| Budget Amount *help |
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1987: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1986: ¥1,300,000 (Direct Cost: ¥1,300,000)
|
|---|
| Research Abstract |
Effect of curing conditions on the physiological changes of several varieties of citrus fruits including ponkan mandarin cv. Ota, iyo cv. Miyauchi, navel orange cv.Morita hassaku, natsudaidai cv. Kawano, sanbokan, murcott, seminole, minneola and inshi-kan cv. Ryuto was investigated statistically to elucidate the best condition for improvement of fruit quality during long term storage at low temperature. The fruits were cured at 1゜, 5゜, 10゜, 15゜,20゜ and 24゜C under two different humidities immediately after harvest and transfered to a cold room at 5゜<plus-minus>0.5゜C and 85<plus-minus>5% . :
The following results were summarized.
1. Respiratory rate of the fruits in all varieties was inhibited significantly during curing at 20゜C under low humidity.
2. The fruits cured under a suitable condition tented to show a less weight loss during long term storage at 5゜C.
3. Temperature during curing affected the peel colour of some varieties of citrus fruits. Curing at 15゜C resulted the best peel colour of iyo, navel orange and natsudaidai at the end of storage.
4. Acidity and brix in the fruits were also affected by the temperature during curing. The fruits cured at higher temperature were able to retain a high rate of brix and high content of acidity than the fruit cured at low temperature.
|
