Abstract
Simple SummaryDamask rose is one of the most important aromatic plants that is being used in the perfume, cosmetic and pharmaceutical industries. However, the short blooming period leads to a reduced oil quantity and quality; therefore, preserving the flower shelf life is a crucial step in maintaining the economic viability of this crop. This research aimed to study the effect of 400 mg m−3 of 1-methylcyclopropene (1-MCP) and either the pre- or postharvest application of 1% chitosan nanoparticles (CSNPs) on maintaining the quality of damask rose flowers during storage at 4 or 20 °C. The results showed that both treatments were shown to help preserve the quality and extend the shelf life of damask rose. CSNPs were more effective than 1-MCP. Collectively, 1-MCP or CSNPs as eco-friendly applications are recommended as novel and promising approaches for the commercial industry for retaining the quality of damask rose during storage.Preserving the flower shelf life of damask rose is a crucial matter in promoting its economic viability. Chitosan nanoparticles (CSNPs) and 1-methylcyclopropene (1-MCP) may potentially decrease the postharvest loss of several horticultural commodities, but no findings on damask rose have been published. Therefore, the aim of this research was to study the effect of 1-MCP (400 mg m−3) and either the pre- or postharvest application of CSNPs (1%) on maintaining the quality of damask rose flowers during storage at 4 or 20 °C. The shelf life of damask rose has been significantly extended, along with a reduction in weight loss due to 1-MCP, CSNPs and pre-CSNP treatments. 1-MCP or CSNP applications have resulted in a higher relative water content, volatile oil, total anthocyanins, total carotenoids, total phenolics and antioxidant activity. Ethylene evolution, H2O2 generation and malondialdehyde content were significantly decreased due to 1-MCP or CSNPs treatment, and hence, the cell membrane functions have been maintained. The 1-MCP or CSNP-treated flowers have shown higher activities of catalase and ascorbate peroxidase and lower activities of polyphenol oxidase and lipoxygenase in comparison to untreated flowers. Our results showed that the postharvest application of 1-MCP or CSNPs is a very promising method to maintain the postharvest quality of damask rose during storage.
Highlights
Damask rose (Rosa damascena Mill.) is the most important aromatic plant belonging to the Rosaceae family
The minimum weight loss was observed by applying Chitosan nanoparticles (CSNPs) as control flowers, which lost 2.47- and 4.46-fold of their fresh weight compared to those values obtained by the CSNP treatment at 4 and 20 ◦C, respectively
Our results showed that 1-MCP and the CSNPs preserved the volatile oil content during the storage of damask rose flowers
Summary
Damask rose (Rosa damascena Mill.) is the most important aromatic plant belonging to the Rosaceae family This family includes more than 200 species of the Rosa genus that are widely distributed in Europe, Asia, North America and the Middle East [1]. The flower yield, chemical compositions and final quality of the extracted oil are mainly affected by the environmental conditions, cultural and production practices and storage temperatures [4]. Flowers are generally exposed to oxidative stress caused by mechanical damages during harvest and handling [7] It is well-known that oxidative stress is mediated by the generation of reactive oxygen species (ROS), which are involved in the cell deterioration process [8]. Preserving the flower quality after harvest until extraction is a crucial step in the production of the volatile oil of damask rose. It is imperative to find alternative approaches to preserve the quality of damask rose flowers until oil extraction
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