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Biochem Lab Activity 2: Qualitative Analysis for Carbohydrates
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are also known as saccharides
carbohydrates
carbohydrates include a large group of __________ or ____________ and their derivative
polyhydroxyaldehydes, polyhydroxyketones
when a monosaccharide is treated with strong mineral acid, what occurs
dehydration
the dehydrated product is _________ if it is a pentose
furfural
the dehydrated product is _________ if it is a hexose
hydroxymethylfurfural
uses a-naphtol is the most general test for Carbohydrates
Molisch Test
color of furfural and hydroxymethylfurfural derivatives if carbohydrates are present
purple
test that is useful in differentiating hexose and ketose
Orcinol / Bial's Test
Orcinol condenses with furfural from pentoses to form
blue-green compound
Orcinol react with hydroxymethylfurfural from hexose to form
yellow-brown product
uses resorcinol to distinguish aldohexoses and ketohexoses
Seliwanoff's Test
Ketoses dehydrate more rapidly and form _________ complex
cherry red
Aldohexoses give what color as they take longer time to develop
light pink
is one which has a free hydroxyl group at the anomeric C
reducing sugar
test that distinguishes between reducing monosaccharide and reducing disaccharide by a difference in rate of reaction
Barfoed's Test
Author
kylle
ID
359990
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Biochem Lab Activity 2: Qualitative Analysis for Carbohydrates
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Updated
2022-11-23T03:52:35Z
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