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What carbs produce red orange solid w Benedict's and red with seliwanoffs reagent
Ketose
What carb gives color change w Benedict's , light orange w seliwanoffs and no bubbles during fermentation
Aldose
What carb gives no color change with Benedict's or seliwanoffs but turns blue blacks with iodine reagent
Starch
What sugars give positive fermentation test
Sucrose and starch
Which carb gives a blue black color in iodine tests
Starch
Which sugars are reducing
Glucose lactose and fructose
Which sugars are non reducing
Sucrose and starch
What sugars are ketoses
Frutcose
What happens to glucose or galactose when the cu2+ in Benedict's reagent is reduced
They are oxidized to carboxylic acids
WouldWould you expect fructose or galactose tfrom a red color rapidly with seliwanoffs reagent
Fructose because. It's a ketose
Wy don't all disaccharides undergo fermentation with yeast
The right enzyme is not present in yeast for some disaccharides such as galactose and lactose
How can iodine test be used to distinguish between amylose and glycogen
Amylose is a form of starch therefore it will turn blue black color. Glycogen will turn reddish purple
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Author
hmgarcia
ID
217180
Card Set
Chemlab
Description
Lab
Updated
2013-05-02T04:03:37Z
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