Abstract
The fruits of Citrus Sudachi Hort. ex Shirai were harvested from the same tree between September 5 and November 7 at 3 weeks' intervals. “Sudachi” fruits packed in polyethylene bags under nitrogen gas were stored at 25°C.
Ascorbic acid and chlorophyll in fruit were analyzed at 2 weeks' intervals. As for whole green fruits harvested on September 5 or partially yellow fruits on September 26, content of ascorbic acid did not increase. Whereas, content of ascorbic acid increased to 180% after 8 weeks' storage of partially green fruits harvested on October 17, and increased to 152% after only 4 weeks' storage of whole yellow fruits on November 7. It was found from these results that yellow fruit was suitable for the study of ascorbic acid increasing in nitrogen gas.
