Single-step coprecipitation and coating to prepare curcumin formulations by supercritical fluid technology

•The SAS process was combined with two configurations of fluidized beds.•Properties of fluidization in tapered beds and stirred vessels were discussed.•Curcumin/PVP coprecipitates were produced and coated on different carrier particles.•Curcumin release and flow properties were enhanced in a single-step process.