User:Samiye Yaman/Notebook/Lab 571/2011/09/07

Biomaterials Design Lab

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Entry title Objective Description Procedure was this experiment was similar to the experiment done on the 31th of August. Minor changes were made. After repeating the same procedure with same buffer, the experiment was repeated by using water solution for the buffer.1 mL of 25 mM choloroauric acid and 1 ml of 15uM BSA and 8 ml of water was added together. 0.25 mM of HAuCl4 and 1.5 uM of BSA in 8 mL of water or buffer was the final concentration of the solution. Data At the beginning of the reaction, the solution was colorless. At the end of the 30 minutes, the test tube with the buffer was cloudy and had particles floating in it.However the solution with water was clear. At the end of the 60 minute, the test tube with the water had golden particles with clear ball shape floating in the solution. At the end of the 90 minutes the golden particles turned into purple. Notes This area is for any observations or conclusions that you would like to note. Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.