Linking Pre-Harvest Management to Storage Quality in Table Grape: A Variety-Based Approach

Abstract

In this study, the effects of pre-harvest 6 and 9 mM cyanocobalamin (CC), 0.5% and 1% chitosan (C) applications on the storage and grape quality characteristics of Red Globe and Tilki Kuyruğu table grape varieties were tried to be determined. It has been determined that pre-harvest applications of 0.5% and 1% chitosan with modified atmosphere packaging (MAP) and SO₂ generators in the Red Globe variety preserve both physical, biochemical, and sensory properties, delay spoilage, and the variety can be easily stored along 120 days. Among all parameters examined, it can be said that the applications had a negative effect on berry removal force. When the data of the Tilki Kuyruğu variety is evaluated, pre-harvest 0.5% C, and 1% C applications can be recommended due to their positive effects on weight loss (day 120 0.5% C: 1.92 % 2021, 1.40% 2022; 1% C: 1.48 % 2021, 1.84 % 2022, berry removal force (day 120 0.5% C: 394.8 gf 2021, 485.3 gf 2022; 1% C: 380.0 gf 2021, 482.1 gf 2022), and sensory properties. It is believed that conducting more detailed conservation studies on the Tilki Kuyruğu variety in future studies would be beneficial for identifying the variety and assessing its performance. The study yielded positive results, but it is necessary to determine the practical application methods and any potential adverse effects/challenges (phytotoxicity on leaves, etc.) arising from these applications.