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5 Cards in this Set
- Front
- Back
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Test for starch |
Add iodine drops to the sample Yellow if starch not present Blue/black if present |
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Test for peptide bonds in proteins |
Add drops of sodium hydroxide to the sample Then add drops of copper sulfate Turns a mauve / lilac colour if starch is present |
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Test for reducing sugar (also glucose) |
Add benidicts solution to the food sample in a testube, then place this in a water bath Stays blue if no sugar present Brick red colour if sugar is present |
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Test for lipids (liquid sample) |
Add ethanol to the liquid sample Shake +mix Cloudy emulsion means lipid is present |
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Test for lipids (solid sample) |
Rub sample on paper If leaves a greasy mark lipids are present |
