Postharvest Treatments of Different Doses of Calcium Lactate in Combination with Chitosan Improves Biochemical Characters of Cucumis sativus L. during Storage

Vedat Yılmaz, Rezzan KASIM, Mehmet Ufuk KASIM


This study aimed to determine the effects of the postharvest coating created with different doses of calcium compounds and chitosan on the quality of the cucumbers during storage. For this purpose, cucumber fruits were dipped into solutions containing the doses of 2, 4, and 6% calcium chloride (CaCl2), calcium propionate (C6H10CaO4), and calcium lactate (C6H10CaO6) + 1.0% chitosan separately before storage. After the treatments, the cucumber fruits were dried and placed in boxes with plastic lids and stored at 7±1oC and 90-95% relative humidity for 20 days. Calcium change in fruits, flesh firmness (N), weight loss (%), fruit skin color (L*, a*, b*, hue angle, yellowness index), chlorophyll SPAD amount, total soluble solids (TSS), titratable acid (%), taste quality, electrolyte leakage (%), decay rate  (%) observations and analyzes were evaluated at five-day intervals during storage. According to the results, it was found that especially the dose of 2% calcium lactate was more effective in preserving fruit firmness and green color, increasing the amount of TSS, and also delaying the decay, amongst calcium chloride, calcium propionate, and calcium lactate treatments. The KT and CaP4 treatments were successful in reducing weight loss, whereas CaL4 and CaL6 were found to be effective in maintaining chlorophyll content. Also, it observed that CaK4 and CaK6 treatments were increased electrolyte leakage due to causing damage to the cell wall, thus the shortened storage time of cucumber fruits in this study.


Cucumber, Calcium, Chitosan, Postharvest, Quality, Storage

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