不同活性氧清除剂处理对晚熟龙眼挂树保鲜的影响

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。

Effect of Active Oxygen Scavengers on Fruits of Late-maturing Longan Cultivar

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.