THE MICROFLORA OF STORED WHEAT

Abstract

Wheat passing through the Winnipeg market in 1943 and 1945 harboured a large number of micro-organisms. They were not found on all kernels, but were present on all 10-gm. samples. The number was smallest on No. 1 Manitoba Northern red spring wheat and progressively larger on each successive lower grade.The organisms consisted chiefly of two species of bacteria, which persisted on the grain even after repeated vigorous washings. One was identified as Bacterium kerbicola aureum Duggeli. The other undoubtedly is a representative of the genus Pseudomonas. It is suggested that these species should be considered epiphytic on wheat.