On-farm blast freezing of Saskatoon berries
| dc.contributor.author | Stephenson, Neil | en_US |
| dc.date.accessioned | 2007-05-22T15:12:28Z | |
| dc.date.available | 2007-05-22T15:12:28Z | |
| dc.date.issued | 2001-03-01T00:00:00Z | en_US |
| dc.degree.discipline | Biosystems Engineering | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | Experiments were performed with individual saskatoon berries under controlled conditions to determine freezing characteristics. The air velocity, the temperature of the freezing air, and their interaction were statistically significant (P > 0.0001) on the time for saskatoon berry to drop in temperature from 0 to -10C. A 2.2 kW (3 hp) prototype freezer was designed and constructed on a saskatoon farm, and tested in the 1999 and 2000 harvest years. At the beginning of a harvest day, the temperature of the prototype freezer was below -20C, the initial temperature of berries entering the chamber was approximately 5C, and the berries reached a temperature of -10C within 1 h. At the end of a harvest day, the chamber temperature had risen to -12C, the initial temperature of the berries was between 15 and 20C, and the time for the berries to reach -10C was greater than 4 h. (Abstract shortened by UMI.) | en_US |
| dc.format.extent | 5128512 bytes | |
| dc.format.extent | 184 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.format.mimetype | text/plain | |
| dc.identifier.uri | http://hdl.handle.net/1993/1999 | |
| dc.language.iso | eng | en_US |
| dc.rights | open access | en_US |
| dc.title | On-farm blast freezing of Saskatoon berries | en_US |
| dc.type | master thesis | en_US |