Difference between revisions of "Starch"
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| style="height:20px; width:400px; text-align:center;" |[[Iodine Solution]] is an orange [[liquid]]. When the [[Iodine Solution]] is added to '''starch''' the [[Iodine Solution]] turns from orange to blue-black. | | style="height:20px; width:400px; text-align:center;" |[[Iodine Solution]] is an orange [[liquid]]. When the [[Iodine Solution]] is added to '''starch''' the [[Iodine Solution]] turns from orange to blue-black. | ||
|} | |} | ||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/1782946381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946381&linkCode=as2&tag=nrjc-21&linkId=5ec5fc3f6429e30c1d9ab9bca2bccf93 ''Starch, page 147, GCSE Combined Science Trilogy; Biology, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945954/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945954&linkCode=as2&tag=nrjc-21&linkId=100574c08fbbb64318256eb79ed61a76 ''Starch, page 161, GCSE Biology, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1471851346/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851346&linkCode=as2&tag=nrjc-21&linkId=3ac654f4b0da781c49c855a1af4c92ea ''Starch, page 193, GCSE Chemistry, Hodder, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10310 ''Starch, page 26, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Starch, page 29, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Starch, pages 172-173, GCSE Chemistry; Third Edition, Oxford University Press, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0008158762/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158762&linkCode=as2&tag=nrjc-21&linkId=a0fffa35b3ea49a63404f6704e0df7cc ''Starch, pages 226-7, 252, GCSE Chemistry; Student Book, Collins, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359373/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359373&linkCode=as2&tag=nrjc-21&linkId=952a73bbb09d222ecc4b50d200679849 ''Starch, pages 46, 128-129, GCSE Biology; Third Edition, Oxford University Press, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0008158754/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158754&linkCode=as2&tag=nrjc-21&linkId=27ad53b0283feeff7fc5ae04a9e205f524 ''Starch, pages 56, 58,69,98-99, 103, GCSE Biology; Student Book, Collins, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Starch, test for, page 48, GCSE Combined Science Trilogy 1, Hodder, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10311 ''Starch; test for, page 28, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Starch; test for, page 32, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
Revision as of 15:02, 13 November 2019
Contents
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
 |
| A starch molecule made of many smaller glucose molecules. |
Starch in Foods
 |
 |
 |
 |
| 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.
 |
| Iodine Solution is an orange liquid. When the Iodine Solution is added to starch the Iodine Solution turns from orange to blue-black. |
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
|
| A starch molecule made of many smaller glucose molecules. |
Starch in Foods
|
|
|
|
| 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.
|
| Iodine Solution is an orange liquid. When the Iodine Solution is added to starch the Iodine Solution turns from orange to blue-black. |
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