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Antioxidants Flavourings and preservatives
Emulsifiers and thickeners Acidity regulators
Food must be safe Scientists have many chemical instruments to identify unknown chemicals. Chromatography is one technique
Set up a chromatogram. Which inks contain more than one dye
Why are substances added to food? What is an E number? Name and describe a technique used to detect food additives
What happens when you make a paper chromatogram of coloured inks
Plant oils What is added to food?. Preservation Need to make food last longer – preserve it –Salt (remove water) –Vinegar (pickling) –Alcohol (kill microbes)
Analysing Substances LO: Describe how you would detect artificial food colourings (D) Explain how colourings can be identified using chromatography. (C)
Chromatography L/O :- To understand chromatography, and how it works.
C1b 5.4 What is added to our food? Food additive: a substance added to food to -keep it longer -improve taste or appearance.
© Boardworks Ltd of 7. 2 of 7© Boardworks Ltd 2015 Chromatography Chromatography means colour-writing. Chromatography is used to separate mixtures.
Chromatography & Rf Values Noadswood Science, 2012.
Criteria of Purity a) Describe paper chromatography and interpret chromatograms b) Describe how chromatography techniques can be applied to colourless.
Today’s aims Understand what chromatography is. Understand how chromatography used in everyday life 10 December 2013 Today’s Title: Chromatography.
Performance Enhancing Drugs and Chemical Analysis Can you name the sporting persons? What do these sportsman have in common? How did the world know? The.
Chromatography. Match these key words with the correct definitions: Starter SOLVENT SOLUTE AQUEOUS SOLUTION SOLUTION NON-AQUEOUS SOLUTION.
A separating funnel is a container which has a tap at the bottom, allowing you to drain off one liquid before the other.
SIMPLE CHROMATOGRAPHY 1 Separating a liquid mixture.
# 4 Acids and Bases. Number your paper Answer the questions. 1. What does “pH” stand for ? 2. Who invented the pH scale? 3. Describe 2 things that.
FOOD ADDITIVES AND INGREDIENTS ASSOCIATION Why Food Additives? Helen Conn Tuesday 20 th May 2008 Associate Parliamentary Food and Health Forum: London.
Separating Mixtures Differences in physical properties can be used to separate mixtures What are some physical properties we can use to separate mixtures?
After completing this topic you should be able to : State a chemical test to identify the following gases: oxygen (O 2 ), hydrogen (H 2 ), carbon dioxide.
CASE 3.2 Principles of pH. What is pH? pH is the measure of acidity or alkalinity in a soil. Acid is a term used for a substance with a pH value less.
Intermediate 1 Unit 3c Fats, Proteins, Vitamins
WE ARE WHAT WE EAT Nutrition and chemistry. SHOULD WE BE AFRAID OF FOOD?! As consumers, we think we can choose food we want to eat. This is really misleading.
E- Numbers S3 Chemistry Mini-Assignment. What are E- Numbers E numbers are codes for chemicals which can be used as food additives for use within the.
Chemical Ideas 7.6 Chromatography. The general principle. Use – to separate and identify components of mixtures. Several different types - paper, thin.
ADDITIVES Valentina Pajk & Ksenija Zupanc Slovenia.
T. Trimpe What is chromatography? From Wikipedia... Chromatography (from Greek word for chromos for colour) is the collective.
Heinemann Chemistry 2 (4th edition) ISBN Heinemann Chemistry 2 © Harcourt Education, a division of Pearson Australia Group Pty Ltd 2007.
Additives Used in Large Scale Production. Additives can be; Natural – extractions from plants or animals e.g. beetroot juice or vitamin C synthetic/nature.
May 11, 2009 Warm Up: What are food additives? Today Food Additives Notes Begin Food Additives Assignment.
Using chromatography to identify amino acids Key words: SOLVENT – a liquid in which chemicals dissolve to make a solution (e.g. water, ethanol) SOLUTE.
Novel Foods: Foods which are manufactured from ingredients not normally used for food. Novel Foods Quorn is a novel food made from myco-protein. Quorn.
KEY WORDS: Mass number Isotope Atomic number Mole ASSESSMENT: C2 REVISION – CHAPTER 3 – How much? The Mass of atoms What is the relative mass of protons.
A forged signature might be identified by: 1. The signature looking IDENTICAL (i.e. the original signature was traced) Real signature Forgery.
Miss Fogg Chromatography Chromatography (from Greek word for chromos for color) is a laboratory technique for the physical separation of a mixture.
The Different Separation Techniques are as follows: Magnetic attraction Magnetic attraction Filtration Filtration Evaporation Evaporation Crystallisation.
Chemical Analysis PART 1: QUALITATIVE ANALYSIS. Chemical Analysis One of the most important aspects of forensic science Widely used in forensic analysis.
Yoghurt and Mycoprotein Using microorganisms in food production 21/01/2015 Year 10 Biology.
SEPARATING MIXTURES.. What everyday items can you think of that need to be separated and what are the processes used to complete these separations?
Aseel Samaro Using Indicators. The traffic indicators on a car tell other vehicles when the car is going to turn. Indicators in science can show.
Starter: Unscramble the key word 1.Acids are added to many foods for their tangy and rous taste. 2.Acids can be ocisrrove, this means it wears materials.
Click hexagons once to change to blue Twice to change to white Click a third time to restore.
Desert Island Survival Challenge Describe how you could get drinkable fresh water from salt water.
Arnold’s FOOD CHEMISTRY Lesson 1: What is food chemistry?
1. 2 The Different Separation Techniques are as follows: ~ Magnetic attraction ~ Filtration ~ Evaporation ~ Distillation ~ Chromatography ~ Sublimation.
Separating Mixtures Filtration, Evaporation, Chromatography, Distillation.
© Boardworks Ltd of 46. © Boardworks Ltd of 46.
Introduction to Chromatography. What is Chromatography? Derived from the Greek word Chroma meaning colour, chromatography provides a way.
Elements, Compounds, & Mixtures. Matter is made of atoms and groups of bonded atoms called molecules. Pure substances are made from1 type of atom (element).
Forgery and Counterfeiting Questioned Documents 2.
Applications in Forensic Science T. Trimpe 2006
Methods of Chemical Analysis. Selecting an Analytical Technique Organic vs. Inorganic materials Organic: Inorganic: Quantitative vs. Qualitative.
What is Chromatography? Chromatography is a technique for separating mixtures in order to analyze and identify the components of a mixture. Separate Analyze.
DECEMBER 10 TH, Slides ①What is it? ②Why is it used in foods? ③What are some examples of foods where you might see this additive? ④Photos of foods.
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