Biochemistry
Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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2nd column: added reagent/s 

4th column: observation and interpretation

Qualitative Analysis of Carbohydrates
Carbohydrates undergo dehydration by Conc. H2SO4 to form furfural
(furfuraldehyde) or its derivative. The furfurals further react with a-naphthol
present in the Molisch's reagent to form a red-violet (purple) coloured
product that appears as a purple ring at the interface between
the acid and the test layers.
Select the test:
Molisch's test
Molisch'
Reagent
Conc.
H2SO4
Reset
Glucose
Lactose
Sucrose
Starch
expand button
Transcribed Image Text:Qualitative Analysis of Carbohydrates Carbohydrates undergo dehydration by Conc. H2SO4 to form furfural (furfuraldehyde) or its derivative. The furfurals further react with a-naphthol present in the Molisch's reagent to form a red-violet (purple) coloured product that appears as a purple ring at the interface between the acid and the test layers. Select the test: Molisch's test Molisch' Reagent Conc. H2SO4 Reset Glucose Lactose Sucrose Starch
Glucose
Molisch test
Lactose
Sucrose
Starch
expand button
Transcribed Image Text:Glucose Molisch test Lactose Sucrose Starch
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