The dehydration tests were conducted at three drying methods to evaluate the drying curves and the energy uptake. Apple (Malus domestica L.) cubes were dried under different processing conditions applying freeze drying (FD), freeze drying assisted by hot air and freeze drying assisted by infrared radiation. Control samples were produced using regular freeze drying without the pre-drying. Hot ai...

Luostarinen, K. 2006. Effects of environmental and internal factors of trees and timber treatment on colour of dried birch (Betula pendula) wood. University of Joensuu, Faculty of Forestry. Wood of silver birch (Betula pendula) has good properties that lead to its extensive use in mechanical wood industries in Finland. However, a problem with sawn birch timber is the darkening of the wood durin...