Monosaccharides
- Created by: Jessica
- Created on: 13-12-12 23:51
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- Monosaccharides
- Monomer
- Each individual molecule that make up a monosaccharide chain is a monomer
- In carbohydrates the basic monomer unit is sugar (saccharide)
- A single monomer is therefore a monosaccharide
- Polymer
- Long chains of monomers
- sweet tasting, soluble substances
- General formula = (CH2O)n
- n can be any number from 3 to 7
- Tests (2 tests for monosaccharides)
- Reducing sugars
- 1) Add food sample in a liquid form
- 2) Add benedicts reagent
- 3)Heat in a water bath for 5 minutes
- Results in a colour change
- Medium
- Results in a colour change
- 3)Heat in a water bath for 5 minutes
- 2) Add benedicts reagent
- Benedicts test
- 1) Add food sample in a liquid form
- Non-reducing sugars
- first you have to break a disaccharide down to a monosaccharide
- 1) Add food sample (In liquid form)
- 2) add acid (hydrochloric acid)
- 3) heat for 5 minutes
- 4) Add an alkaline to neutralise
- 5) retest with benedicts test
- 4) Add an alkaline to neutralise
- 3) heat for 5 minutes
- 2) add acid (hydrochloric acid)
- Reducing sugars
- Monomer
- Medium
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