Objective:To investigate change of physical

chemical properties and out-degree of Fermentation from cordyceps sinensis with different size.Method: To deal with Fermentation from cordyceps sinensis for superfine grinding using ultrafine grinding technology.Powders with different particle size were investigated bulk density

tap density

hygroscopicity

moisture content

mobility etc.Determined the content and dissolution by HPLC with adenosine as index.Result: To compare powder properties between common powder and micropowders of Fermentation from cordyceps sinensis

there was no significant change in angle of repose

increase heavy percentage of moisture absorption and content.The powder density becomes greater after superfine grinding.To some extent of superfine grinding

these ways help to dissolution of index component.But the dissolution of index component will be impeded by excessive superfine grinding.Conclusion: There was no significant change in physical and chemical properties around the superfine grinding of Fermentation from cordyceps sinensis.The effect of dissolution rate which superfine grinding in Fermentation from cordyceps sinensis.