Starch digestion experiment

Besides making out food easy to swallow, it contains amylase, an enzyme that catalyses the breakdown of starch into sugars. By doing this in an early stage of the digestive process, it eases the work of the pancreas, which as well produces amylase. Aim The aim of this experiment is to find out what effects does amylase have in the reaction of starch with iodine.

Starch digestion experiment

Digestion and Absorption scroll down to see diagrams An Analogy Suppose you are interested in purchasing a Pizza store and wish to investigate how productive the store is without the present owner knowing because, you fear the owner will raise the price.

So, instead of going into the store and watching what happens and asking to examine the books that record expenses and profits, you decide to watch the store from outside.

You observe how often trucks arrive with pizza dough, pizza toppings cheese, pepporoni, etc. You also observe how often workers leave the store to deliver pizzas to customers. In this analogy, the pizza supplies are the reactants and the boxed pizzas that are delivered to customers are the end products.

The workers within the store that shape the dough, add the toppings and place the pizzas in ovens and finally in boxes are the equivalent of the enzymes. The Assignment Although you will perform the laboratory exercise working as groups of two or three students, make your report an individual effort.

For each table, record your observations at the time that you conduct the experiment. However, leave the explanations of the results until the end.

Your explanations should tell why what happened did happen, or tell the value of the information observed. If, for example, there was more enzymatic activity in one tube than in another, what was responsible for the difference?

What does that observation allow us to learn about enzymes? Some of the observations that you make are of controls. For these, your explanation might tell what you would not know if the control had not been included.

You are testing sugar and starch to learn if sugar is present. We expect to find a positive reaction with maltose, indicating that sugar is present. Similarly, we expect to find a negative reaction with starch, indicating that sugar is absent. But consider the possibilities. As indicated in Table 4, be sure to consider as part of your explanation the pH of the environment in which pepsin and trypsin normally work within the human digestive tract.

Although this definition is intended to assist the scientist by allowing one to express very small quantities without the use of cumbersome fractions e. The more hydrogen ions there are, the smaller the pH number.

A change of each whole number represents a tenfold increase or decrease.Amylase starch Amylase Amylase Amylase. Amylase - 2 specific pH and a change in this value can also cause the enzyme to denature (change its shape) and become inactive.


In this lab we will demonstrate the claiming to be “starch blockers” will necessarily contain amylase inhibitors. In this lab, we will. Amylase from our salivary glands and pancreas digests starch to maltose in our mouth and small intestine.

Lipase from the pancreas digests lipids to fatty acids and glycerol in our small intestine.

Starch digestion experiment

Pepsin is a protease that begins digestion of proteins, breaking them into peptides and amino acids. Starch Experiment State the Problem: What foods or vegetables contain starch? Research the Problem: Before we start, we need to know more about starch.

Studies show that starch is white, odorless, tasteless carbohydrate powder soluble in cold water. Lab Report The Effects of Amylase on Starch Andrei Badea Mark Twain 10th Grade Sciences International School Introduction Our saliva has a very important role in our digestion.

Besides making out food easy to swallow, it contains amylase, an enzyme that catalyses the breakdown of starch into sugars. Digestion starts in your mouth where special digestive juices change starch into sugar. Starch is a large chemical generally stored in plants and sugar is a type of chemical that your body used to produce energy for everything your body does, from movement to all the chemical reactions that occur.

The digestive system is the organ system that breaks food down into small molecules that are absorbed into the bloodstream. Digestion is helped by enzymes, which are biological catalysts.

Amylase - Exploring digestion and evolution through a molecular machine | SEP LESSONS