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【化学搬运/That Chemist】10种糖的滋味排序(feat. Mrs. Chemist)
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https://www.youtube.com/watch?v=zcw7I5bT4Gk In this video, we explore the taste of ten different sugars, and decide which sugars are sweet, and which ones taste worse than Grimace’s feet after a long day at McDonalds. If you would like to order the same scale that I have, the HRB303 (with Glass Draft Shield), you can visit www.lwmeasurements.com to see all of the great scales that they have to offer! - - General Procedures General Procedure 1. Preparation of Standard Citric Acid Solution Citric acid (2.007 g, 10.4 mmol) was placed in a large beaker (500 mL) and pre-boiled, room-temperature tap water (~500 mL) was added. The solution was mechanically stirred (using a polystyrene spoon) until homogeneous. The resulting citric acid solution was covered and stored at room temperature prior to its use. General Procedure 2. Preparation of Aqueous ‘Citric Acid-ade’ The sugar (e.g. lactose) was added in one portion to a small polystyrene vessel (60 mL). This was then suspended in the standard citric acid solution (~25 mL) with the aid of mechanical stirring from a translucent mouth-pipette (straw; material not determined). The resulting suspension or solution was mouth-pipetted in several small portions for the large mammal assay. Methods and Materials All chemicals used in this video were food grade. The chemicals were obtained from Amazon Canada (in the cases of lactose, glucose, psicose/allulose, and ribose), Ebay (in the case of maltose and xylose), Bulk Barn (citric acid), Bulk Supplements (in the case of trehalose, mannose, and fructose) and Save On Foods (sucrose). The itemized prices that I paid do not include the cost of shipping or taxes. The combined cost of shipping was $56.00 CDN + $48.01 USD.
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