cC | 7.00 ± 0.08cB | 7.93 ± 0.05cA | |
| M4 | 4.78 ± 0.08eD | 4.86 ± 0.09eD | 5.01 ± 0.03fC | 5.57 ± 0.05eB | 5.78 ± 0.17fA | |
| M5 | 8.84 ± 0.06aE | 8.99 ± 0.06aD | 9.97 ± 0.04aC | 10.24 ± 0.07aB | 12.39 ± 0.08aA | |
| M6 | 5.32 ± 0.08bE | 6.92 ± 0.11bD | 7.51 ± 0.11bC | 8.98 ± 0.06bB | 9.47 ± 0.08bA | |
| Total carotenoid content (mg/100 g) |
M1 | 37.70 ± 0.14fE | 44.56 ± 0.11eD | 45.28 ± 0.08eC | 46.01 ± 0.12eB | 47.18 ± 0.05fA |
| M2 | 42.86 ± 0.06eE | 43.14 ± 0.10fD | 43.98 ± 0.06fC | 45.67 ± 0.04fB | 49.78 ± 0.06eA | |
| M3 | 50.34 ± 0.08dE | 53.27 ± 0.06dD | 54.00 ± 0.060dC | 55.45 ± 0.07dB | 55.98 ± 0.05dA | |
| M4 | 53.88 ± 0.04cE | 57.5 ± 0.05bD | 58.61 ± 0.06cC | 63.59 ± 0.11cB | 66.9 ± 0.02cA | |
| M5 | 67.93 ± 0.03aE | 79.26 ± 0.06aD | 83.16 ± 0.08aC | 94.05 ± 0.05aB | 99.74 ± 0.06aA | |
| M6 | 55.81 ± 0.13bE | 57.08 ± 0.06cD | 62.71 ± 0.10bC | 71.25 ± 0.09bB | 79.48 ± 0.08bA | |
| Ascorbic acid (mg/100 g) | M1 | 302.36 ± 0.10fE | 302.58 ± 0.06fD | 302.78 ± 0.08fC | 302.95 ± 0.17fB | 303.20 ± 0.09fA |
| M2 | 320.12 ± 0.08eE | 320.25 ± 0.04eD | 320.56 ± 0.12eC | 321.46 ± 0.08eB | 321.98 ± 0.11eA | |
| M3 | 325.23 ± 0.05dE | 325.48 ± 0.04dD | 325.64 ± 0.14dC | 326.48 ± 0.09dB | 326.94 ± 0.07dA | |
| M4 | 336.20 ± 0.08cD | 336.45 ± 0.06cC | 336.49 ± 0.10cC | 336.99 ± 0.08cB | 337.56 ± 0.07cA | |
| M5 | 398.60 ± 0.04aE | 398.92 ± 0.09aD | 399.20 ± 0.07aC | 399.49 ± 0.07aB | 399.94 ± 0.08aA | |
| M6 | 340.41 ± 0.05bD | 340.52 ± 0.05bD | 340.98 ± 0.09bC | 341.15 ± 0.04bB | 341.96 ± 0.07bA |
Values are expressed as Mean ± SD (n = 3), a-f within a column and A-F within a row, with different letters are significantly different. M1 (sun drying), M2 (solar tunnel drying), M3 (cabinet drying), M4 (vacuum drying), M5 (freeze drying) and M6 (microwave assisted drying). P0 (control), P1 (US treatment for 15 min), P2 (US treatment for 30 min), P3 (US treatment for 45 min), P4 (US treatment for 60 min).