College of Chemistry and Material Science, Shandong Agricultural University, Taian, Shandong 271018, China.
College of Agriculture, University of Sargodha, Sargodha, Punjab 40100, Pakistan.
Food Chem. 2019 Jul 1;285:10-21. doi: 10.1016/j.foodchem.2019.01.156. Epub 2019 Jan 31.
Sweet cherries rapidly depreciate in market value owing to decay and the quick loss of fruit quality after harvest. Therefore, optimum postharvest treatment is crucial for maintaining the qualities of cherries during storage. Here, we tested a new method of postharvest treatment by immersing sweet cherries in nitric oxide-releasing chitosan nanoparticles (GSNO-CS NPs), storing them at 0 °C and evaluating fruit quality over time. The results indicated that GSNO-CS NPs more effectively preserved the quality of cherries during cold storage compared to other methods. Specifically, GSNO-CS NPs reduced fruit weight loss, respiration rate and ethylene production and increased soluble solids content. Additionally, GSNO-CS NPs reduced reactive oxygen species, increased the antioxidant enzyme activity in direct and indirect antioxidant systems, and increased the levels of ascorbic acid and reduced glutathione. Overall, results suggest that treatment with GSNO-CS NPs can effectively preserve the quality of cherries and enhance antioxidant capacity during cold storage.
甜樱桃由于腐烂和收获后果实品质迅速下降，其市场价值迅速贬值。因此，最佳的采后处理对于在储存过程中保持樱桃的品质至关重要。在这里，我们测试了一种新的采后处理方法，即将甜樱桃浸泡在释放一氧化氮的壳聚糖纳米粒子（GSNO-CS NPs）中，在 0°C 下储存，并随着时间的推移评估水果的质量。结果表明，与其他方法相比，GSNO-CS NPs 更有效地保持了冷藏过程中樱桃的品质。具体来说，GSNO-CS NPs 减少了果实失重、呼吸速率和乙烯生成，并增加了可溶性固形物含量。此外，GSNO-CS NPs 减少了活性氧的产生，增加了直接和间接抗氧化系统中抗氧化酶的活性，并增加了抗坏血酸和还原型谷胱甘肽的水平。总的来说，研究结果表明，GSNO-CS NPs 的处理可以有效地保持樱桃的品质，并在冷藏过程中增强抗氧化能力。
