2. Draw a diagram and/or write a chemical equation to demonstrate how the test for starch will produce a positive test result. Do the same for a positive test for glucose.

Question

2.	Draw a diagram and/or write a chemical equation to demonstrate how the test for starch will produce a positive test result. Do the same for a positive test for glucose.

anonymous · Answer

Chemical Test for Starch or Iodine: Amylose in starch is responsible for the formation of a deep blue color in the presence of iodine. The iodine molecule slips inside of the amylose coil. Iodine - KI Reagent: Iodine is not very soluble in water, therefore the iodine reagent is made by dissolving iodine in water in the presence of potassium iodide. This makes a linear triiodide ion complex with is soluble. The triiodide ion ion slips into the coil of the starch causing an intense blue-black color. http://www.elmhurst.edu/~chm/vchembook/548starchiodine.html

anonymous · Answer

Benedict's Test for Glucose

Glucose is heated with Benedict's reagent to form a brick red precipitate.

anonymous · Answer

http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG18/TRAM18/B/0591308/MOVIE.HTM

anonymous · Answer

ALSO CAN I TEST SOLID FOODs for lipids using sudan red? like if i take a cracker and crush it and put a lil bit of water in it and then put a few drops of sudan red will it turn red indicating the prescence of lipids?