Activity No. 3

  1. Reducing sugars may be differentiated from each other by the osazones they form with __________
    Phenylhydrazine
  2. Osazones are ______ compounds which have characteristics forms, definite time of formation, and different relative solubilities in hot water.
    yellow crystaline
  3. Some of the monosaccharides give _______ which differ in their rates of formation.
    identical osazones
  4. Fructose froms an osazone faster than _________ even though the osazones formed are the same.
    Glucose
  5. ______ is used to differentiate helical from non-helical or linear polysaccharides.
    Iodine Solution
  6. __________ like amylose trap iodine molecules, producing the characteristic ____________ complex.
    Unbranched helical polysaccharides, deep blue-black
  7. Amylopectin which is branched and helical, gives a ______ or ________ with iodine.
    purple or red-violet color
  8. Glycogen gives colors varying from _________ to ______.
    Wine red to brown
  9. The color differences are apparently related to the extent of _____________.
    coiling in the glycogen
  10. ________,_______, and ________ have linear structures and thus, give no color with iodine or the color of iodine solution is retained.
    Cellulose, Inulin, Gum-arabic, and Agar-agar
  11. _______ and _______ do not form dark colors with iodine because they are too small to trap iodine molecules.
    monosaccharides and disaccharides
  12. LAB ACTIVITY:
    MATERIALS-
    CHEMICALS-
    (Study procedures in the book)
    Image Upload 2
  13. What is the title of Activity No. 3?
    QUALITATIVE ANALYSIS CARBOHYDRATES (II)
  14. What are the 2 test in this activity?
    • A. Osazone Formation
    • B. Iodine Test for Polysaccharides
Author
JhanAxis
ID
359896
Card Set
Activity No. 3
Description
Updated