The present invention describes a method of preparation of formulations of microcrystalline
lutein, particularly in the form of esters, which are resistant to oxidation and
are soluble in hydrophilic and/or lipophilic media. For these formulations, the
esters of lutein are mixed with antioxidants, vegetable oils and/or organic solvents,
and this initial mixture is submitted to various stages depending on the type of
final formulation required. These formulations are suitable for direct application
as colourants in the pharmaceutical, food and cosmetics fields. They can also be
used as diet supplements.