open access

https://hdl.handle.net/2115/71303

Development and Extension of Techniques for Super-Low-Temperature Storage of Rough Rice Using Fresh Chilly Air in Winter

日本語

Super-low-temperature storage

2003

低温生物工学会

Cryobiology and Cryotechnology

49(2)

119-124

The objective of this project was to develop new on-farm rice storage techniques at a temperature below ice point, known as super-low-temperature storage, using fresh chilly air in winter. Two on-farm storage experiments were conducted in two country elevators in Hokkaido from 1996 to 2000. When rough rice was aerated from the bottom to the top of the silo in winter, the temperature of whole rice grains in the silo fell below ice point. At the end of the storage period in summer, the temperature of rice grains in the center of the silo was still below ice point, whereas the temperature of rice grains near the silo wall increased to about 20℃. However, there was no deterioration in the quality of rice grains near the silo wall. The quality of rice stored in the silo was preserved at a level similar to that of freshly harvested rice. The combination of rice storage at a temperature below ice point and utilization of fresh chilly air in winter enables the quality of rice to be preserved at a high level without the requirement of any cooling unit and electricity. The use of new techniques for super-low-temperature storage in cold regions of Japan has been increasing in recent years. In Hokkaido, 23 country elevators have been constructed since 1996. The total storage capacity of rough rice in Hokkaido has been increasing in recent years and reached 104,000 t in 2002.

学術雑誌論文

Version of Record

© 2003 Japanese Society of Cryobiology and Cryotechnology

1340-7902

2424-1555