Preparation of a finely divided pulverous carotenoid...

Details Preparation of a finely divided pulverous carotenoid... Preparation of a finely divided pulverous carotenoid...

A - Human Necessities

23

L

99/8

A23L 1/27 (2006.01) A23L 1/275 (2006.01)

Patent

CA 2261456

The present invention relates to a continous process for the preparation of a pulverous carotenoid, retinoid or natural colourant preparation, wherein the active ingredient is finely divided, which process comprises the steps of a) forming a suspension of the active ingredient in a water-inmiscible organic solvent optionally containing an antioxidant and/or an oil, b) feeding the suspension of step a) to a heat exchanger and heating said suspension to 100-250°C, whereby the residence time in the heat exchanger is less than 5 sec, c) rapidly mixing the solution of step b) at a temperature in the range of 20-100°C with an aqueous solution of a swellable colloid optionally containing a stabilizer, d) removing the organic solvent and e) converting the dispersion of step d) into a pulverous preparation.

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