ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Effects of cropping season and storage temperature on quality changes of cabbage during short-term storage.

Mukasa, Y. and Hakoyama, S.

Research Bulletin of the Hokkaido National Agricultural Experiment Station. 173; 2001. Page 63-72.

2001

บทคัดย่อ

Postharvest changes in quality of cabbage cv. Kinkei 201 cultivated in different 3 cropping seasons of 1995 were studied for 21 days under 20 deg C, dark, 95% relative humidity storage condition (non-cooled), in comparison with under 4<Degrees>C, dark, 95% relative humidity (refrigeratory). During the storage, vitamin C content of cabbage increased steadily under 4 deg C condition, but fluctuated under 20 deg C. Nitrate content fluctuated over the storage period under both temperature conditions. Reducing sugar content decreased and nonreducing sugar content increased over the storage period, however, total sugar content fluctuated under both temperature conditions. Although changes in vitamin C, nitrate and sugar content were quantitatively small over the storage period, the contents were considerably affected by the cropping seasons. In vitamin C content and nitrate content, 1.5-fold and 5-fold differences were observed, respectively, between cropping seasons and significant differences could be seen in total dietary fibre content and sugar content. The colour of outer head leaves affected by chlorophyll content rapidly changed after the 8th day of storage under 20 deg C, although it was almost unchaged under 4 deg C.