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  • Title: Investigation of the effects of melatonin application on storage in plums (Prunus domestica L.) grown under organic and conventional conditions.
    Author: Karadag H.
    Journal: BMC Plant Biol; 2024 Sep 07; 24(1):841. PubMed ID: 39243060.
    Abstract:
    This study was carried out to investigate the effects of melatonin applications on postharvest quality changes of organic and conventionally grown plum fruit. Melatonin was applied in 0, 50, and 100 µmol L- 1 for organic and conventional samples. The fruits were stored at + 2.0 °C and 90% relative humidity for 28 days. During the storage period, the color, weight loss, firmness, Soluble solids concentration (SSC), titratable acidity (TA), pH, total antioxidant content, and total phenolics were evaluated at 7-day intervals. While no effect of melatonin applications on weight loss of organically grown plums was observed, it was determined that weight loss decreased as the dose of melatonin increased in conventionally grown plums. The lowest weight loss during storage was determined in conventionally grown plums treated with 100 µmolL- 1 melatonin. It was observed that the firmness values decreased as the storage period increased in both cultivation methods. The firmness decreased as the dose of melatonin application increased in organically grown plums, while the firmness increased as the dose of melatonin application increased in conventional cultivation. Melatonin application did not positively affect SSC, pH, and color values. However, it was determined that the mean TA values decreased as the dose of melatonin increased in both cultivation methods. When the total phenol content of organic and conventional plums was examined, it was determined that melatonin application decreased the number of phenolic compounds. The highest phenolic content was determined in the control samples. The total amount of antioxidants was 1.71 µmol TE g- 1 on the 28th day in the highest (100 µmol L- 1) melatonin-treated conventionally grown plums.
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