Key Stage 3
Meaning
Starch is a complex carbohydrate found in food.
About Starch
- Starch is made of many glucose molecules bonded together.
- Starch is an important part of a balanced diet.
Starch Molecule
Starch in Foods
Foods with lots of starch:
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| Bread makes part of a balanced diet because it has a lot of starch used for energy.
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A balanced diet might contain pasta as it is mostly starch.
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Potatoes are full of starch.
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Rice is mostly starch with very few other nutrients.
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Testing for Starch
- Starch can be detected using Iodine Solution.
Method
- 1. A small sample of food is placed on a spotting tile.
- 2. A drop of Iodine Solution is added to the food sample.
- 3. If the Iodine Solution turns from orange to blue-black then the food contains starch.
Key Stage 4
Meaning
Starch is a polysaccharide found in food.
About Starch
- Starch is a polymer made of many glucose monomers which join together in a polymerisation reaction.
- Starch is an important part of a balanced diet.
- Starch can be broken down into shorter chains by amylase.
Starch Molecule
Starch in Foods
Foods with lots of starch:
|
|
|
|
|
| Bread makes part of a balanced diet because it has a lot of starch used for energy.
|
A balanced diet might contain pasta as it is mostly starch.
|
Potatoes are full of starch.
|
Rice is mostly starch with very few other nutrients.
|
Testing for Starch
- Starch can be detected using Iodine Solution.
Method
- 1. A small sample of food is placed on a spotting tile.
- 2. A drop of Iodine Solution is added to the food sample.
- 3. If the Iodine Solution turns from orange to blue-black then the food contains starch.
References
AQA
- Starch, page 147, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Starch, page 161, GCSE Biology, CGP, AQA
- Starch, page 193, GCSE Chemistry, Hodder, AQA
- Starch, page 26, GCSE Combined Science; The Revision Guide, CGP, AQA
- Starch, page 29, GCSE Biology; The Revision Guide, CGP, AQA
- Starch, pages 172-173, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Starch, pages 226-7, 252, GCSE Chemistry; Student Book, Collins, AQA
- Starch, pages 46, 128-129, GCSE Biology; Third Edition, Oxford University Press, AQA
- Starch, pages 56, 58,69,98-99, 103, GCSE Biology; Student Book, Collins, AQA
- Starch, test for, page 48, GCSE Combined Science Trilogy 1, Hodder, AQA
- Starch; test for, page 28, GCSE Combined Science; The Revision Guide, CGP, AQA
- Starch; test for, page 32, GCSE Biology; The Revision Guide, CGP, AQA
Edexcel
- Starch, page 100, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Starch, page 124, GCSE Biology, Pearson, Edexcel
- Starch, pages 16, 17, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Starch, pages 17-19, GCSE Biology; The Revision Guide, CGP, Edexcel
- Starch, pages 176, 185, GCSE Chemistry, Pearson, Edexcel
- Starch, pages 39, 41, 44, GCSE Biology, CGP, Edexcel
OCR
- Starch (testing for), page 24, Gateway GCSE Biology; The Revision Guide, CGP, OCR
- Starch, pages 38, 48-49, 252, 256, Gateway GCSE Biology, Oxford, OCR
- Starch, pages 65, 245, Gateway GCSE Chemistry, Oxford, OCR
