 The study investigated the effect of alginate treatments with or without salicylic and oxalic acid as post-harvest coating on extending the post-harvest life of plums, maintaining their quality and reducing weight loss, soluble solids content, titratable acidity, firmness, respiration rate, ascorbic acid content, total anthocyanin content, total phenolic content, and antioxidant activity. The results showed that alginate coating with salicylic acid was effective in maintaining higher quality of fruits and level of bioactive compounds than other coating treatments during 40 days of storage at 0 to 1 degree Celsius. This article was authored by Erting Ball.