A method for the production of nano - dispersed high - all - trans - carotenoid - microcapsules

摘要

The present invention discloses a process for the preparation of nano - dispersed high - all - trans - carotenoid - microcapsules, in which high - all - trans - carotenoid - crystals, together with dichloromethane, by knives to a crystal size of 2 – 5 μm are ground up, in order to provide a 10 – 20% - carotenoid - suspension liquid preparing. The relevant suspension liquid, in a different route is preheated dichloromethane in a solution reactor and to a 0,5 – 2% - solvent liquid is released. The above-mentioned solvent with alcohol or isopropanol is simultaneously and continuously over a difficult to force - crystal deposition in front of the direction with a rotating fixed bed and subsequently fed in a thin film evaporator, up to a solids content of 10 – 20% released from solution. In this way, a transparent carotenoid - alcohol - dispersion liquid obtain. The corresponding alcohol - dispersion liquid is water solution containing antioxidant, and protective colloid are mixed, and dried atomized. In this way, nano - dispersed high - all - trans - carotenoid - microcapsules obtained. Because the nano - dispersed high - all - trans - carotenoid - microcapsules crystals contained nano - are dispersed and the content of trans - isomers of over 90%, the biological availability is extremely high.