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°®ÓëÓêÏÂ(½ð±Ò+1): 2011-11-04 14:17:47
°®ÓëÓêÏÂ(½ð±Ò+40): bb´ú·¢ 2011-11-10 08:50:15
1.5 Immobilization of lipase.
Via single factor comparison test, compare and exam Ag-MAC produced by different concentrations of AgNO3 and optimize test on pH environment and time of immobilization.
Select 20mL of enzyme solution (2mg/mL) and 40mg of Ag-MAC and add them to 50mL round centrifuge tube. Immobilize enzyme is processed by mixed solution under condition of 25C and 215rpm. After mixture reacting for certain time, take it out and centrifuge for 10min under 10C and 6000rpm. Test protein contents in nascent by coomassie blue staining. The reduced amount of protein in nascent is amount immobilized protein and the ratio of immobilized protein and carrier can be obtained by following formula.
In formula, Pa is amount of immobilized enzyme protein on unit carrier (mg/g), Ci and Cf are concentrations of solution before and after reaction (mg/mL), V is reacted solution volume (mL), W is mass of used carrier (mg).
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