TABLE 2.
Enzyme activities of SOD, CAT, APX, and H2O2 content in Yudazi husks and arils during cold storage at 4 ± 0.5°C.
| Parameters | Arginine treatment (mM) | Storage days |
||||
| 0 | 20 | 40 | 60 | 80 | ||
| Aril SOD (mkat⋅kg–1) | 0 | 0.89 ± 0.07b | 0.89 ± 0.06b | 0.78 ± 0.02c | 0.53 ± 0.04e | 0.44 ± 0.03f |
| 0.5 | 0.92 ± 0.08ab | 0.96 ± 0.05ab | 0.81 ± 0.03c | 0.61 ± 0.04d | 0.51 ± 0.04e | |
| 1.0 | 0.96 ± 0.04ab | 1.00 ± 0.06a | 0.82 ± 0.05c | 0.62 ± 0.04d | 0.57 ± 0.04de | |
| 1.5 | 0.95 ± 0.07ab | 1.02 ± 0.06a | 0.89 ± 0.07b | 0.65 ± 0.03d | 0.62 ± 0.04d | |
| 2.0 | 0.91 ± 0.08ab | 0.94 ± 0.07ab | 0.80 ± 0.03c | 0.55 ± 0.06de | 0.46 ± 0.03f | |
| Husk SOD (mkat⋅kg–1) | 0 | 2.67 ± 0.10c | 2.79 ± 0.10c | 2.74 ± 0.09c | 2.60 ± 0.08d | 2.43 ± 0.06e |
| 0.5 | 2.68 ± 0.08c | 3.18 ± 0.10b | 2.92 ± 0.09bc | 2.80 ± 0.09c | 2.49 ± 0.10e | |
| 1.0 | 2.76 ± 0.11c | 3.46 ± 0.11a | 3.05 ± 0.10b | 2.93 ± 0.08bc | 2.66 ± 0.09d | |
| 1.5 | 2.71 ± 0.13c | 3.37 ± 0.09a | 3.03 ± 0.11b | 2.97 ± 0.10b | 2.57 ± 0.15d | |
| 2.0 | 2.70 ± 0.10c | 3.24 ± 0.15a | 3.01 ± 0.13b | 2.98 ± 0.09b | 2.56 ± 0.13d | |
| Aril CAT (g⋅(kg⋅min)–1) | 0 | 22.32 ± 0.48ab | 21.12 ± 0.46bc | 20.64 ± 0.50c | 19.92 ± 0.85cd | 18.72 ± 0.35d |
| 0.5 | 22.44 ± 0.36ab | 21.24 ± 0.80bc | 21.12 ± 0.70bc | 20.64 ± 0.45c | 19.92 ± 0.44cd | |
| 1.0 | 22.92 ± 0.60a | 23.80 ± 0.46a | 22.68 ± 0.60a | 21.48 ± 0.56b | 21.24 ± 0.38c | |
| 1.5 | 22.56 ± 0.90ab | 22.20 ± 0.48b | 21.60 ± 0.56b | 20.76 ± 0.72bc | 20.04 ± 0.50cd | |
| 2.0 | 22.20 ± 0.75ab | 20.64 ± 0.72c | 20.88 ± 0.50bc | 19.92 ± 0.55cd | 19.68 ± 0.62cd | |
| Husk CAT (g⋅(kg⋅min)–1) | 0 | 22.56 ± 0.48ab | 21.24 ± 0.55b | 20.64 ± 0.60c | 20.04 ± 0.62d | 18.60 ± 0.48e |
| 0.5 | 22.56 ± 0.40ab | 20.40 ± 0.50c | 19.08 ± 0.25d | 18.60 ± 0.35e | 18.12 ± 0.50e | |
| 1.0 | 23.52 ± 0.54a | 23.86 ± 0.45a | 21.48 ± 0.48b | 20.64 ± 0.30bc | 20.40 ± 0.45c | |
| 1.5 | 23.42 ± 0.76a | 20.88 ± 0.72bc | 20.64 ± 0.78bc | 20.40 ± 0.39c | 20.16 ± 0.52cd | |
| 2.0 | 23.40 ± 0.52a | 21.36 ± 0.60b | 20.28 ± 0.56cd | 20.04 ± 0.42c | 19.44 ± 0.49de | |
| Aril APX (mkat⋅kg–1) | 0 | 15.09 ± 0.63ab | 13.34 ± 0.51bc | 12.08 ± 0.56de | 10.76 ± 0.33ef | 9.56 ± 0.31g |
| 0.5 | 14.90 ± 0.51ab | 13.34 ± 0.66bc | 11.52 ± 0.30e | 10.73 ± 0.38ef | 9.91 ± 0.42g | |
| 1.0 | 15.94 ± 0.60a | 16.06 ± 0.45a | 12.84 ± 0.30d | 11.34 ± 0.26e | 11.18 ± 0.25e | |
| 1.5 | 15.84 ± 0.48a | 14.10 ± 0.46b | 12.93 ± 0.37d | 11.15 ± 0.33e | 10.84 ± 0.37ef | |
| 2.0 | 15.43 ± 0.41ab | 13.84 ± 0.40c | 12.42 ± 0.56d | 11.35 ± 0.30e | 10.51 ± 0.50efg | |
| Husk APX (mkat⋅kg–1) | 0 | 2.81 ± 0.10bc | 2.28 ± 0.11e | 2.24 ± 0.08e | 2.08 ± 0.12f | 1.85 ± 0.08g |
| 0.5 | 3.00 ± 0.11b | 2.50 ± 0.12cd | 2.40 ± 0.08d | 2.33 ± 0.11de | 2.10 ± 0.14f | |
| 1.0 | 3.04 ± 0.10b | 3.33 ± 0.10a | 2.78 ± 0.06c | 2.72 ± 0.09c | 2.62 ± 0.10c | |
| 1.5 | 2.83 ± 0.13bc | 2.58 ± 0.13cd | 2.43 ± 0.05d | 2.30 ± 0.13de | 2.25 ± 0.11e | |
| 2.0 | 2.89 ± 0.10bc | 2.67 ± 0.11c | 2.39 ± 0.10d | 2.34 ± 0.10de | 2.23 ± 0.07e | |
| Aril H2O2 (mmol⋅kg–1) | 0 | 74.20 ± 6.26e | 89.40 ± 7.80cd | 103.48 ± 1.37c | 115.81 ± 7.00b | 128.94 ± 0.39a |
| 0.5 | 68.60 ± 6.21e | 89.66 ± 0.20d | 100.58 ± 5.69c | 105.24 ± 7.22bc | 116.68 ± 5.91b | |
| 1.0 | 67.31 ± 0.98e | 88.81 ± 0.78cd | 92.85 ± 5.78d | 93.55 ± 1.56d | 98.09 ± 2.93c | |
| 1.5 | 67.50 ± 5.74e | 91.74 ± 5.24cd | 95.82 ± 7.80c | 101.27 ± 5.28c | 112.48 ± 0.20b | |
| 2.0 | 68.00 ± 0.75e | 86.83 ± 7.41cd | 98.98 ± 4.69c | 110.05 ± 5.06bc | 114.72 ± 7.43b | |
| Husk H2O2 (mmol⋅kg–1) | 0 | 101.00 ± 6.06d | 116.81 ± 1.96c | 118.92 ± 3.60bc | 120.11 ± 8.61bc | 138.61 ± 3.59a |
| 0.5 | 100.00 ± 5.51d | 109.05 ± 7.24c | 112.67 ± 5.78c | 115.35 ± 7.50bc | 127.20 ± 3.91b | |
| 1.0 | 92.92 ± 3.50d | 109.74 ± 5.67c | 112.85 ± 5.75c | 114.15 ± 5.22c | 115.39 ± 5.20c | |
| 1.5 | 94.74 ± 6.24d | 101.44 ± 3.33d | 114.26 ± 1.76c | 115.41 ± 1.96c | 120.15 ± 2.35c | |
| 2.0 | 96.83 ± 5.41d | 105.79 ± 7.10cd | 109.90 ± 4.80c | 114.48 ± 7.04bc | 125.31 ± 3.90b | |
SOD, superoxide dismutase; APX, ascorbate peroxidase; CAT, catalase; H2O2, hydrogen peroxide.