3.4. Ethanol extract
The total phenolic contents of ethanolic extract from whole seeds
and hulls of green lentil were not significantly different from those of
the corresponding red lentil extract (Table 4); similar to those
described above with water extract. The differences were also not
significant in tartaric ester content between green and red lentils from
within the whole and hull extracts. However, the green lentil residue extract had significantly higher phenolic contents, except anthocyanins,
and antioxidant activity than those of the red lentil. Ethanolic
extract of lentil (both red and green) hulls contained over four times
the total phenolic content that was reflected in their five-fold
antioxidant activity compared to those from the whole seed.
Furthermore, differences in antioxidant activity between green and
red lentils were not significant within the whole seed and hull
millstreams. The yellow pea hull extract had the lowest total phenolic
and anthocyanin contents thereby expressing the weakest antioxidant
activity of all ethanol extracts. The antioxidant activity of the
yellow pea residue extract was significantly higher than those from
the whole seeds and hulls; this value was similar to those of the
acetone extract (Table 1).