Effect of Active Oxygen Scavengers on Fruits of Late-maturing Longan Cultivar
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摘要: 为探讨活性氧清除剂对晚熟龙眼挂树保鲜的影响,用1g·L-1的苯甲酸钠、甘露醇、没食子酸丙酯、乙酰水杨酸、抗坏血酸、L-半胱氨酸和维生素E喷雾立冬本果穗,以双蒸水喷雾为对照。结果表明,与对照相比,活性氧清除剂处理能减少龙眼果皮膜脂过氧化,抑制果皮中丙二醛(MDA)生成;推迟和降低果肉自溶发生;使果实保持较高的TSS,其中,抗坏血酸的效果最好,其次是没食子酸丙酯。Abstract: Solutions of active oxygen scavengers were sprayed on the late-maturing longan trees to examine the effect on quality of the fruits. Seven chemical agents, including sodium benzoate, mannitol, propyl gallate, acetyl salicylic acid, ascorbic acid, L-cysteine and vitamin E, in water solutions at a concentrations of 1 g·L-1were used for the experiment. A double distilled water was applied as control. It appeared that the solutions containing these active oxygen scavengers, especially ascorbic acid and propyl gallate, could decrease the lipid peroxidation in the membrane of pericarp, inhibit formation of MDA in the pericarp, delay and reduce the autolysis of fruitflesh, as well as maintain the level of soluble solidcontent in the fruits.
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Key words:
- longan /
- active oxygen scavenger /
- freshness of fruits on tree
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表 1 龙眼果实挂树期间活性氧清除剂对果实的影响
Table 1. Effect of active oxygen scavenger on fruits on longan trees
指标 处理 挂树时间/d 5 10 15 20 25 可溶性固形物含量/% CK 19.35±0.78aA 19.40±1.28aA 18.61±1.24aA 17.72±1.67aA 17.35±1.26aA A 20.92±1.55bAB 20.42±1.48abA 20.43±1.70abA 19.58±1.52aA 19.12±1.55abA B 21.31±0.90bAB 20.44±1.14abA 20.14±0.60abA 19.77±0.50aA 18.87±0.05abA C 21.85±0.95bB 21.46±0.62bA 21.24±1.04bA 19.47±1.30aA 19.42±0.66abA D 21.40±0.58bAB 21.49±0.38bA 20.37±0.18abA 20.24±0.72aA 19.65±0.78bA E 22.43±0.22bB 21.58±0.59bA 21.17±0.76bA 20.21±1.15aA 19.90±0.77bA F 21.59±0.59bB 21.26±0.76abA 19.82±1.04abA 19.18±1.36aA 19.29±1.39abA G 21.71±0.40bB 20.49±1.13abA 19.72±1.41abA 19.21±1.64aA 19.05±1.59abA 单果重/g CK 10.33±0.83aA 10.31±0.38aA 10.25±0.32aA 10.59±0.55aA 10.31±0.16aA A 11.22±1.46aA 11.13±1.31aA 11.20±1.50aA 11.49±1.55aA 11.81±1.88aA B 10.59±0.27aA 10.90±0.67aA 11.01±1.21aA 12.17±0.55aA 12.11±0.51aA C 10.82±0.61aA 11.13±1.53aA 11.41±1.57aA 12.08±2.13aA 11.57±1.69aA D 10.52±0.15aA 11.04±0.30aA 10.62±0.79aA 11.28±0.53aA 11.25±0.79aA E 11.89±1.52aA 12.08±1.23aA 12.04±1.47aA 12.62±1.30aA 12.30±0.96aA F 10.31±0.40aA 10.68±0.71aA 11.18±1.68aA 11.38±1.18aA 12.07±0.70aA G 11.09±0.63aA 11.37±1.31aA 11.73±1.35aA 12.16±1.46aA 12.20±1.41aA 可食率/% CK 63.79±0.39aA 63.47±0.35abA 64.15±1.37abA 63.68±0.49aA 61.60±1.30aA A 62.38±1.51aA 62.49±1.73abA 62.06±0.77aA 61.80±0.39aA 61.26±0.55aA B 62.81±1.51aA 63.05±0.47abA 64.38±0.89bA 63.25±1.16aA 61.72±1.57aA C 62.65±0.90aA 62.18±0.60aA 62.60±1.36abA 62.53±1.96aA 61.46±1.45aA D 62.24±0.34aA 62.01±0.55aA 62.86±1.46abA 62.02±0.65aA 61.26±0.35aA E 64.03±1.08aA 64.40±1.46bA 63.67±1.47abA 63.05±0.68aA 62.60±1.80aA F 63.65±0.52aA 61.80±0.81aA 62.83±0.32abA 63.41±1.12aA 62.65±0.21aA G 63.26±2.25aA 62.66±1.20abA 63.24±0.89abA 62.13±1.07aA 62.13±0.44aA 自溶指数 CK 0.00aA 0.17aA 0.58aA 2.59bA 10.00bB A 0.00aA 0.11aA 0.18aA 0.98abA 9.78abAB B 0.00aA 0.00aA 0.00aA 1.26abA 8.11bB C 0.00aA 0.00aA 0.08aA 2.02abA 10.00bB D 0.00aA 0.00aA 0.44aA 2.31bA 10.00bB E 0.00aA 0.00aA 0.00aA 0.67aA 6.67aA F 0.00aA 0.00aA 0.00aA 1.99abA 10.00bB G 0.00aA 0.17aA 0.28aA 1.09abA 10.00bB 相对电导率/% CK 25.28±2.14bA 24.17±1.74bB 25.74±4.99bcA 48.66±6.54dC 52.73±5.65cB A 19.42±6.18abA 16.21±2.62aA 18.53±3.63abA 34.52±5.35bcAB 39.52±3.05abAB B 16.86±3.68aA 17.36±4.34aA 24.36±1.71bcA 28.46±6.19abAB 34.21±4.76abA C 17.10±3.02aA 17.61±2.74aA 17.25±3.59aA 26.19±0.89abAB 33.42±8.84abA D 17.42±1.49aA 17.11±1.11aA 22.07±4.03bcA 37.74±2.46cBC 42.32±4.19bAB E 17.28±1.99aA 17.50±0.77aA 18.75±3.88abA 25.22±5.15aA 30.91±3.84aA F 17.47±3.39aA 18.17±2.54aA 26.26±1.12cA 28.26±1.40abAB 36.74±5.19abA G 20.77±4.88abA 17.70±0.42aA 21.61±5.90bcA 31.75±5.52bcAB 33.57±8.17abA 丙二醛/(nmol·g-1) CK 8.58±0.84bB 10.59±0.84bB 11.40±0.87bB 15.51±0.55bA 12.43±1.32bB A 6.57±1.10aAB 8.04±1.92abAB 8.95±1.76abAB 11.32±1.92abA 8.22±0.95aAB B 7.85±0.37abAB 6.39±0.63aA 7.31±0.84aA 8.95±1.92aA 6.76±2.21aA C 6.39±0.40aA 7.85±1.67aAB 8.58±2.21aAB 11.51±1.64abA 6.21±0.32aA D 6.61±0.56aAB 6.76±1.38aAB 6.94±1.67aA 11.14±0.84abA 8.40±3.73aAB E 6.60±0.55aAB 6.21±1.67aA 7.31±0.32aA 8.58±2.07aA 6.58±0.55aA F 6.94±0.97aAB 7.67±1.45aAB 7.67±1.90aAB 11.51±2.19abA 8.04±2.59aAB G 7.69±1.02abAB 6.39±1.92aA 6.21±1.38aA 11.14±6.40abA 9.32±0.95abAB 注:CK为双蒸水;A为苯甲酸钠;B为甘露醇;C为没食子酸丙酯;D为乙酰水杨酸;E为抗坏血酸;F为L-半胱氨酸;G为维生素E。同列数据后不同大、小写字母表示差异达极显著(P<0.01) 或显著(P<0.05) 水平。 -
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