Table 1.
Comparison of nutritional quality of raisins after different pretreatments.
| Nutritional Quality Index | Different Pretreatments | ||
|---|---|---|---|
| CK | DT | PT | |
| Fructose (%) | 23.8 ± 0.283 b | 23.45 ± 0.071 b | 25.65 ± 0.212 a |
| Glucose (%) | 23.6 ± 0.141 b | 22.5 ± 0.134 b | 25.2 ± 0.283 a |
| Total sugar (%) | 59.2 ± 1.414 b | 68.7 ± 1.131 a | 67.3 ± 1.273 a |
| Reducing sugar (%) | 57.75 ± 1.061 b | 66.95 ± 1.626 a | 66.65 ± 0.071 a |
| Total acid (g/kg) | 29.45 ± 1.202 b | 28.75 ± 0.212 c | 31.15 ± 0.212 a |
| Vc (mg/g) | 0.055 ± 0.003 b | 0.042 ± 0.005 b | 0.115 ± 0.005 a |
| Aspartic acid (g/100 g) | 0.061 ± 0.001 c | 0.135 ± 0.001 b | 0.139 ± 0.001 a |
| Threonine (g/100 g) | 0.031 ± 0.001 c | 0.066 ± 0.001 b | 0.069 ± 0.001 a |
| Serine (g/100 g) | 0.041 ± 0.001 c | 0.102 ± 0.00 a | 0.089 ± 0.001 b |
| Glutamic acid (g/100 g) | 0.113 ± 0.001 c | 0.218 ± 0.002 b | 0.248 ± 0.001 a |
| Glycine (g/100 g) | 0.042 ± 0.001 c | 0.095 ± 0.002 a | 0.093 ± 0.001 b |
| Alanine (g/100 g) | 0.101 ± 0.001 c | 0.227 ± 0.001 b | 0.231 ± 0.001 a |
| Cysteine (g/100 g) | 0.012 ± 0.001 b | 0.024 ± 0.001 a | 0.024 ± 0.001 a |
| Valine (g/100 g) | 0.038 ± 0.001 c | 0.076 ± 0.001 b | 0.080 ± 0.001 a |
| Methionine (g/100 g) | 0.012 ± 0.001 b | 0.012 ± 0.00 b | 0.016 ± 0.00 a |
| Isoleucine (g/100 g) | 0.029 ± 0.001 b | 0.063 ± 0.001 a | 0.064 ± 0.001 a |
| Leucine (g/100 g) | 0.048 ± 0.001 c | 0.103 ± 0.000 b | 0.108 ± 0.001 a |
| Tyrosine (g/100 g) | 0.011 ± 0.001 b | 0.027 ± 0.001 a | 0.028 ± 0.001 a |
| Phenylalanine (g/100 g) | 0.040 ± 0.001 c | 0.085 ± 0.001 b | 0.089 ± 0.001 a |
| Histidine (g/100 g) | 0.046 ± 0.001 c | 0.103 ± 0.001 a | 0.089 ± 0.001 b |
| Lysine (g/100 g) | 0.049 ± 0.001 c | 0.099 ± 0.00 b | 0.109 ± 0.001 a |
| Arginine (g/100 g) | 0.241 ± 0.001 c | 0.534 ± 0.001 b | 0.592 ± 0.003 a |
| Proline (g/100 g) | 0.064 ± 0.001 c | 0.142 ± 0.001 a | 0.138 ± 0.009 b |
Note: In the table, different lowercase letters within the same column denote a significant difference at p < 0.05. CK: the control group; DT: the drying agent treatment group; PT: the drying agent treatment group.