Figure 1
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Figure 4
Variation in TSS (A), TA (B), VC (C), total phenols (D) and total flavonoids (E) contents of Ponkan mandarins stored at different temperature_
| Parameter | Treatment | Harvested | Storage time (days) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 30 | 45 | 60 | 75 | 90 | 105 | 120 | |||
| A. TSS content (%) | S5 | 10.57 ± 0.089 | 10.88 ± 0.089 d | 11.30 ± 0.000 d | 11.44 ± 0.055 c | 12.60 ± 0.122 b | 11.22 ± 0.084 b | 11.16 ± 0.114 a | 10.58 ± 0.110 b | 10.14 ± 0.055 b |
| S10 | 11.12 ± 0.045 c | 11.52 ± 0.055 c | 11.74 ± 0.089 b | 13.04 ± 0.055 a | 11.90 ± 0.084 a | 11.28 ± 0.084 a | 10.88 ± 0.114 a | 10.40 ± 0.100 a | ||
| S15 | 11.32 ± 0.045 b | 11.84 ± 0.055 b | 12.26 ± 0.089 a | 11.56 ± 0.055 c | 10.68 ± 0.084 c | 10.36 ± 0.084 b | 10.36 ± 0.114 b | 10.08 ± 0.055 b | ||
| S20 | 11.64 ± 0.45 a | 12.44 ± 0.055 a | 11.54 ± 0.055 c | 10.94 ± 0.055 d | 10.52 ± 0.084 c | 10.18 ± 0.084 c | 9.88 ± 0.084 c | 9.64 ± 0.055 c | ||
| B. TA content (%) | S5 | 1.63 ± 0.0.42 | 1.43 ± 0.013 a | 1.09 ± 0.005 a | 1.01 ± 0.008 a | 0.94 ± 0.036 a | 0.77 ± 0.032 a | 0.75 ± 0.014 a | 0.68 ± 0.015 a | 0.63 ± 0.028 a |
| S10 | 1.35 ± 0.041 b | 1.00 ± 0.009 b | 0.94 ± 0.013 b | 0.89 ± 0.009 b | 0.73 ± 0.008 a | 0.70 ± 0.011 b | 0.65 ± 0.009 b | 0.61 ± 0.003 a | ||
| S15 | 1.24 ± 0.028 c | 0.86 ± 0.030 c | 0.71 ± 0.015 c | 0.66 ± 0.017 c | 0.60 ± 0.030 b | 0.51 ± 0.011 c | 0.45 ± 0.007 c | 0.38 ± 0.002 b | ||
| S20 | 1.05 ± 0.026 d | 0.75 ± 0.015 d | 0.62 ± 0.014 d | 0.61 ± 0.007 d | 0.57 ± 0.008 c | 0.48 ± 0.014 d | 0.40 ± 0.009 d | 0.34 ± 0.010 c | ||
| C. VC content (mg · 100 g−1) | S5 | 25.10 ± 0.365 | 26.91 ± 0.637 c | 27.97 ± 0.785 a | 27.21 ± 0.531 b | 26.28 ± 0.099 b | 24.75 ± 0.662 b | 23.77 ± 0.455 b | 23.50 ± 0.367 a | 22.50 ± 0.714 a |
| S10 | 27.28 ± 0.128 b | 27.85 ± 0.043 a | 28.45 ± 0.243 a | 27.32 ± 0.240 a | 26.48 ± 0.481 a | 25.80 ± 0.178 a | 24.02 ± 0.014 a | 23.19 ± 0.559 a | ||
| S15 | 28.57 ± 0.367 b | 26.43 ± 0.292 b | 26.21 ± 0.178 bc | 25.44 ± 0.370 c | 24.32 ± 0.327 bc | 23.07 ± 0.050 b | 22.61 ± 0.175 b | 21.28 ± 0.357 b | ||
| S20 | 29.79 ± 0.269 a | 26.14 ± 0.132 b | 25.61 ± 0.354 c | 24.96 ± 0.034 d | 23.50 ± 0.328 c | 22.48 ± 0.291 d | 22.10 ± 0.469 b | 20.90 ± 0.690 b | ||
| D. TPC (mg · g−1) | S5 | 7.48 ± 0.018 | 7.80 ± 0.028 b | 8.32 ± 0.013 b | 8.45 ± 0.150 b | 7.92 ± 0.036 ab | 7.62 ± 0.150 b | 7.41 ± 0.022 b | 7.26 ± 0.045 b | 6.99 ± 0.071 ab |
| S10 | 7.96 ± 0.017 a | 8.54 ± 0.030 a | 8.88 ± 0.034 a | 8.18 ± 0.170 a | 7.91 ± 0.041 a | 7.60 ± 0.113 a | 7.39 ± 0.013 a | 7.09 ± 0.037 a | ||
| S15 | 7.61 ± 0.023 c | 7.99 ± 0.030 c | 8.27 ± 0.040 c | 7.83 ± 0.213 b | 7.40 ± 0.023 c | 7.19 ± 0.053 c | 7.03 ± 0.084 c | 6.88 ± 0.11 b | ||
| S20 | 7.58 ± 0.154 c | 7.78 ± 0.209 d | 7.91 ± 0.047 d | 7.35 ± 0.101 c | 7.13 ± 0.074 d | 6.82 ± 0.050 d | 6.64 ± 0.051 d | 6.27 ± 0.112 c | ||
| E. TFC (mg · g−1) | S5 | 2.36 ± 0.021 | 3.08 ± 0.086 ab | 3.19 ± 0.098 ab | 3.48 ± 0.044 b | 4.01 ± 0.072 b | 3.71 ± 0.055 b | 3.59 ± 0.043 b | 3.54 ± 0.012 b | 3.38 ± 0.021 ab |
| S10 | 3.22 ± 0.031 a | 3.31 ± 0.170 a | 3.88 ± 0.194 a | 4.20 ± 0.137 a | 3.96 ± 0.107 a | 3.82 ± 0.000 a | 3.68 ± 0.077 a | 3.50 ± 0.032 a | ||
| S15 | 2.92 ± 0.130 bc | 3.10 ± 0.198 ab | 3.32 ± 0.145 bc | 3.86 ± 0.031 b | 3.58 ± 0.043 bc | 3.39 ± 0.0101 c | 3.28 ± 0.071 c | 3.26 ± 0.107 b | ||
| S20 | 2.74 ± 0.126 c | 2.83 ± 0.084 b | 3.16 ± 0.070 c | 3.49 ± 0.021 c | 3.44 ± 0.098 c | 3.21 ± 0.012 d | 3.12 ± 0.043 d | 3.00 ± 0.119 c | ||