indicating high transparency. The addition of commercial b-carotene
gave rise to a significant increase in film opacity (p 0.05), and
the same effect was observed for T_E and S_E films, in which the
opacity index was even higher (p 0.05). The results for opacity are
in agreement with those for lightness; the control film showed the
highest lightness, followed by BeC, T_E, and S_E films (p 0.05),
respectively. The increase in opacity, and the decrease in lightness,
may be attributed to a light-scattering effect of the emulsified lipid
extracts/carotenoids, as suggested by