Separation of Casein from Milk

I. Title: Date: November 8, 2012 Name: Di Jin Section:Thursday II. conclude: To attach the protein casein from a sample of draw and to take care the region of casein in take out, which is the pur come of this experiment. III. Materials & equipment: - draw - Water - 30 mL 95% ethanol - 15 drops Glacial acetic acid - 100 mL calibrated cylinder - 125 mL Erlenmeyer flask - Bakers (50 mL and cd mL) - Electronic balance - Thermometer - piece cups - Cheese cloth - prophylactic band - Buchner carrying appliance: ring stand, utility clamp, filter paper, nullity flask, buchner funnel, rubber hose, neoprene adapters(one small and one large). - Heating apparatus: bunsen burner burner, ring stand, ring support, wire gauze, burette clamp IV. military operation: Weigh a flask on an electronic balance. point data. Using a 100 mL graduated cylinder, preeminence 80 mL take out, hence pour the 80 mL milk int o the flask and weigh it again. Record data. 2. Set up the heating apparatus: A ring stand is positioned a few inches higher on the stand from the bunsen burner which is fit(p) at the base of the ring stand. The wire gauze is pose on the ring support. Clamping the thermometer above the beaker by using a burette clamp. 3.

Using the distilled water to fill 1/3 of a 400 mL beaker. arrogate the flask with milk in the beaker which is filled with water, and place it on the wire gauze. congeal the thermometer into the milk(under the milk). Turn on the Bunsen burner and warm the milk reach to 50~60 degrees Cels ius. 4. The milk was taken out from the w! ater, so 15~20 drops glacial acetic acid were added. The milk was stirred with a stirring rod (every five drops were observed) until a white solid has formed. 5. Put cheesecloth on the top of 50 mL beaker, also using a rubberband to tie it. Separating the swimming and solid when the mixture was poured through the cheesecloth to beaker . From the process, the excess liquid prevail to be poured out. 6....If you want to get a full essay, suppose it on our website: BestEssayCheap.com

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