WO2014110936A1 - Periplaneta americana extract ...
Disclosed are a Periplaneta americana extract and the preparation method therefor. The method uses acetone for reflux and water for extraction. The resulting extract is concentrated, to which ethanol is added, then ethanol is recovered to obtain a filtrate. The filtrate is then processed through an adsorption resin column, and the effluent liquid is collected until the ninhydrin reaction is ...
Get Price