Inventors: Yang T, Wu YL, Lv Y, Ye YF
Patent Title: Preparation method and application of ractopamine molecularly-imprinted materials
Publication date: 2012
Publication number: CN102580702

Abstract: The invention discloses a preparation method of ractopamine molecularly-imprinted materials, and is characterized by comprising the following steps: (1) the activation of silica gel: weighing silica gel, and carrying out backflow activation on the silica gel by using an acidic aqueous solution; (2) the double-bond bonding of the silica gel: after the activated silica gel and a double-bond containing silane coupling agent are heated, and carrying out a reaction on the two; (3) the surface chemical grafting of the silicon gel: putting the silica gel into a polyethylenimine aqueous solution to carry out a heating reaction to obtain an adsorbing material; and (4) product preparation: adding the adsorbing material into a ractopamine aqueous solution, adjusting the system pH value of the obtained mixture to an alkaline value, adding a crosslinking agent in the alkaline mixture, and carrying out a heating reaction on the alkaline mixture; and after the heating reaction is completed, washing off template molecule ractopamine, and drying the obtained object so as to obtain a ractopamine molecularly-imprinted material. Compared with the prior art, the preparation method disclosed by the invention has the advantages that the method is simple in preparation process, strong in maneuverability and low in preparation cost; and the prepared molecularly-imprinted material is good in specificity, short in adsorption equilibrium time to ractopamine, short in elution time and good in elution effect.
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