ABSTRACT

Reducing post-harvest losses and increasing the shelf life of agricultural products leads to reduced production costs. Edible coatings are used to improve fruit quality and increase the shelf-life of horticultural commodities. Therefore, this study aims to investigate the possible effect of edible coatings, including tragacanth gum (TG), Eremurus extract (EE) and tragacanth+Eremurus at 0, 7.5, 10, and 12.5 g L⁻¹, on the fruit quality of ‘Takdaneh Mashhad’ sweet cherry cultivar. Fruits were immersed in the treatment solutions for 3 min and air dried. Then after weighing and labeling, they were collected in fruit baskets and transferred to a cold storage at 0 ± 1°C and 85 to 90% relative humidity. These fruits were taken out of the cold storage at the beginning of the experiment and after 15, 30, and 45 days for measuring fruit weight loss, fruit firmness, soluble solids content (SSC), pH, titratable acidity, total phenolic content, polyphenol oxidase enzyme activity, vitamin C, fruit-edible quality, fruit color, and decay index. According to the results, fruits coated with 12.5 g L⁻¹ TG and also 12.5 g L⁻¹ EE coatings individually showed reduction in weight loss compared to the control treatment. These two treatments increased the qualitative appearance of the fruit such as fruit firmness, color and vitamin C compared to the control fruits. All coating treatments reduced decay index. The present study was the first study to investigate the effect of Eremurus alone or in combination with tragacanth gum on the physicochemical properties of sweet cherry fruit.

摘要

减少收获后损失并延长农产品的保质期可降低生产成本。可食用涂料用于提高水果质量并延长园艺商品的保质期。因此，本研究旨在研究可食用涂层的可能影响，包括黄蓍胶 (TG)、Eremurus提取物 (EE) 和黄蓍胶+ Eremurus在 0、7.5、10 和 12.5 g L ^-1，关于'Takdaneh Mashhad'甜樱桃品种的果实品质。将水果浸入处理溶液中 3 分钟并风干。然后在称重和贴标签后，将它们收集在水果篮中并转移到 0 ± 1°C 和 85% 至 90% 相对湿度的冷藏库中。将这些水果在实验开始时和 15、30 和 45 天后从冷藏库中取出，分别测量水果失重、水果硬度、可溶性固形物（SSC）、pH、可滴定酸度、总酚含量、多酚氧化酶活性、维生素C、果实食用品质、果实颜色和腐烂指数。根据结果​​，果实涂有 12.5 g L ^-1 TG 和 12.5 g L ^-1与对照处理相比，EE 涂层单独显示出重量损失的减少。与对照果实相比，这两种处理提高了果实的品质外观，例如果实硬度、颜色和维生素 C。所有涂层处理都降低了衰减指数。本研究是第一项研究单独或与黄蓍胶合用对甜樱桃果实理化性质影响的研究。