Fiber content of the dried biomass was determined by removing
fat from it as described above and then by boiling consecutively
with 1.25% (w/v) H2S04 and 1.25% (w/v) NaOH solution (AOAC,
1984). The residue was washed thrice with water followed by
ethyl alcohol and dried to a constant weight. The value was corrected
for ash content of the sample.