Method of separating components in a sample using silane-treated silica filter media

   
   

The present invention provides methods for separating one or more components of interest from a sample containing particulates and soluble materials. The method comprises the steps of: (a) filtering a sample through silica filter media whose surface silanol groups have reacted with one or more silanes, and (b) simultaneously capturing particulates and binding a soluble component to the silica filter media. The bound soluble component of interest is subsequently eluted from the silica filter media. In one embodiment of the invention, unwanted soluble materials are captured by the treated silica filter media and desired component of interest is recovered from the flow-through. In another embodiment of the invention, different components of interest are recovered from both the eluate and the flow-through. Preferred treated silica filter media are silane-treated rice hull ash or diatomaceous earth with functional quaternary ammonium group or functional sulphonate group. Particulates suitable for the present invention, for example, are microorganisms.

La actual invención proporciona los métodos para separar unos o más componentes del interés de una muestra que contiene particulates y los materiales solubles. El método abarca los pasos de: (a) filtrando una muestra con los medios del filtro de la silicona que silanol superficial agrupa ha reaccionado con unos o más silanes, y (b) simultáneamente capturando particulates y el atascamiento un componente soluble a los medios del filtro de la silicona. El componente soluble encuadernado del interés se enjuaga posteriormente de los medios del filtro de la silicona. En una encarnación de la invención, los materiales solubles indeseados son capturados por los medios tratados del filtro de la silicona y el componente deseado del interés se recupera de fluir-por. En otra encarnación de la invención, diversos componentes del interés se recuperan del eluate y fluir-por. Los medios tratados preferidos del filtro de la silicona son ceniza del casco del arroz o tierra diatomaceous silane-tratada con el grupo funcional del amonio de cuaternario o grupo funcional del sulphonate. Los particulates convenientes para la actual invención, por ejemplo, son microorganismos.

 
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