User:Nader A. Khamis/Notebook/Experimental Biological Chemistry AU Fall 2011/2011/09/06
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1.Approximately 9 mL of ethanol and 1 mL of distilled H2O were placed in a 10 mL graduated cylinder to prepare a 90% ethanol solution.
2.Approximately 1g of Zein was placed into an erlenmeyer flask.
3.Approximately 240μl of glycerol was carefully inserted into the erlenmeyer flask.
4.Approximately 8.7 mL of ethanol was pipetted into the erlenmayer flask and the mixture was mixed using a stir bar.
5.Approximately 5g of the mixture was transfered to a 9cm diameter Petri dish.
6.The cover of the petri dish was removed and the petri dish was placed into the oven for 24hours. The oven temperature was 40°C
Calculation: (9ml/10ml)*100%= 90% v/v Ethanol
x= 1g of Zein.
x = 0.24ml of Glycerol
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