FIELD: food industry and technology. SUBSTANCE: method involves preparing vegetable raw, its grinding and drying, thermal treatment in air atmosphere, extraction of coloring substances with heated ethyl alcohol and concentrating extract by solvent distilling off under vacuum. Thermal treatment of carotinoid-containing raw is carried out by step-gradient method successively at temperature 40, 60, 80 and 90 C with keeping for 2 h in each case. Invention provides preparing a dye with reduced energy consumptions under conditions promoting to the enhancement of safety of beta-carotene in raw and in minimal formation of melinoidins as secondary pigments. EFFECT: improved preparing method. 1 tbl, 3 ex
| Title | Year | Author | Number |
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| METHOD OF OBTAINING NATURAL MIXED CAROTINOID-ANTHOCYANINE DYE | 2012 |
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SU1806154A3 |
