Procedure for the preparation of essentially pure lutein from marigold extracts. (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the preparation of essentially pure lutein from marigold extracts. A process for the preparation of essentially pure lutein from extracts of marigold (tagetes erecta l.) characterized by the following steps is described: A) treatment of the extract with an ester of a short-chain organic acid and, therefore, of a low boiling point, selected from methyl, ethyl or propyl acetate, or methyl formate, ethyl or propyl or a mixture of them, b) saponification of the product thus obtained by the action of alkaline reagents, such as the oxides and/or hydroxides of alkali and alkaline earth metals, in organic or aqueous-organic medium and in the presence of antioxidants, c ) partial neutralization by addition of organic or inorganic acids and subsequent treatment with apolar solvents, such as alkanes, cycloalkanes or similar, d) elimination of the solvents and drying, whereby lutein with a purity between 88% and 97 is obtained % and even higher suitable for human consumption. The product obtained is useful as an additive in the diet. (Machine-translation by Google Translate, not legally binding)