Trans-2-hexenal is a naturally occurring volatile phytochemical with antimicrobial activity. It has not been widely used for the preservation of fruit and vegetables owing to its rapid volatilization. In this study, β-cyclodextrin-trans-2-hexenal microcapsules (β-CTHM) were prepared using the saturated aqueous solution method and their efficacy in preserving pears was evaluated. Results from scanning electron microscopy, thermogravimetric analysis, and Fourier-transform infrared spectroscopy indicated that β-CTHM was successfully prepared with an encapsulation efficiency of 67.52 %. The release of trans-2-hexenal from the microcapsules was dependent on the storage temperature. β-CTHM significantly inhibited the mycelial growth of Alternaria alternata in vitro. Furthermore, β-CTHM at 0.4 g/L fumigation treatment inhibited black rot of ‘Zaosu’ pears, maintained fruit firmness and titratable acidity, and reduced the respiration rate. Our present study suggested that β-CTHM might be used as an alternative to other preservative methods in retaining postharvest fruit quality.

反式-2-己烯醛是具有抗菌活性的天然挥发性植物化学物质。由于其快速挥发，尚未广泛用于水果和蔬菜的保存。在这项研究中，使用饱和水溶液方法制备了β-环糊精-反式-2-己烯微胶囊（β - CTHM），并评估了它们在保存梨子中的功效。扫描电子显微镜，热重分析和傅立叶变换红外光谱的结果表明，成功制备了β- CTHM，其包封率为67.52％。反式-2-己烯醛从微囊中的释放取决于储存温度。β- CTHM显着抑制小鼠的菌丝体生长交链孢菌的体外培养。此外，以0.4 g / L熏蒸处理的β- CTHM抑制了'Zaosu'梨的黑腐病，保持了果实的硬度和可滴定的酸度，并降低了呼吸速率。我们目前的研究表明，β- CTHM可以替代其他防腐剂，以保持采后果实的品质。