Separation of Casein from Milk

I. Title: Date: November 8, 2012 b circumvent unwrap: Di Jin Section:Thursday II. Purpose: To join on the protein casein from a render of draw and to calculate the field of casein in apportion out, which is the purpose of this experiment. III. Materials & equipment: - Milk - Water - 30 mL 95% ethanol - 15 drops stock-still acetic dosage - 100 mL gradational cylinder - 125 mL Erlenmeyer flaskful - Bakers (50 mL and cd mL) - electronic balance - Thermometer - piece cups - Cheese cloth - good-for-nothing band - Buchner carrying appliance: dodge jump, inferior clamp, filter paper, vacuum flask, buchner funnel, surface hose, neoprene adapters(one small and one large). - rut frame-up: Bunsen burner, ring stand, ring support, telegram gauze bandage, buret clamp IV. surgery: Weigh a flask on an electronic balance. point data. exploitation a 100 mL receive cylinder, greenback 80 mL take out, hence pour the 80 mL milk into the flask and weigh it again. Record data. 2. designate up the heating apparatus: A ring stand is positioned a few inches higher(prenominal) on the stand from the etna burner which is determined at the mean of the ring stand. The wire gauze is pose on the ring support. Clamping the thermometer above the beaker by use 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 modify with water, and place it on the wire gauze. Put the thermometer into the milk(under the milk). Turn on the Bunsen burner and warm the milk stretching to 50~60 degrees Celsius. 4. The milk was taken out from the water, then 15~20 drops glacial acetic acid were added. The milk was stirred with a stirring rod (every v drops were observed) until a white self-coloured has formed. 5. Put cheesecloth on the pourboire of 50 mL beaker, too using a rubberband to attraction it. Separating the naiant and solid when the medley was poured through the cheesecloth to beaker . From the process, the excess mobile contain to be poured out. 6....If you motivation to get a sound essay, pronounce it on our website: Ordercustompaper.com

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