TY - BOOK AU - Rasha Mahmoud Kandeel 162079 TI - Post-harvest chilling injury of citrus fruit = الإصابة بالبرودة بعد حصاد ثمار الحمضيات \\ GP \\ Dr. Gehan Safwat \\ Dr. Gehan Ahmed \\ ( Fall 2019 ) PY - 2019/// CY - Giza PB - MSA KW - citrus fruit. N2 - Around 162,000 ha of oranges were planted within 2018/2019 in Egypt, which has increased by 5.1% from the previous year. However, only 148,850 ha were harvested. Prolonged storage at low, non-freezing temperatures to maintain quality is the main cause of post-harvest chilling injury of citrus fruits. As an overall symptom, the fruit with a chilling injury will appear decayed and abnormally ripe. The application of salicylic acid and hot water dips significantly reduces injury caused by chilling. This study aims to test the efficiency of both methods on ‘Valencia’ orange fruits during cold storage at 5°C. Salicylic acid with a 3 mM concentration had an optimum reduction of decay percentage. The hot water dips at 50°C was optimum in reducing peroxidase activity, at 45°C was optimum in reducing the chilling injury index, at 55°C was optimum on reducing the weight loss percentage. Both methods showed similar effects of reducing the effect of polyphenol oxidase, pectinase and the total soluble pectin. UR - https://drive.google.com/drive/u/2/folders/1z2J8Y6a-K-G-2bHDK_iaQfYdqd7HmLfo ER -