goat skins were treated with 0.5% sodium bicarbonate for depickling
and than tanned by 1% D-Lysine and 2% Glutaraldehyde (GTA)
based on pickled weight, for 3 h until penetrated at pH 3.5e4.5 and
then the fixingwas carried out by the addition of 1% formic acid and
4% Basytan FB 6 in four instalments at an interval of 15 min with
little modification compared to our recent report (Krishnamoorthy
et al., 2012a).