bio - food test

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5 Terms

1
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starch

add iodine solution

turns blue/black if present

2
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lipids

add ethanol and water then shake

white emulsion (cloudy liquid) if present

3
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protein

add Biuret solution

turns purple if present

4
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sugars

add benedict reagent and heat for about two minutes

turns green, yellow or red if present (depends on concentration)

5
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vitamin C

add DCPIP drop-by-drop

turns from blue to clear