23 / 03 Thursday Kaupapa: Test for the presence of starch by using iodine solution Test for the presence of glucose by using Benedict’s solution.

Slides:

Advertisements

Similar presentations

Biochemical Tests Reducing sugars Non-Reducing sugars Starch Lipid

Advertisements

IDENTIFYING MACROMOLECULES IN FOOD LAB

B4: NUTRITION Nutrients. Carbohydrates Contain the elements carbon (C), hydrogen (H) and oxygen (O) Simple sugars (glucose) consist of 6 C atoms in a.

Chemical Tests for Glucose, Starch, Proteins and Fats.

Testing for Macromolecules

Chemical Tests for Nutrients

1. What does the tubing represent?

Unknown Foods: Macromolecule Lab Chapter 2: Carbohydrates, Lipids, and Proteins.

Biochemistry Indicators. What is an indicator? Indicator- chemical that produces a characteristics color when a particular substance is present Standards-

Nutrient Testing Year 10 Biology.

Lab – Identifying food nutrients WRITE THIS DOWN- MEMORIZE IT.

© OUP: To be used solely in purchaser’s school or college 8A Food and digestion Food Balancing your diet Digestion 8A Food and digestion.

Food Tests Grade8.

A balanced diet and the 7 food groups Aims: –To know why food is important –To know that a healthy diet consists of a balance of 6 groups of chemicals.

Organic Compounds Lab Procedure.

IDENTIFYING MACROMOLECULES IN FOOD LAB

OOLONG TEA BY LEO MATSUMURA. RESEARCH Oolong tea is made out of: Energy (per 350ml)0kcal Protein (per 350ml)0g Lipid (per 350ml)0g Carbohydrate (per 350ml)

Movement Through a Membrane

IDENTIFYING MACROMOLECULES IN FOOD LAB. Introduction Carbohydrates, proteins, and fats are all essential nutrients. We cannot manufacture these nutrients.

 Test for simple (reducing) sugars  Benedict’s is blue  Put test substance in a test tube with distilled water and a few drops of Benedict’s  Heat.

© OUP: To be used solely in purchaser’s school or college Food Tests Food Tests Review.

Food groups and Food tests LO: to sort food into food groups and carry out food tests TASK: 1.Why do we need to eat food and plants don’t? 2.Which food.

IDENTIFYING MACROMOLECULES IN FOOD LAB

IDENTIFYING MACROMOLECULES IN FOOD LAB Eva Becker, Hamilton High School Biology Adapted from Madison Southern High School.

In this lab, you will 1. Learn the names of specific indicators 2. Learn the what a specific indicator test for 3. Be introduced to three organic compounds,

Testing for Organic Macromolecules. What are Macromolecules? Large molecules made of smaller molecules Or Small molecules Or Macromolecule.

Starter Look at food labels Why is it useful to put the ingredients and nutritional value of food on labels? What is a food scientist? What is the Foods.

Food Tests. Carbohydrate - Starch Test Put a sample of food in the dropping tile Add a drop of iodine solution. Iodine solution will turn from brown to.

Food Tests Learning Objectives: To understand the main components of the human diet. To test for the presence of starch, glucose protein and fat in a food.

Te Kura Māori O Porirua Food Testing.

IDENTIFYING MACROMOLECULES IN FOOD LAB

17/04/2018 Food and Digestion.

How to detect macromolecules in food

Test for Glucose All the monosaccharides (e.g. glucose) and many of the disaccharides are classed as reducing sugars. Benedict’s test is used to determine.

Identifying Macromolecules

8A What’s in food? What does this food contain? – use your team stickers to predict. Use team counters to record actual result. Test Result Present? Starch.

LAB: Macromolecule Virtual Lab

IDENTIFYING MACROMOLECULES IN FOOD LAB

Classify each as a carbohydrate, protein or lipid.

1. What does the tubing represent?

Starter What is the function of the digestive system?

DO NOW Take out the Macromolecules & Diet Worksheet.

What do we need to digest our food?

Nutrition and Digestion

IDENTIFYING MACROMOLECULES IN FOOD LAB

Food Groups Tests.

IDENTIFYING MACROMOLECULES IN FOOD LAB

Macromolecules Lab Results

Macromolecule Tests Will a potato turn dark purple with an iodine starch test? Starch Test -Iodine is used to test for starch -Dark purple/blue or black.

IDENTIFYING MACROMOLECULES IN FOOD LAB

Identifying Macromolecules in Food

Testing for Organic Compounds

Diffusion Through the Membrane

Food tests: Required Practical 4

Macromolecules Analysis Lab

Tests for Organic Compounds

Classify each as a carbohydrate, protein or lipid.

Macromolecules Analysis Lab

IDENTIFYING MACROMOLECULES IN FOOD LAB

What Color is it?.

Classify each as a carbohydrate, protein or lipid.

Lipid Test - Brown Paper

09/04/2019 Food and Digestion W Richards Worthing High School.

22/04/2019 Food and Digestion W Richards The Weald School.

IDENTIFYING MACROMOLECULES IN FOOD LAB

Practical Biochemistry - Food Tests

26/05/2019 Food and Digestion.

27/05/2019 Food and Digestion W Richards Worthing High School.

22 / 03 Wednesday Kaupapa: Test for the presence of proteins by using Biuret’s solution Test for the presence of lipids by using ethanol.

Presentation transcript:

23 / 03 Thursday Kaupapa: Test for the presence of starch by using iodine solution Test for the presence of glucose by using Benedict’s solution

HOMEWORK (due Monday) Worksheet Food Investigation

Do you remember? Carbohydrates can be in three different forms – what are they? What’s the difference between starch and sugar? What was the name of the solution used for testing proteins? What happens when proteins are present in the food?

Practical – Food Tests Protein Lipids Starch (carbohydrate) Glucose (carbohydrate)

Food Test: Proteins Add three drops of Biuret solution (blue) to the food. In the presence of proteins, it turns purple. It stays blue otherwise.

Food Test: Lipids Add a few drops of ethanol and shake the mixture thoroughly. Then add a few drops of distilled water. The food turns cloudy if it contains lipids.

Food Test: Carbohydrates (Starch) Add a few drops of brown iodine solution. The food turns black or dark blue if it contains starch.

Food Test: Starch Food Result Presence of Starch Bread Infant formula Potato Weet-bix Egg white Lemonade

Food Test: Carbohydrates (Glucose) Add a few drops of blue Benedict’s solution, then heat it over a Bunsen. The food first turns green, then yellow, then orange/red if glucose is present.

Food Test: Glucose Food Result Presence of Glucose Bread Infant formula Lemonade Sugar-water

What have we learnt today? What is the name of the chemical used for testing starch? What happens when starch is present? What is the name of the chemical used for testing glucose? What happens when glucose is present?