STABLE DRY POWDER COMPOSITION COMPRISING BIOLOGICALLY ACTIVE MICROORGANISMS AND/OR BIOACTIVE MATERIALS AND METHODS OF MAKING

摘要

The present invention relates to embedding live or dead microorganisms and/or bioactive materials in a protective dry formulation matrix, wherein the formulation includes the bioactive microorganism or material, a formulation stabilizer agent, and a protective agent. The formulation is prepared by dispersing all the solid components in a solution, with or without a vacuum, and cooling the solution to a temperature above its freezing temperature. The methods include a primary drying step of the formulation at a desired temperature and time period, and an accelerated secondary drying step under maximum vacuum and elevated temperature, to achieve a final desirable water activity of the dry material.