Cereal Chem 62:31-34   |  VIEW ARTICLE
Influence of Water Activity and Temperature on Dehulling of Buckwheat.

G. Mazza and C. G. Campbell. Copyright 1985 by the American Association of Cereal Chemists, Inc. 

Dehulling and moisture sorption characteristics of three buckwheat cultivars were determined at water activities of 0.11-0.98 and at 1, 10, 25, and 40 C. The dehulling recovery varied among cultivars and water activities of the seed. Of the three cultivars, Mancan yielded the most groats and CM 169 yielded the least. The dehulling yield of each cultivar decreased as the water activity of the seed increased but was essentially unaffected by temperature. The amount of whole groats in the dehulled fraction was constant at water activities of 0.11-0.50 but more than doubled as the water activity was increased from 0.50 to 0.98. The optimum water activity for minimizing the rate of degradation of buckwheat seed during storage and for maximizing the dehulling yield and percentage of whole groats was approximately 0.18.