(ii) SRT2, fed daily with ungelatinized
PPW at a SRT of 2 d for 10 d; (iii) SRT1.5G, fed daily
with gelatinized PPW at a SRT of 1.5 d for 14 d; (iv) SRT1G, fed
twice a day with gelatinized PPW at a SRT of 1 d for 8 d. The fermentation
broth was sampled and analyzed according to methods
described below. To ensure a steady state condition, only data
obtained after 5 cycles of each stage (at least 3 observations) were
processed and analyzed by SAS v9.3 software for the Tukey’s HSD
test at a probability level of p = 0.05