| | Method for dyeing strawberry - Patent 5310567 (Site not responding. Last check: 2007-10-22) |
 | | A method for dyeing strawberries comprises the steps of removing the cuticula layer of unripe strawberries, charging the strawberries in a container together with a dyeing solution containing the dyeing agent, degassing the contents of the container, then sealing the container and heating the sealed container. |
 | | In the present invention, the strawberries may be dyed with the foregoing dyeing agent or dyeing solution in any manner, but it is desirable to previously remove the cuticula layer present on the surface of the strawberries by dissolving out the same with a hot alkaline solution prior to the dyeing procedures. |
 | | The removal of the cuticula layer from the surface of the strawberries can be carried out by immersing the strawberries in an aqueous solution of sodium hydroxide having a concentration ranging from 1 to 6%, preferably 2 to 4% at a temperature ranging from 80.degree. |
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