Studies of Salicylic Acid and Chitosan on Storage Ability of “Solar Eclipse” Plum Fruits

Samra,, N. R.; Eleryan, Eman E.; Omar, Asmaa S. M.; Abd El-Nabi, Engy

doi:10.21608/jpp.2025.415168.1501

Studies of Salicylic Acid and Chitosan on Storage Ability of “Solar Eclipse” Plum Fruits

Document Type : Original Article

Authors

¹ Pomology Department, Faculty of Agriculture, Mansoura University, Egypt

² Horticulture Research Institute, Agricultural Research Center, El-Giza, Egypt

10.21608/jpp.2025.415168.1501

Abstract

This study evaluated the effects of postharvest treatments with salicylic acid and chitosan at different concentrations on the quality of “Solar Eclipse” plum fruits during storage. The experiment was conducted over two seasons (2024–2025) using trees grown under sandy soil and drip irrigation systems, involved five treatments: salicylic acid at (0.5% and 1.0%), chitosan at (1.0% and 2.0%), and the control. Fruits were stored at 4 ± 1°C with 90–95% relative humidity and assessed after 15 and 30 days of cold storage and a subsequent three days as a shelf life at room temperature to assess the changes in physio-chemical properties under ambient conditions. All studied treatments significantly affected weight loss, maintained firmness, soluble solids content and anthocyanin content. All applied treatments reduced the loss in fruit weight than the control. Since, the percentage of loss in fruit weight of the untreated fruits was (6.50% and 5.21%) after 30 days of cold storage. Yet, dipping Solar Eclipse plum fruits in salicylic acid at 1.0% significantly reduced the loss in fruit weight since it ranged about (4.91% and 4.77%) after 30 days under cold storage during the two seasons. Also, dipping the fruits in chitosan at 1% or 2% presented a lower value than the untreated ones. Chitosan and salicylic positively affected the most quality traits.

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