COATED PARTICLES

Abstract

The present patent application relates to novel red-orange coated particles, which are mainly used in (dry) formulations for instant beverages. The advantage of these coated particles is that they are red to orange as such (also in the formulations for instant beverages, wherein they can be identified by the naked eye as individual discrete coloured particles), but upon dissolution of the instant beverage powder these particles will dissolve as well and will not interfere with or change the intended color of the ready-to drink instant beverages made from the instant beverage dry powders.

Claims

1. Use of the red-orange coloured dry particles having (a) a core and (b) a coating layer, which comprises 0.1 wt-% to 30 wt-%, based on the total weight of the coating layer, of -carotene, wherein the -carotene of the coating layer has A.sub.1/1 value of up to 200, in an instant beverage powder.

2. Use according to claim 1, wherein the particles have a size of 50-1000 m.

3. Use according to claim 1, wherein the particles have a size of 100-900 m.

4. Use according to claim 1, wherein the solid red-orange coloured dry particles consist of (a) 60-99 wt-%, based on the total weight of the solid red-orange coloured dry particles, of core and (b) 1-40 wt-%, based on the total weight of the solid red-orange dry particles, of coating layer.

5. An instant beverage powder comprising the solid red-orange coloured dry particles having (a) a core and (b) a coating layer, which comprises 0.1 wt-% to 30 wt-%, based on the total weight of the coating layer, of -carotene, wherein the -carotene of the coating layer has A.sub.1/1 value of up to 200, in an instant beverage powder.

6. Instant beverage powder according to claim 5, wherein the particles have a size of 50-1000 m.

7. Instant beverage powder according to claim 5, wherein the particles have a size of 100-900 m.

8. Red-orange coloured dry particles having (a) a core and (b) a coating layer, which comprises 0.1 wt-% to 30 wt-%, based on the total weight of the coating layer, of -carotene, wherein the -carotene of the coating layer has A.sub.1/1 value of up to 200.

9. Red-orange coloured dry particles to claim 8, wherein the particles have a size of 50-1000 m.

10. Red-orange coloured dry particles to claim 8, wherein the particles have a size of 100-900 m.

11. Red-orange coloured dry particles to claim 8, wherein the solid red-orange coloured dry particles consist of (a) 60-99 wt-%, based on the total weight of the solid red-orange coloured dry particles, of core and (b) 1-40 wt-%, based on the total weight of the solid red-orange dry particles, of coating layer.

12. Process for the production of the coated particle according to claim 8, wherein is a first step the A.sub.1/1 value of the -carotene formulation (used to form the coating layer) is determined by weighting 220 mg of the -carotene in a 100 ml volumetric flask, adding 50 ml of distilled water at 50 C., and treating the solution with ultrasonic; afterward cooling the volumetric flask under cold running water and bringing to volume with distilled water; afterwards subdilute 10.00 ml of this suspension to 100.00 ml with distilled water; then measuring the absorbance with a spectrophotometer in a 1 cm cell at 492-496 nm (measure the maximum) against distilled water as a blank and then calculating the A.sub.1/1 value by the following formula $A\left(1.Math.\%,.Math.1.Math..Math.\mathrm{cm}\right)=\frac{A_{\max }1.Math.0}{B},$ wherein B is the initial weight of the -carotene (in gram).

13. Process according to claim 12, wherein the -carotene, which has a A.sub.1/1 value of less than 200 is used to coat the core material.

14. Process according to claim 13, wherein the core material is coated with an aqueous solution, which comprises all the ingredients of the coating layer (-carotene and optionally at least one active compound and optionally at least one auxiliary compound) by spray coating technology.

15. Process according to claim 14, wherein fluid-bed coating or drum coating is used to produce the coated particles.

Description

EXAMPLE 1: PRODUCTION OF THE PARTICLES

[0089] 3.74 g L-Carnitine, 0.17 g Taurine and 1.33 g of a -Carotene formulation containing 15% -carotene (A(1%, 1 cm) at the maximum max 25) were dissolved in 50 g water. The solution was sprayed on 200 g crystal sugar in a lab-scale fluid-bed processor with Wurster technology at a product temperature of 60 C. After spraying the product was dried at 60 C. 165 g of red powder particles were obtained.

EXAMPLE 2: APPLICATION (IN BEVERAGES)

[0090] 1 g of the powder described above are mixed with 99 g of a commercial instant beverage powder. The red powder is clearly visible as red spots in the mixture. 60 g of the mixture are dissolved in 250 g water. A turbid solution is obtained. No color shift is observed compared to a solution of instant beverage powder without added red particles.