The Ethanol and SO2 Applications in the Postharvest Storage of “Köhnü” Table Grape


Uğur Y. , Özkan N., Yaman R., İyigün Şahin Ö., Özkaya O.

International Biological, Agricultural & Life Science Congress, Lviv, Ukraine, 7 - 08 November 2019, pp.35

  • Publication Type: Conference Paper / Summary Text
  • City: Lviv
  • Country: Ukraine
  • Page Numbers: pp.35

Abstract

Decay, caused by Botrytis cinerea Pers., is the major problem of table grapes during cold storage. Preharvest and postharvest applications are compulsory to avoid significant losses. Therefore, in this study, the efficacy of applying ethanol and SO2 gas generators to prevent storage decay was tested on cultivar of table grape, ‘Köhnü'. Ethanol release pads and SO’ gas generators were placed above the grapes in the modified atmosphere package. The grapes were stored for 120 days at 0±1 °C and determined after an additional 3 days at 20°C to shelf life. Samples were taken periodically and investigated physical [soluble solid content (SSC), pH, weight loss, berry colour, stem dry (%), separated rate, skeleton of cluster dry and decay rate (%)], chemical [titratable acidity, maturity index, phenolic compounds] changes, sensory analysis and microorganism population. Results showed that ethanol release pads treatments significantly decreased weight losses. Changes of the decay, skeleton of cluster dry and stem dry of the grapes with ethanol release pads were delayed