Different mordants were used in 2e4% keeping in mind the
toxicity factor of some mordants particularly copper and chromium.
Varied hues of color were obtained from pre-mordanted
cotton, silk fabrics and wool yarn with FeSO4, SnCl2, CuSO4,
SnCl4, K2Cr2O7 and alum when dyed by aqueous extract of
H. mutabilis. As shown in Table 1, the different mordants
not only cause difference in hue color and significant changes
in K/S values but also changes in L* values and brightness index
values.