Abstract

Thrity-six barley cultivars were analyzed for relative nutritive value, using the fungusAspergillus flavus. The protein content ranged from 7.8 to 14.7% and dye-binding capacity (DBC) ranged between 180 to 260. When additional glucose was not supplied in the medium containing barley samples at equal nitrogen level the biomass was low (76.3 mg average) and the correlation between the biomass and protein % and DBC were r=−0.97** and −0.65** respectively. When additional glucose was provided, theAspergillus biomass increased significantly (114.5 mg average) but the correlation between the biomass and protein % or DBC was reduced. When extra glucose was supplied at the start of the experiment, some native starch was left unutilized and this was avoided by incorporating glucose 43 h after the start of the experiment. In such experiments the biomass improved significantly in some samples and a better correlation between the biomass and protein % and DBC was noticed (r=−0.70** and −0.53**) respectively.

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