The influence of the physical and chemical
composition of corn distillers dried grains with solubles on
its flowability was evaluated in the current study. The samples
were evaluated for angle of repose, compressibility, Hausner
ratio, tapped density, bulk density, mean bulk density, colour and
nutrient content. PROC CORR and REG procedures were used
to determine correlations. The ether extract was negatively correlated
with crude protein and redness (a*), while crude protein
was negatively correlated with yellowness (b*). Acid detergent
fibre and neutral detergent fibre were negatively correlated with
a* and positively correlated with lightness (L*), respectively.
Compressibility showed a negative correlation with bulk density.
Bulk density, tapped density and mean bulk density did not impact
the angle of repose. The angle of repose was positively correlated
with the compressibility and Hausner ratio. Apart from the correlation
between acid detergent fibre and tapped density, the angle
of repose and other physical parameters were not affected by the
nutrient composition of the distillers dried grains with solubles
samples. In conclusion, the results of this study indicate that
nutrient composition has little influence over the flowability of
distillers dried grains with solubles but compressibility and the
Hausner ratio can be used to predict the potential flow characteristics
of corn distillers dried grains with solubles.
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