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Abstract

There is provided a method of drying a biological material, comprising the steps of: a) generating a flow of microdroplets of the biological material having a dry matter content below 25% (weight/volume); b) contacting the microdroplets with a gas flow, wherein the ratio of the gas flow to the flow of microdroplets is at least 300.000:1, preferably at least 600.000:1, more preferably at least 800.000:1, thereby drying the biological material to form particles; c) separating the particles from the gas flow; d) drying the gas flow from step c); and e) recirculating the dried gas flow from step d) to step b). A corresponding apparatus is also provided.

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First Claim