8453575
Description
Flashcards by mate spark, updated more than 1 year ago
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Created by mate spark
about 7 years ago
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| Question | Answer |
| How do you test for proteins? | Using biuret solution |
| What is the positive reaction for a protein? | A pink-purple colour |
| How do you test for reducing sugars? | Using Benedict's solution and heating it |
| What is the positive reaction for reducing sugars? | A brick red colour |
| How do you test for starch? | Applying drops of iodine |
| What is the positive reaction for starch? | A blue-black colour |
| How do you test for lipids (fats and oils)? | Dissolve the substance in ethanol, or rub the substance on filter paper. |
| What are the positive results for lipids? | A white emulsion (for ethanol test), or the filter paper becomes translucent. |
| How do you test for Vitamin C? | Using DCPIP |
| What is the positive result for Vitamin C? | A peachy colour. |
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