Exploring microencapsulation potential: Multicomponent spray dried delivery systems for improvement of Chlorella vulgaris extract preservation and solubility

The potential of Lutein-rich extract from Chlorella vulgaris (CHL) as a health product ingredient is hindered by stability and solubility issues. We propose a method to produce a stable microparticulate powder using spray- drying and a multicomponent carrier consisting of modified starch (OSA-MS), low molecular weight Inulin, and Lecithin. The influence of matrix selection, spray drying, and storage conditions on powder properties and chemical-physical stability was investigated. The resulting powder exhibited improved flow characteristics, wettability, and enhanced water dissolution rate of CHL. After 12 months of storage, the powder (PURIL-CHL) retained approximately 65 % of Lutein, twice the retention of the raw extract. The properties of the spray-dried powder were well-preserved, and bioactive dissolution remained above 80%. This study provides an approach to upgrade Lutein-rich CHL extract in powder form, suitable for various applications in the health products industry.