The Changes of Postharvest Quality in Thai Pomelo Fruits Stored at Room Temperature

Key words: 
• Thai pomelo /
• storage at room temperature /
• fruit quality /

Abstract: Thai pomelo（ Citrus maxima）,a pomelo cultivar,is one of the famous fruits produced in Hainan.Thai pomelo fruits produced in Chengmai,Hainan were harvested and stored for different days at the room temperature（ 25 ℃） to observe their changes in some parameters such as weight,weight loss rate,edible rate,soluble solids,etc. so as to provide reference for postharvest handling and storage of Thai pomelo at the room temperature. The results showed that the pomelo fruit stored at the room temperature decreased weight and increased weight loss rate but not significantly in the days 28-42 of storage. The edible rate of the fruit in storage was the highest at the day 28 of storage and decreased in the days 28-42 but not significantly. Soluble solids content increased significantly in the days 0-28 but not significantly in the days 28-42. Soluble total sugar and non-reducing sugar contents increased significantly with a maximum rate in the days 28-42. The reducing sugar content increased significantly in the days 0-14,and then showed a fluctuated change but not significantly. The titrable acid content increased significantly in the days 14-42; the soluble solids content/titrable acid ratio increased significantly in the days 28-42 with a rapid rate. Vitamin C content increased significantly in the days 0-28,and then increased but not significantly in the days 28-42. It is concluded that the Thai pomelo fruits are optimum in quality when stored for 28-42 days at the room temperature.