Presence and action of salivary amylase and the effect of pH

7,386 views

Published on

Lab amylase

Presence and action
of salivary amylase
and the effect of pH


Main previous concepts: Starch / Amylase / Iodine test
Starch (or amylum) is a carbohydrate consisting of a large number of glucose units joined together.
Amylase is an enzyme that breaks starch down into sugar. Amylase is present in human saliva, where it begins the chemical process of digestion.

Amylase splits starch to glucose.

The Iodine test (or lugol) is used to test for the presence of starch.
Iodine solution reacts with starch producing a blue black color.

Published in: Education, Business, Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
7,386
On SlideShare
0
From Embeds
0
Number of Embeds
1,903
Actions
Shares
0
Downloads
37
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Presence and action of salivary amylase and the effect of pH

  1. 1. Presence and action of salivary amylaseamylaseamylaseamylase and the effect of pHpHpHpH Main previous concepts: Starch / Amylase / Iodine test Starch (or amylum) is a carbohydrate consisting of a large number of glucose units joined together. Amylase is an enzyme that breaks starch down into sugar. Amylase is present in human saliva, where it begins the chemical process of digestion. Amylase splits starch to glucose. The Iodine test (or lugol) is used to test for the presence of starch. Iodine solution reacts with starch producing a blue black color. MATERIALSMATERIALSMATERIALSMATERIALS. (Drawing and name of materials)
  2. 2. 1 2 3 4 Water Bread water Bread water saliva Bread water saliva acid Iodine test (adding Lugol) Colour Test result + or - ? Presence of starch? RESULTSRESULTSRESULTSRESULTS Explain the results for each tube. http://www.biotopics.co.uk/nutrition/amylex.html http://www.biologyjunction.com/amylase_on_starch_lab.htm http://www.medbio.info/Horn/Sugars4Kids/flour_and_wood.htm

×